C Primer Plus第6版中文版勘误表

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Cprimerplus第6版中文版编程练习答案第17章

1、//count.cpp#include <iostream>using namespace std;int main(){char ch;int count = 0;cout << "Enter a string($ to quit):\n";while (cin.get(ch)){if (ch != '$'){count++;cout << ch;}else{cin.putback(ch);break;}}cout << "Count is " << count << endl;system("pause");return 0;}2、//filein.cpp#include <iostream>#include <fstream>#include <cstdlib>int main(int argc, char *argv[]){using namespace std;if (argc == 1){cerr << "Usage: " << argv[0] << " filename[s]\n";exit(EXIT_FAILURE);}ofstream fout(argv[1], ios::out|ios::app);{cerr << "Can't open " << argv[1] << " file for output.\n";exit(EXIT_FAILURE);}char ch;cout << "Enter a string: \n";while (cin.get(ch)){if (ch != '\n')fout << ch;elsebreak;}fout << endl;fout.close();system("pause");return 0;}3、//copy.cpp#include <iostream>#include <fstream>#include <cstdlib>int main(int argc, char *argv[]){using namespace std;if (argc == 1){cerr << "Usage: " << argv[0] << " filename[s]\n";exit(EXIT_FAILURE);}ifstream fin;char ch;fin.open(argv[1], ios::in);if (!fin.is_open()){cerr << "Could not open " << argv[1] << endl;exit(EXIT_FAILURE);}ofstream fout(argv[2], ios::out | ios::trunc);{cerr << "Could not open " << argv[1] << endl;exit(EXIT_FAILURE);}cout << "Here are the current contents of th "<< argv[1] << " file:\n";while (fin.get(ch)){cout << ch;fout << ch;}fin.close();fout.close();system("pause");return 0;}//a.txtAbcdefghijklmnopqrstuvwxyz4、//copy_cat.cpp#include <iostream>#include <fstream>#include <cstdlib>#include <string>using namespace std;const char *file1 = "a.txt";const char *file2 = "b.txt";const char *file3 = "c.txt";int main(){ifstream fin1, fin2;fin1.open(file1);fin2.open(file2);ofstream fout;fout.open(file3, ios_base::out | ios_base::trunc);string s1, s2;if (!fin1.is_open() || !fin2.is_open()){cerr << "Can't open " << file1 << " or " << file2 << endl;exit(EXIT_FAILURE);}if (!fout.is_open()){cerr << "Can't open " << file3 << endl;exit(EXIT_FAILURE);}while (!fin1.eof() && !fin2.eof()){getline(fin1, s1);cout << "File1 " << s1 << endl;getline(fin2, s2);cout << "File2 " << s2 << endl;fout << s1 << " " << s2 << endl;}while (!fin1.eof()){getline(fin1, s1);cout << "More file1 " << s1 << endl;fout << s1 << endl;}while (!fin2.eof()){getline(fin2, s2);cout << "More file2 " << s2 << endl;fout << s2 << endl;}fin1.close();fin2.close();fout.close();system("pause");return 0;}//a.txteggs kites donutsballoons hammersstones//b.txtzero lassitudefinance drama5、//name.cpp#include <iostream>#include <string>#include <set>#include <algorithm>#include <iterator>#include <fstream>const char *file1 = "mat.dat";const char *file2 = "pat.dat";const char *file3 = "matnpat.dat";int main(){using namespace std;string fname1;set<string> A;ifstream finA, finB;finA.open(file1);finB.open(file2);ofstream fout;ostream_iterator<string, char> out1(cout, " "), out2(fout, "\n");fout.open(file3, ios_base::out | ios_base::trunc);if (!finA.is_open() || !finB.is_open()){cerr << "Can't open " << file1 << " or " << file2 << endl;exit(EXIT_FAILURE);}if (!fout.is_open()){cerr << "Can't open " << file3 << endl;exit(EXIT_FAILURE);}while (!finA.eof()){getline(finA, fname1);A.insert(fname1);}cout << "Mat's friends: \n";copy(A.begin(), A.end(), out1);cout << endl;string fname2;set<string> B;while (!finB.eof()){getline(finB, fname2);B.insert(fname2);}cout << "Pat's friends: \n";copy(B.begin(), B.end(), out1);cout << endl;cout << "Union of Mat and Pat's friends: ";set_union(A.begin(), A.end(), B.begin(), B.end(), out1);set_union(A.begin(), A.end(), B.begin(), B.end(), out2);cout << endl;finA.close();finB.close();fout.close();system("pause");return 0;}6、//emp.h#ifndef EMP_H_#define EMP_H_#include <iostream>#include <string>#include <fstream>using namespace std;enum classtype{ Employee, Manager, Fink, Highfink };class abstr_emp{private:string fname;string lname;string job;public:abstr_emp();abstr_emp(const string &fn, const string &ln,const string &j);virtual void ShowAll()const;virtual void SetAll();friend ostream &operator<<(ostream &os, const abstr_emp &e);virtual ~abstr_emp() = 0;virtual void writeall(ofstream &ofs);virtual void getall(ifstream &ifs);};class employee :public abstr_emp{public:employee();employee(const string &fn, const string &ln, const string &j);virtual void ShowAll()const;virtual void SetAll();virtual void writeall(ofstream &ofs);virtual void getall(ifstream &ifs);};class manager :virtual public abstr_emp{private:int inchargeof;protected:int InChargeOf()const { return inchargeof; }int &InChargeOf(){ return inchargeof; } public:manager();manager(const string &fn, const string &ln, const string &j, int ico = 0);manager(const abstr_emp &e, int ico = 0);manager(const manager &m);virtual void ShowAll()const;virtual void SetAll();virtual void writeall(ofstream &ofs);virtual void getall(ifstream &ifs);void getInCharge(){cout << "Enter inchargeof: ";cin >> inchargeof;}void writeInCharge(ofstream &ofs){ofs << inchargeof << endl;}void readInCharge(ifstream &ifs){ifs >> inchargeof;}};class fink :virtual public abstr_emp{private:string reportsto;protected:const string ReportsTo()const{ return reportsto; }string &ReportsTo(){ return reportsto; }public:fink();fink(const string &fn, const string &ln,const string &j, const string &rpo);fink(const abstr_emp &e, const string &rpo);fink(const fink &e);virtual void ShowAll()const;virtual void SetAll();virtual void writeall(ofstream &ofs);virtual void getall(ifstream &ifs);void getReportsTo(){cout << "Enter reportsto: ";cin >> reportsto;}void writeReportsTo(ofstream &ofs){ofs << reportsto << endl;}void readReportsTo(ifstream &ifs){ifs >> reportsto;}};class highfink :public manager, public fink{public:highfink();highfink(const string &fn, const string &ln,const string &j, const string &rpo, int ico = 0);highfink(const abstr_emp &e, const string &rpo, int ico = 0);highfink(const fink &f, int ico = 0);highfink(const manager &m, const string &rpo);highfink(const highfink &h);virtual void ShowAll()const;virtual void SetAll();virtual void writeall(ofstream &ofs);virtual void getall(ifstream &ifs);};#endif//emp.cpp#include "emp.h"abstr_emp::abstr_emp() :fname("no one"), lname("no one"), job("no job") {}abstr_emp::abstr_emp(const string &fn, const string &ln,const string &j) : fname(fn), lname(ln), job(j){}void abstr_emp::ShowAll()const{cout << "Firstname: " << fname << endl;cout << "Lastname: " << lname << endl;cout << "Job is: " << job << endl;}void abstr_emp::SetAll(){cout << "Enter firstname: ";getline(cin, fname);cout << "Enter lastname: ";getline(cin, lname);cout << "Enter position: ";getline(cin, job);}ostream &operator<<(ostream &os, const abstr_emp &e){os << e.fname << " " << e.lname << ", " << e.job << endl;return os;}abstr_emp::~abstr_emp(){}void abstr_emp::writeall(ofstream &ofs){ofs << fname << "\n" << lname << "\n" << job << "\n"; }void abstr_emp::getall(ifstream &ifs){getline(ifs, fname);getline(ifs, lname);getline(ifs, job);}employee::employee() :abstr_emp(){}employee::employee(const string &fn, const string &ln, const string &j) : abstr_emp(fn, ln, j){}void employee::ShowAll()const{abstr_emp::ShowAll();}void employee::SetAll(){abstr_emp::SetAll();}void employee::writeall(ofstream &ofs){ofs << Employee << endl;abstr_emp::writeall(ofs);}void employee::getall(ifstream &ifs){abstr_emp::getall(ifs);}manager::manager() :abstr_emp(){}manager::manager(const string &fn, const string &ln,const string &j, int ico) : abstr_emp(fn, ln, j), inchargeof(ico){}manager::manager(const abstr_emp &e, int ico) : abstr_emp(e), inchargeof(ico) {}manager::manager(const manager &m) : abstr_emp(m){}void manager::ShowAll()const{abstr_emp::ShowAll();cout << "Inchargeof: " << InChargeOf() << endl;}void manager::SetAll(){abstr_emp::SetAll();cout << "Enter inchargeof: ";(cin >> inchargeof).get();}void manager::writeall(ofstream &ofs){ofs << Manager << endl;abstr_emp::writeall(ofs);ofs << inchargeof << endl;}void manager::getall(ifstream &ifs){abstr_emp::getall(ifs);ifs >> inchargeof;}fink::fink() :abstr_emp(){}fink::fink(const string &fn, const string &ln,const string &j, const string &rpo) : abstr_emp(fn, ln, j), reportsto(rpo){}fink::fink(const abstr_emp &e, const string &rpo) : abstr_emp(e), reportsto(rpo){}fink::fink(const fink &e) : abstr_emp(e){}void fink::ShowAll()const{abstr_emp::ShowAll();cout << "Reportsto: " << ReportsTo() << endl;}void fink::SetAll(){abstr_emp::SetAll();cout << "Enter reportsto: ";cin >> reportsto;}void fink::writeall(ofstream &ofs){ofs << Fink << endl;abstr_emp::writeall(ofs);ofs << reportsto << endl;}void fink::getall(ifstream &ifs){abstr_emp::getall(ifs);ifs >> reportsto;}highfink::highfink() :abstr_emp(), manager(), fink(){}highfink::highfink(const string &fn, const string &ln,const string &j, const string &rpo, int ico) : abstr_emp(fn, ln, j), manager(fn, ln, j, ico), fink(fn, ln, j, rpo){}highfink::highfink(const abstr_emp &e, const string &rpo, int ico) : abstr_emp(e), manager(e, ico), fink(e, rpo){}highfink::highfink(const fink &f, int ico) : abstr_emp(f), manager(f, ico), fink(f){}highfink::highfink(const manager &m, const string &rpo) : abstr_emp(m), manager(m), fink(m, rpo){}highfink::highfink(const highfink &h) : abstr_emp(h), manager(h), fink(h){}void highfink::ShowAll()const{abstr_emp::ShowAll();cout << "InChargeOf: ";cout << manager::InChargeOf() << endl;cout << "ReportsTo: ";cout << fink::ReportsTo() << endl;}void highfink::SetAll(){abstr_emp::SetAll();manager::getInCharge();fink::getReportsTo();}void highfink::writeall(ofstream &ofs){ofs << Highfink << endl;abstr_emp::writeall(ofs);manager::writeInCharge(ofs);fink::writeReportsTo(ofs);}void highfink::getall(ifstream &ifs){abstr_emp::getall(ifs);manager::readInCharge(ifs);fink::readReportsTo(ifs);}//useemp.cpp#include "emp.h"const int MAX = 10;const char *file = "a.txt";int main(void){abstr_emp *pc[MAX];char ch;ifstream fin;fin.open(file);int i = 0;if (fin.is_open()){cout << "Here are the current contents of the "<< file << " file:\n";int classtype;i = 0;while ((fin >> classtype).get(ch)){switch (classtype){case Employee:pc[i] = new employee;break;case Manager:pc[i] = new manager;break;case Fink:pc[i] = new fink;break;case Highfink:pc[i] = new highfink;break;}cout << classtype << endl;pc[i]->getall(fin);pc[i++]->ShowAll();}}fin.close();ofstream fout;fout.open(file, ios_base::out | ios_base::app);if (!fout.is_open()){cerr << "Can't open " << file << " file for output.\n";exit(EXIT_FAILURE);}cout << "e to employee, m to manager\n"<< "f to fink, h to highfink\n"<< "q to quit: ";int index = 0;while (cin.get(ch).get() && ch != 'q'&&index < MAX){switch (ch){case'e':pc[index] = new employee;pc[index]->SetAll();index++;break;case'm':pc[index] = new manager;pc[index]->SetAll();index++;break;case'f':pc[index] = new fink;pc[index]->SetAll();index++;break;case'h':pc[index] = new highfink;pc[index]->SetAll();index++;break;default:cout << "Try again";break;}if (index > MAX)break;cout << "e to employee, m to manager\n"<< "f to fink, h to highfink\n"<< "q to quit: ";}for (i = 0; i < index; i++)pc[i]->writeall(fout);fout.close();fin.clear();fin.open(file);if (fin.is_open()){cout << "Here are the current contents of the "<< file << " file:\n";int classtype;i = 0;while ((fin >> classtype).get(ch)){switch (classtype){case Employee:pc[i] = new employee;break;case Manager:pc[i] = new manager;break;case Fink:pc[i] = new fink;break;case Highfink:pc[i] = new highfink;break;}cout << classtype << endl;pc[i]->getall(fin);pc[i++]->ShowAll();}}cout << "Done.\n";system("pause");return 0;}7、//vcopy.cpp#include <iostream>#include <vector>#include <string>#include <iterator>#include <algorithm>#include <fstream>#include <cstdlib>using namespace std;void ShowStr(const string &);void GetStrs(ifstream &, vector<string> &);class Store{ofstream &fout;public:Store(ofstream &os) :fout(os){}void operator()(const string &str);};void Store::operator()(const string &str){size_t len = str.size();fout.write((char *)&len, sizeof(size_t));fout.write(str.data(), len);}int main(){vector<string> vostr;string temp;cout << "Enter strings (empty line to quit):\n";while (getline(cin, temp) && temp[0] != '\0')vostr.push_back(temp);cout << "Here is your input.\n";for_each(vostr.begin(), vostr.end(), ShowStr);ofstream fout("strings.dat", ios_base::out | ios_base::binary);for_each(vostr.begin(), vostr.end(), Store(fout));fout.close();vector<string> vistr;ifstream fin("strings.dat", ios_base::in | ios_base::binary);if (!fin.is_open()){cerr << "Could not open file for input.\n";exit(EXIT_FAILURE);}GetStrs(fin, vistr);cout << "\nHere are the strings read from the file:\n";for_each(vistr.begin(), vistr.end(), ShowStr);system("pause");return 0;}void ShowStr(const string &str){cout << str << endl;}void GetStrs(ifstream &fin, vector<string> &str){char *s;size_t len;while (fin.read((char *)&len, sizeof(size_t))){s = new char[len];fin.read(s, len);s[len + 1] = '\0';str.push_back(s);}}。

C++Primer Plus(第6版)中文版编程练习答案--第五章

9.
#include<iostream> #include<cstring> #include<string> using namespace std; int main() { string word; int i=0; cout<<"enter words(to stop, type the word done):"<<endl; cin>>word; while(word!="done") { i++; cin>>word; } cout<<"you entered a total of "<<i<<" words."<<endl; return 0; }
8.
#include<iostream> #include<cstring> using namespace std; int main() { char word[20]; int i=0;
5
cout<<"enter words(to stop, type the word done):"<<endl; cin>>word; while(strcmp(word,"done")!=0) { i++; cin>>word; } cout<<"you entered a total of "<<i<<" words."<<endl; return 0; }

C++ primer plus(第6版)中文版编程练习答案第15章

1、//tv.h#ifndef TV_H_#define TV_H_#include <iostream>using namespace std;classTv{friend class Remote;public:enum { Off, On };enum { MinVal, MaxVal = 20 };enum { Antenna, Cable };enum { TV, DVD };enum { USUAL, EXCHANGE };Tv(int s = Off, int mc = 125) :state(s), volume(5),maxchannel(mc), channel(2), mode(Cable), input(TV){} ~Tv(){}voidonoff(){ state = (state == On) ? Off : On; }boolison()const{ return state == On; }boolvolup();boolvoldown();voidchanup();voidchandown();voidset_mode(){ mode = (mode == Antenna) ? Cable : Antenna; } voidset_input(){ input = (input == TV) ? DVD : TV; }void settings()const;voidset_rmode(Remote &r);private:int state;int volume;intmaxchannel;int channel;int mode;int input;};class Remote{private:friend class Tv;enum { USUAL, EXCHANGE };int mode;intfmode;public:Remote(int m = Tv::TV, int f = USUAL) :mode(m), fmode(f){}boolvolup(Tv&t){ return t.volup(); }boolvoldown(Tv&t){ return t.voldown(); }voidonoff(Tv&t){ t.onoff(); }voidchanup(Tv&t){ t.chanup(); }voidchandown(Tv&t){ t.chandown(); }voidset_chan(Tv&t, int c){ t.channel = c; }voidset_mode(Tv&t){ t.set_mode(); }voidset_input(Tv&t){ t.set_input(); }voidmode_show()const{ cout<< "Remote pretent mode is " <<fmode<<endl; } };inline void Tv::set_rmode(Remote &r){if (ison()){r.fmode = Remote::EXCHANGE;r.mode_show();}}#endif//tvfm.h#ifndef TVFM_H_#define TVFM_H_#include <iostream>using namespace std;classTv;class Remote{public:enum State{ Off, On };enum { MinVal, MaxVal = 20 };enum { Antenna, Cable };enum { TV, DVD };private:int mode;public:Remote(int m = TV) :mode(m){}boolvolup(Tv&t);boolvoldown(Tv&t);voidonoff(Tv&t);voidchanup(Tv&t);voidchandown(Tv&t);voidset_chan(Tv&t, int c);voidset_mode(Tv&t);voidset_input(Tv&t);};classTv{public:friend void Remote::set_chan(Tv&t, int c);enum State{ Off, On };enum { MinVal, MaxVal = 20 };enum { Antenna, Cable };enum { TV, DVD };Tv(int s = Off, int mc = 125) :state(s), volume(5),maxchannel(mc), channel(2), mode(Cable), input(TV){} ~Tv(){}voidonoff(){ state = (state == On) ? Off : On; }boolison()const{ return state == On; }boolvolup();boolvoldown();voidchanup();voidchandown();voidset_mode(){ mode = (mode == Antenna) ? Cable : Antenna; } voidset_input(){ input = (input == TV) ? DVD : TV; }void settings()const;private:int state;int volume;intmaxchannel;int channel;int mode;int input;};inlinebool Remote::volup(Tv&t){ return t.volup(); }inlinebool Remote::voldown(Tv&t){ return t.voldown(); } inline void Remote::onoff(Tv&t){ t.onoff(); }inline void Remote::chanup(Tv&t){ t.chanup(); }inline void Remote::chandown(Tv&t){ t.chandown(); } inline void Remote::set_chan(Tv&t, int c){ t.channel = c; } inline void Remote::set_mode(Tv&t){ t.set_mode(); } inline void Remote::set_input(Tv&t){ t.set_input(); }#endif//tv.cpp#include "tv.h"//#include "tvfm.h"boolTv::volup(){if (volume <MaxVal){volume++;return true;}elsereturn false;}boolTv::voldown(){if (volume>MinVal){volume--;return true;}elsereturn false;}voidTv::chanup(){if (channel <maxchannel)channel++;elsechannel = 1;}voidTv::chandown(){if (channel>1)channel--;elsechannel = maxchannel;}voidTv::settings()const{cout<< "TV is " << (state == Off ? "Off" : "On") <<endl;if (state == On){cout<< "Volume setting = " << volume <<endl;cout<< "Channel setting = " << channel <<endl;cout<< "Mode = " << (mode == Antenna ? "antenna" : "cable") <<endl;cout<< "Input = " << (input == TV ? "TV" : "DVD") <<endl;}}//use_tv.cpp#include "tv.h"int main(){Tv s42;Remote grey;grey.mode_show();cout<< "Initial settings for 42\" TV:\n";s42.settings();s42.onoff();s42.chanup();cout<< "\nAdjusted settings for 42\" TV:\n";s42.settings();s42.set_rmode(grey);grey.set_chan(s42, 10);grey.volup(s42);grey.volup(s42);cout<< "\n42\" settings after using remote:\n";s42.settings();Tvs58(Tv::On);s58.set_mode();grey.set_chan(s58, 28);cout<< "\n58\" settings:\n";s58.settings();s58.set_rmode(grey);system("pause");return 0;}2、//exc_mean.h#ifndef EXC_MEAN_H_#define EXC_MEAN_H_#include <iostream>#include <cmath>#include <stdexcept>#include <string>using namespace std;classbad_hmean :public logic_error{private:string name;public:explicitbad_hmean(const string &n = "hmean", const string &s = "Error in hmean()\n");stringmesg();virtual ~bad_hmean()throw(){}};bad_hmean::bad_hmean(const string &n, const string &s) :name(n), logic_error(s){}inline string bad_hmean::mesg(){return "hmean() arguments a=-b should be div a+b=0!\n";}classbad_gmean :public logic_error{private:string name;public:explicitbad_gmean(const string &n = "gmean", const string &s = "Error in gmean()\n");stringmesg();virtual ~bad_gmean()throw(){}};bad_gmean::bad_gmean(const string &n, const string &s) :name(n), logic_error(s){inline string bad_gmean::mesg(){return "gmean() arguments should be >= 0\n";}#endif//error.cpp#include "exc_mean.h"doublehmean(double a, double b);doublegmean(double a, double b);int main(){double x, y, z;cout<< "Enter two numbers:";while (cin>> x >> y){try{z = hmean(x, y);cout<< "Harmonic mean of " << x << " and " << y<<" is " << z <<endl;cout<< "Geomettric mean of " << x << " and " << y<<" is " <<gmean(x, y) <<endl;cout<< "Enter next set of numbers <q to quit>: ";}catch (bad_hmean&bg){cout<<bg.what();cout<< "Error message: \n" <<bg.mesg() <<endl;cout<< "Try again.\n";continue;}catch (bad_gmean&hg){cout<<hg.what();cout<< "Error message: \n" <<hg.mesg() <<endl;cout<< "Sorry, you don't get to play and more.\n";break;}}cout<< "Bye!\n";system("pause");return 0;}doublehmean(double a, double b){if (a == -b)throwbad_hmean();return 2.0*a*b / (a + b);}doublegmean(double a, double b){if (a < 0 || b < 0)throwbad_gmean();returnsqrt(a*b);}3、//exc_mean.h#ifndef EXC_MEAN_H_#define EXC_MEAN_H_#include <iostream>#include <cmath>#include <stdexcept>#include <string>using namespace std;classbad_hmean :public logic_error{private:string name;public:double v1;double v2;explicitbad_hmean(double a = 0, double b = 0,const string &s = "Error in hmean()\n");voidmesg();virtual ~bad_hmean()throw(){}};bad_hmean::bad_hmean(double a, double b, const string &s) :v1(a), v2(b), logic_error(s){name = "hmean";}inline void bad_hmean::mesg(){cout<< name << "(" << v1 << ", " << v2<< ") arguments a=-b should be div a+b=0!\n";}classbad_gmean :public bad_hmean{private:string name;public:explicitbad_gmean(double a = 0, double b = 0,const string &s = "Error in gmean()\n");voidmesg();virtual ~bad_gmean()throw(){}};bad_gmean::bad_gmean(double a, double b, const string &s):bad_hmean(a, b, s){name = "gmean";}inline void bad_gmean::mesg(){cout<< name << "(" <<bad_hmean::v1 << ", " <<bad_hmean::v2 << ") arguments should be >= 0\n";}#endif//error.cpp#include "exc_mean.h"doublehmean(double a, double b);doublegmean(double a, double b);int main(){double x, y, z;cout<< "Enter two numbers:";while (cin>> x >> y){try{z = hmean(x, y);cout<< "Harmonic mean of " << x << " and " << y<<" is " << z <<endl;cout<< "Geomettric mean of " << x << " and " << y<<" is " <<gmean(x, y) <<endl;cout<< "Enter next set of numbers <q to quit>: ";}catch (bad_gmean&hg){cout<<hg.what();cout<< "Error message: \n";hg.mesg();cout<<endl;cout<< "Sorry, you don't get to play and more.\n";break;}catch (bad_hmean&bg){cout<<bg.what();cout<< "Error message: \n";bg.mesg();cout<<endl;cout<< "Try again.\n";continue;}}cout<< "Bye!\n";system("pause");return 0;}doublehmean(double a, double b){if (a == -b)throwbad_hmean();return 2.0*a*b / (a + b);}doublegmean(double a, double b){if (a < 0 || b < 0)throwbad_gmean();returnsqrt(a*b);}4、//sales.h#ifndef SALES_H_#define SALES_H_#include <stdexcept>#include <string>#include <cstring>#include <iostream>#include <cstdlib>using namespace std;class Sales{public:enum { MONTHS = 12 };classbad_index:publiclogic_error{private:int bi;public:explicitbad_index(int ix, const string &s = "Index error in Sales object\n");intbi_val()const { return bi; }virtual ~bad_index()throw(){}};explicit Sales(intyy = 0);Sales(intyy, const double *gr, int n);virtual ~Sales(){}int Year()const { return year; }virtual double operator[](inti)const;virtual double &operator[](inti);private:double gross[MONTHS];int year;};classLabeledSales :public Sales{public:classnbad_index :public Sales::bad_index{private:std::stringlbl;public:nbad_index(const string &lb, int ix,const string &s = "Index error in LabeledSales object\n");const string &label_val()const { return lbl; }virtual ~nbad_index()throw(){}};explicitLabeledSales(const string &lb = "none", intyy = 0);LabeledSales(const string &lb, intyy, const double *gr, int n);virtual ~LabeledSales(){}const string &Label()const { return label; }virtual double operator[](inti)const;virtual double &operator[](inti);private:string label;};#endif//sales.cpp#include "sales.h"Sales::bad_index::bad_index(int ix,const string &s) :logic_error(s), bi(ix){}Sales::Sales(intyy){year = yy;for (inti = 0; i< MONTHS; ++i)gross[i] = 0;}Sales::Sales(intyy, const double *gr, int n){year = yy;intlim = (n < MONTHS) ? n : MONTHS;inti;for (i = 0; i<lim; ++i)gross[i] = gr[i];for (; i< MONTHS; ++i)gross[i] = 0;}double Sales::operator[](inti)const{if (i< 0 || i>= MONTHS)throwbad_index(i);return gross[i];}double&Sales::operator[](inti){if (i< 0 || i>= MONTHS)throwbad_index(i);return gross[i];}LabeledSales::nbad_index::nbad_index(const string &lb, int ix,const string &s) :Sales::bad_index(ix, s){lbl = lb;}LabeledSales::LabeledSales(const string &lb, intyy) : Sales(yy){label = lb;}LabeledSales::LabeledSales(const string &lb, intyy, const double *gr, int n) : Sales(yy, gr, n) {label = lb;}doubleLabeledSales::operator[](inti)const{if (i< 0 || i>= MONTHS)thrownbad_index(Label(), i);return Sales::operator[](i);}double&LabeledSales::operator[](inti){if (i< 0 || i>= MONTHS)thrownbad_index(Label(), i);return Sales::operator[](i);}//use_sales.cpp#include "sales.h"int main(){double vals1[12] ={1220, 1100, 1122, 2212, 1232, 2334,2884, 2393, 3302, 2922, 3002, 3544};double vals2[12] ={12, 11, 22, 21, 32, 24,28, 29, 33, 29, 32, 35};Sales sales1(2011, vals1, 12);LabeledSalessales2("Blogstar", 2012, vals2, 12);Sales::bad_index *s;LabeledSales::nbad_index *l;cout<< "First try block:\n";try{inti;cout<< "Year = " << sales1.Year() <<endl;for (i = 0; i< 12; ++i){cout<< sales1[i] << ' ';if (i % 6 == 5)cout<<endl;}cout<< "Year = " << sales2.Year() <<endl;cout<< "Label = " << bel() <<endl;for (i = 0; i<= 12; ++i){cout<< sales2[i] << ' ';if (i % 6 == 5)cout<<endl;}cout<< "End of try block 1.\n";}catch (logic_error&bad){cout<<bad.what();if (l = dynamic_cast<LabeledSales::nbad_index *>(&bad)) {cout<< "Comany: " << l->label_val() <<endl;cout<< "bad index: " << l->bi_val() <<endl;}else if (s = dynamic_cast<Sales::bad_index *>(&bad))cout<< "bad index: " << s->bi_val() <<endl;}cout<< "\nNext try block:\n";try{sales2[2] = 37.5;sales1[20] = 23345;cout<< "End of try block 2.\n";}catch (logic_error&bad){cout<<bad.what();if (l = dynamic_cast<LabeledSales::nbad_index *>(&bad)){cout<< "Comany: " << l->label_val() <<endl;cout<< "bad index: " << l->bi_val() <<endl;}else if (s = dynamic_cast<Sales::bad_index *>(&bad))cout<< "bad index: " << s->bi_val() <<endl;}cout<< "done\n";system("pause");return 0;}。

C++ Primer Plus(第6版)中文版》编程练习答案第6-10章

第6章分支语句和逻辑运算符//ex6.1#include<iostream>#include<cctype>int main(){using namespace std;char ch;cin.get(ch);while (ch != '@'){if (!isdigit(ch)){if (isupper(ch))ch = tolower(ch);else if (islower(ch))ch = toupper(ch);cout << ch;}cin.get(ch);}return 0;}//ex6.2#include<iostream>const int Max = 10;int main(){using namespace std;double num[Max];int i = 0;cout << "Number 1: ";while (i < Max && cin >> num[i]){if (++i < Max)cout << "Number " << i+1 << ": ";}double total = 0.0;for (int j = 0; j < i; j++)total += num[j];double Average = total/i;cout << "Average = " << Average << endl;int q = 0;for (int j = 0; j < i; j++)if (num[j] > Average)q++;cout << q << " numbers > average.\n";return 0;}//ex6.3#include<iostream>int main(){using namespace std;char ch;cout << "Please enter one of the choice:\n"<< "c) carnivore p) pianist\n"<< "t) tree g) game\n";cin >> ch;while (ch != 'c' && ch != 'p' && ch != 't' && ch != 'g'){cout << "Please enter a c, p, t, or g: ";cin >> ch;}switch (ch){case'c' : cout << "A cat is a carnivore.\n";break;case'p' : cout << "Radu Lupu is a pianist.\n";break;case't' : cout << "A maple is a tree.\n";break;case'g' : cout << "Golf is a game.\n";break;default : cout << "The program shouldn't get here!\n";}return 0;}//ex6.4#include<iostream>const int strsize = 20;struct bop{char fullname[strsize];char title[strsize];char bopname[strsize];int preference;};int main(){using namespace std;bop member[5] = {{"Wimp Macho", "English Teacher", "DEMON", 0},{"Raki Rhodes", "Junior Programmer", "BOOM", 1},{"Celia Laiter", "Super Star", "MIPS", 2},{"Hoppy Hipman", "Analyst Trainee", "WATEE", 1},{"Pat Hand", "Police", "LOOPY", 2}};char ch;cout << "Benevolent Order of Programmers Report\n"<< "a. display by name b. display by title\n"<< "c. display by bopname d. display by preference\n"<< "q. quit\n";cout << "Enter your choice: ";while (cin >> ch && ch != 'q'){switch (ch){case'a': for (int i = 0; i < 5; i++)cout << member[i].fullname << endl;break;case'b': for (int i = 0; i < 5; i++)cout << member[i].title << endl;break;case'c': for (int i = 0; i < 5; i++)cout << member[i].bopname << endl;break;case'd': for (int i = 0; i < 5; i++){if (member[i].preference == 0)cout << member[i].fullname << endl;else if (member[i].preference == 1)cout << member[i].title << endl;elsecout << member[i].bopname << endl;}break;}cout << "Next choice: ";}cout << "Bye!" << endl;return 0;}//ex6.5#include<iostream>const double LEV1 = 5000;const double LEV2 = 15000;const double LEV3 = 35000;const double RATE1 = 0.10;const double RATE2 = 0.15;const double RATE3 = 0.20;int main(){using namespace std;double income, tax;cout << "Enter your annual income in tvarps: ";cin >> income;if (income <= LEV1)tax = 0;else if (income <= LEV2)tax = (income - LEV1) * RATE1;else if (income <= LEV3)tax = RATE1 * (LEV2 - LEV1) + RATE2 * (income - LEV2);elsetax = RATE1 * (LEV2 - LEV1) + RATE2 * (LEV3 - LEV2)+ RATE3 * (income - LEV3);cout << "You owe Neutronia " << tax << " tvarps in taxes.\n";return 0;}//ex6.6#include<iostream>#include<string>using namespace std;struct Patrons{string name;double money;};int main(){cout << "输入捐赠者的数目: ";int num;cin >> num;Patrons* ps = new Patrons[num];cout << "输入每一个捐赠者的姓名和款项:\n";for (int i=0; i<num; i++){cout << "输入第" << i+1 << "位姓名: ";cin >> ps[i].name;cout << "输入第" << i+1 << "位款项: ";cin >> ps[i].money;}cout << "Grand Patron\n";for (int i=0; i<num; i++){if (ps[i].money > 10000)cout << ps[i].name << endl;}cout << "\nPatron\n";for (int i=0; i<num; i++){if (ps[i].money <= 10000)cout << ps[i].name << endl;}return 0;}//ex6.7#include<iostream>#include<string>#include<cctype>int main(){using namespace std;string word;int vowel = 0;int consonant = 0;int other = 0;char ch;cout << "Enter words (q to quit):\n";cin >> word;while (word != "q"){ch = tolower(word[0]);if (isalpha(ch)){if (ch == 'a' || ch == 'e' || ch == 'i' || ch == 'o' || ch == 'u')vowel ++;elseconsonant ++;}elseother ++;cin >> word;}cout << vowel << " words beginning with vowel\n"<< consonant << " words beginning with consonants\n"<< other << " others\n";return 0;}//ex6.8#include<iostream>#include<fstream>#include<cstdlib>const int SIZE = 60;int main(){using namespace std;char filename[SIZE];ifstream inFile;cout << "Enter name of data file: ";cin.getline(filename, SIZE);inFile.open(filename);if (!inFile.is_open()){cout << "Could not open the file " << filename << endl;cout << "Program terminating.\n";exit(EXIT_FAILURE);}int count = 0;char ch;inFile >> ch;while (inFile.good()){count ++;inFile >> ch; // get next value}cout << count << " characters in " << filename << endl;inFile.close(); // finished with the filereturn 0;}//ex6.9#include<iostream>#include<string>#include<fstream>#include<cstdlib>const int SIZE = 60;using namespace std;struct Patrons{string name;double money;};int main(){char filename[SIZE];ifstream inFile;cout << "Enter name of data file: ";cin.getline(filename, SIZE);inFile.open(filename);if (!inFile.is_open()){cout << "Could not open the file " << filename << endl;cout << "Program terminating.\n";exit(EXIT_FAILURE);}int num;inFile >> num;inFile.get();Patrons* ps = new Patrons[num];for (int i = 0; i<num; i++){getline(inFile, ps[i].name);inFile >> ps[i].money;inFile.get();}cout << "\nGrand Patrons:\n";int count1 = 0;for (int i = 0; i < num; i++){if (ps[i].money > 10000){cout << ps[i].name <<endl;count1++;}}if (count1 == 0)cout << "none";cout << "\nPatrons:\n";int count2 = 0;for (int i = 0; i < num; i++){if (ps[i].money <= 10000){cout << ps[i].name <<endl;count2++;}}if (count2 == 0)cout << "none";delete [] ps;inFile.close();return 0;}第7章函数——C++的编程模块//ex7.1#include<iostream>double t_av(double x, double y);int main(){using namespace std;double x, y;double result;cout << "Please enter two numbers (0 to stop): ";while ((cin >> x >> y) && x != 0 && y != 0){result = t_av(x, y);cout << "调和平均数 = " << result << endl;cout << "Please enter two numbers (0 to stop): ";}return 0;}double t_av(double x, double y){return 2.0 * x * y / (x + y);}//ex7.2#include<iostream>const int MAX = 10;using namespace std;int fill_ar(double ar[], int limit);void show_ar(const double ar[], int n);double average(const double ar[], int n);int main(){double scores[MAX];int size = fill_ar(scores, MAX);show_ar(scores, size);if (size > 0)cout << "The average of scores is: "<< average(scores, size) << endl;return 0;}int fill_ar(double ar[], int limit){double temp;int i;for (i = 0; i < limit; i++){cout << "Enter score #" << i+1 << ": ";cin >> temp;if (!cin){cin.clear();while (cin.get() != '\n')continue;cout << "Bad input; enter a number: ";break;}if (temp < 0)break;ar[i] = temp;}return i;}void show_ar(const double ar[], int n){for (int i = 0; i < n; i++)cout << "score #" << i+1 << ": " << ar[i] << endl; }double average(const double ar[], int n){double sum = 0.0;for (int i = 0; i < n; i++)sum += ar[i];return sum / n;}//ex7.3#include<iostream>struct box{char maker[40];float height;float width;float length;float volume;};void set_box(box *);void show_box(box);int main(){using namespace std;box carton = {"Bingo Boxer", 2, 3, 5};set_box(&carton);show_box(carton);return 0;}void set_box(box * pb){pb->volume = pb->height * pb->length * pb->width;}void show_box(box b){using namespace std;cout << "Box maker: " << b.maker<< "\nheight: " << b.height<< "\nlwidth: " << b.width<< "\nlength: " << b.length<< "\nvolume: " << b.volume << endl;}//ex7.4#include<iostream>long double probability(unsigned numbers, unsigned picks);int main(){using namespace std;double total, choices, mtotal;long double probability1, probability2;cout << "Enter total number of game card choices and\n""number of picks allowed for the field:\n";while ((cin >> total >> choices) && choices < total){cout << "Enter total number of game card choices and\n""number of picks allowed for the mega:\n";if (!(cin >> mtotal))break;probability1 = probability(total, choices);probability2 = probability(mtotal, 1);cout << "The chances of getting all "<< choices << " picks is one in "<< probability1 << ".\n";cout << "The chances of getting the megaspot is one in "<< probability2 << ".\n";cout << "You have one chance in ";cout << probability1 * probability2;cout << " of winning.\n";cout << "Next set of numbers (q to quit): ";}cout << "bye\n";return 0;}long double probability(unsigned numbers, unsigned picks){long double result = 1.0;long double n;unsigned p;for (n = numbers, p = picks; p > 0; n--, p--)result = result * n / p;return result;}//ex7.5#include<iostream>long long int recure(int);int main(){using namespace std;int number;cout << "Enter a integer (q to stop): ";while (cin >> number){long long int result = recure(number);cout << number << "! = " << result << endl;cout << "Next:";}cout << "Done!" << endl;return 0;}long long int recure(int n){long long int result;if (n > 0)result = n * recure(n-1);elseresult = 1;return result;}//ex7.6#include<iostream>const int Size = 10;int Fill_array(double ar[], int n);void Show_array(const double ar[], int n); void Reverse_array(double ar[], int n);int main(){using namespace std;double values[Size];int len = Fill_array(values, Size);cout << "Array values:\n";Show_array(values, len);cout << "Array reversed:\n";Reverse_array(values, len);Show_array(values, len);cout << "All but end values reversed:\n";Reverse_array(values+1, len-2);Show_array(values, len);return 0;}int Fill_array(double ar[], int n){using namespace std;double temp;int i;for (i=0; i<n; i++){cout << "Enter value #" << i+1 << ": ";cin >> temp;if (!cin)break;ar[i] = temp;}cout << endl;return i;}void Show_array(const double ar[], int n){using namespace std;for (int i=0; i<n; i++)cout << "Property #" << i+1 << ": "<< ar[i] << endl;cout << endl;}void Reverse_array(double ar[], int n){double temp;for (int i=0,j=n-1; i<j; i++,j--){temp = ar[i];ar[i] = ar[j];ar[j] = temp;}}//ex7.7#include<iostream>const int Max = 5;double * fill_array(double * begin, double * end);void show_array(const double * begin, const double * end); void revalue(double r, double * begin, double * end);int main(){using namespace std;double properties[Max];double * pbegin = properties;double * pend = fill_array(pbegin, pbegin + Max);show_array(pbegin, pend);if (pend-pbegin > 0){cout << "Enter revaluation factor: ";double factor;while (!(cin >> factor)){cin.clear();while (cin.get() != '\n')continue;cout << "Bad input; Please enter a number: ";}revalue(factor, pbegin, pend);show_array(pbegin, pend);}cout << "Done.\n";return 0;}double * fill_array(double * begin, double * end){using namespace std;double temp;int i = 1;while (begin < end){cout << "Enter value #" << i << ": ";cin >> temp;if (!cin){cin.clear();while (cin.get() != '\n')continue;cout << "Bad input; input process terminated.\n";break;}else if (temp < 0)break;*begin = temp;begin++;i++;}return begin;}void show_array(const double * begin, const double * end){using namespace std;int i = 1;while (begin < end){cout << "Property #" << i << ": $";cout << *begin << endl;begin++;i++;}}void revalue(double r, double * begin, double * end){while (begin < end){*begin *= r;begin++;}}//ex7.8a#include<iostream>const int Seasons = 4;const char * Snames[] = {"Spring", "Summer", "Fall", "Winter"}; void fill(double ar[], int n);void show(double ar[], int n);int main(){using namespace std;double expenses[Seasons];fill(expenses, Seasons);show(expenses, Seasons);return 0;}void fill(double ar[], int n){using namespace std;for (int i=0; i<n; i++){cout << "Enter " << Snames[i] << " expenses: ";cin >> ar[i];}}void show(double ar[], int n){using namespace std;cout << "\nEXPENSES\n";double total = 0.0;for (int i=0; i<n; i++){cout << Snames[i] << ": $" << ar[i] <<endl;total += ar[i];}cout << "Total Expenses: $" << total << endl;}//ex7.8b（传递结构值）#include<iostream>const int Seasons = 4;struct data{double arr[Seasons];};const char * Snames[] = {"Spring", "Summer", "Fall", "Winter"}; data fill();void show(data);int main(){using namespace std;data expenses = fill();show(expenses);return 0;}data fill(){using namespace std;data expenses;for (int i=0; i<Seasons; i++)cout << "Enter " << Snames[i] << " expenses: ";cin >> expenses.arr[i];}return expenses;}void show(data expenses){using namespace std;cout << "\nEXPENSES\n";double total = 0.0;for (int i=0; i<Seasons; i++){cout << Snames[i] << ": $" << expenses.arr[i] <<endl;total += expenses.arr[i];}cout << "Total Expenses: $" << total << endl;}//ex7.8b（传递结构指针）#include<iostream>const int Seasons = 4;struct data{double arr[Seasons];};const char * Snames[] = {"Spring", "Summer", "Fall", "Winter"}; void fill(data * pd);void show(data * pd);int main(){using namespace std;data expenses;fill(&expenses);show(&expenses);return 0;}void fill(data * pd){using namespace std;for (int i=0; i<Seasons; i++)cout << "Enter " << Snames[i] << " expenses: ";cin >> pd->arr[i];}}void show(data * pd){using namespace std;cout << "\nEXPENSES\n";double total = 0.0;for (int i=0; i<Seasons; i++){cout << Snames[i] << ": $" << pd->arr[i] <<endl;total += pd->arr[i];}cout << "Total Expenses: $" << total << endl;}//ex7.9#include<iostream>using namespace std;const int SLEN = 30;struct student {char fullname[SLEN];char hobby[SLEN];int ooplevel;};int getinfo(student pa[], int n);void display1(student st);void display2(const student * ps);void display3(const student pa[], int n);int main(){cout << "Enter class size: ";int class_size;cin >> class_size;while (cin.get() != '\n')continue;student * ptr_stu = new student[class_size];int entered = getinfo(ptr_stu, class_size);for (int i = 0; i < entered; i++)display1(ptr_stu[i]);display2(&ptr_stu[i]);}display3(ptr_stu, entered);delete [] ptr_stu;cout << "Done\n";return 0;}// getinfo() has two arguments: a pointer to the first element of // an array of student structures and an int representing the// number of elements of the array. The function solicits and// stores data about students. It terminates input upon filling// the array or upon encountering a blank line for the student// name. The function returns the actual number of array elements // filled.int getinfo(student pa[], int n){int num_array_elem = n;char tmp[SLEN];for (int i = 0; i < n; ++i){cout << "Enter name: ";cin.getline(tmp, SLEN);bool blank_line = true;for (unsigned j = 0; j < strlen(tmp); ++j){if (!isspace(tmp[j])){blank_line = false;break;}}if (blank_line){num_array_elem = i;break;}strcpy(pa[i].fullname, tmp);cout << "Enter hobby: ";cin.getline(pa[i].hobby, SLEN);cout << "Enter ooplevel: ";cin >> pa[i].ooplevel;cin.get();}cout << endl;return num_array_elem;}// display1() takes a student structure as an argument// and displays its contentsvoid display1(student st){cout << st.fullname << '\t'<< st.hobby << '\t'<< st.ooplevel << endl;}// display2() takes the address of student structure as an// argument and displays the structure’¡¥s contentsvoid display2(const student * ps){cout << ps->fullname << '\t'<< ps->hobby << '\t'<< ps->ooplevel << endl;}// display3() takes the address of the first element of an array// of student structures and the number of array elements as// arguments and displays the contents of the structuresvoid display3(const student pa[], int n){for (int i = 0; i < n; ++i)cout << pa[i].fullname << '\t' << pa[i].hobby << '\t' <<pa[i].ooplevel << endl;}//ex7.10#include<iostream>double calculate(double x, double y, double (*pf)(double, double)); double add(double x, double y);double sub(double x, double y);double mean(double x, double y);int main(){using namespace std;double a, b;double (*pf[3])(double, double) = {add, sub, mean};char * op[3] = {"add", "sub", "mean"};cout << "Enter pairs of numbers (q to quit): ";while (cin >> a >> b){for (int i=0; i<3; i++){cout << op[i] << ": " << a << " and " << b << " = "<< calculate(a, b, pf[i]) << endl;}}}double calculate(double x, double y, double (*pf)(double, double)) {return (*pf)(x, y);}double add(double x, double y){return x + y;}double sub(double x, double y){return x - y;}double mean(double x, double y){return (x + y) / 2.0;}第8章函数探幽//ex8.1#include<iostream>void show(const char * ps, int n = 0);int main(){using namespace std;char * pstr = "Hello\n";show(pstr);int num;cout << "Enter a number: ";cin >> num;show(pstr, num);cout << "Done\n";return 0;}void show(const char * ps, int n){using namespace std;int lim = n;if (n == 0)lim = 1;for (int i=0; i<lim; i++)cout << ps;}//ex8.2#include<iostream>#include<string>using namespace std;struct CandyBar{string name;double weight;int hot;};void set(CandyBar & cb, char * ps, double w, int h); void show(const CandyBar & cb);int main(){using namespace std;CandyBar candy;char * p = "Millennium Munch";double x = 2.85;int y = 350;set(candy, p, x, y);show(candy);return 0;}void set(CandyBar & cb, char * ps, double w, int h){ = ps;cb.weight = w;cb.hot = h;}void show(const CandyBar & cb){cout << "Name: " << << endl<< "Weight: " << cb.weight << endl<< "Hot: " << cb.hot << endl;}//ex8.3#include<iostream>#include<string>#include<cctype>using namespace std;void str_to_upper(string & str);int main(){string str1;cout << "Enter a string (q to quit): ";while (getline(cin, str1) && str1!="q" && str1!="Q") {str_to_upper(str1);cout << str1 << endl;cout << "Next string (q to quit): ";}cout << "Bye.";return 0;}void str_to_upper(string & str){int limit = str.size();for (int i=0; i<limit; i++){if (isalpha(str[i]))str[i] = toupper(str[i]);}}// ex8.4#include<iostream>#include<cstring>// for strlen(), strcpy()using namespace std;struct stringy {char * str; // points to a stringint ct; // length of string (not counting '\0')};void show(const char *str, int cnt = 1);void show(const stringy & bny, int cnt = 1);void set(stringy & bny, const char * str);int main(void){stringy beany;char testing[] = "Reality isn't what it used to be.";set(beany, testing); // first argument is a reference,// allocates space to hold copy of testing,// sets str member of beany to point to the// new block, copies testing to new block,// and sets ct member of beany show(beany); // prints member string onceshow(beany, 2); // prints member string twicetesting[0] = 'D';testing[1] = 'u';show(testing); // prints testing string onceshow(testing, 3); // prints testing string thriceshow("Done!");return 0;}void show(const char *str, int cnt){while(cnt-- > 0)cout << str << endl;}}void show(const stringy & bny, int cnt){while(cnt-- > 0){cout << bny.str << endl;}}void set(stringy & bny, const char * str){bny.ct = strlen(str);bny.str = new char[bny.ct+1];strcpy(bny.str, str);}//ex8.5#include<iostream>const int Limit = 5;template <typename T>T max5(T ar[]);int main(){using namespace std;int ari[Limit] = {1, 2, 3, 5, 4};double ard[Limit] = {1.1, 2.2, 3.3, 5.5, 4.4};int maxi = max5(ari);double maxd = max5(ard);cout << "maxi = " << maxi << endl;cout << "maxd = " << maxd << endl;return 0;}template <typename T>T max5(T ar[]){T max = ar[0];for (int i=1; i<Limit; i++)if (max < ar[i])max = ar[i];}return max;}//ex8.6#include<iostream>template <typename T>T maxn(T ar[], int n);template <> const char* maxn(const char* ar[], int n);int main(){using namespace std;int ari[6] = {1, 2, 3, 4, 6, 5};double ard[4] = {1.1, 2.2, 4.4, 3.3};const char * ars[5] = {"a","bb","ccc","ddddd","eeee"};cout << "The max integer of array is: " << maxn(ari, 6) << endl;cout << "The max double of array is: " << maxn(ard, 4) << endl;cout << "The max string of array is: " << maxn(ars, 5)<<endl; }template <typename T>T maxn(T ar[], int n){T maxar = ar[0];for (int i=1; i<n; i++){if (maxar < ar[i])maxar = ar[i];}return maxar;}template <> const char* maxn(const char* ar[],int n) {const char * maxs = ar[0];for (int i=1; i<n; i++){if (strlen(maxs) < strlen(ar[i]))maxs = ar[i];}return maxs;}//ex8.7#include<iostream>template <typename T>T SumArrray(T arr[], int n);template <typename T>T SumArrray(T * arr[], int n);struct debts{char name[50];double amount;};int main(){using namespace std;int things[6] = {13, 31, 103, 301, 310, 130};struct debts mr_E[3] ={{"Ima Wolfe", 2400.0},{"Ura Foxe", 1300.0},{"Iby Stout", 1800.0}};double * pd[3];for (int i=0; i<3; i++)pd[i] = &mr_E[i].amount;cout << "Sum: Mr.E's counts of things: "<< SumArrray(things, 6) << endl;cout << "Sum: Mr.E's debts: "<< SumArrray(pd, 3) << endl;return 0;。

C++ primer plus(第6版)中文版编程练习答案第16章

1、//Reverse.cpp#include <iostream>#include <string>using namespace std;boolisReverse(const string &s1, const string &s2);int main(){string words;cout<< "Enter a string (quit to quit): \n";while (cin>> words&&words != "quit"){stringrwords(words.rbegin(), words.rend());cout<< "words: " << words <<endl;if (isReverse(rwords, words))cout<< words << " is reverse words.\n";elsecout<< words << " is not reverse words.\n";cout<< "Enter a next words (quit to quit): \n";}system("pause");return 0;}boolisReverse(const string &s1, const string &s2){if (pare(s2))return false;elsereturn true;}2、//Reverse.cpp#include <iostream>#include <string>#include <cctype>using namespace std;boolisReverse(const string &s1, const string &s2); voidToLower(string &s1);int main(){string words;cout<< "Enter a string (quit to quit): \n";getline(cin, words);while (words != "quit"){ToLower(words);stringrwords(words.rbegin(), words.rend());cout<< "words: " << words <<endl;if (isReverse(rwords, words))cout<< words << " is reverse words.\n";elsecout<< words << " is not reverse words.\n";cout<< "Enter a next words (quit to quit): \n";getline(cin, words);}system("pause");return 0;}boolisReverse(const string &s1, const string &s2){if (pare(s2))return false;elsereturn true;}voidToLower(string &s1){unsignedinti = 0;while (i< s1.length()){if (isalpha(s1[i])){s1[i] = tolower(s1[i]);i++;}elses1.replace(i, s1.size(), s1, i + 1, s1.size());}}3、//hangman.cpp#include <iostream>#include <string>#include <cstdlib>#include <ctime>#include <cctype>#include <fstream>#include <vector>using namespace std;vector<string> wordlist;voidFillWord();int main(){srand(time(0));char play;cout<< "Will you play a word game? <y/n> ";cin>> play;play = tolower(play);FillWord();while (play == 'y'){string target = wordlist[rand() % wordlist.size()];int length = target.length();string attempt(length, '-');stringbadchars;int guesses = 6;cout<< "Guess my secret word. It has " << length<< " letters, and you guess\n"<< "one letter at a time. You get " << guesses<<" wrong guesses.\n";cout<< "Your word: " << attempt <<endl;while (guesses > 0 && attempt != target){char letter;cout<< "Guess a letter: ";cin>> letter;if (badchars.find(letter) != string::npos|| attempt.find(letter) != string::npos){cout<< "You already guessed that. Try again.\n";continue;}intloc = target.find(letter);if (loc == string::npos){cout<< "Oh,bad guess!\n";--guesses;badchars += letter;}else{cout<< "Good guess!\n";attempt[loc] = letter;loc - target.find(letter, loc + 1);while (loc != string::npos){attempt[loc] = letter;loc = target.find(letter, loc + 1);}}cout<< "Your word: " << attempt <<endl;if (attempt != target){if (badchars.length() > 0)cout<< "Bad choices: " <<badchars<<endl;cout<< guesses << " bad guesses left\n";}}if (guesses > 0)cout<< "That's right!\n";elsecout<< "Sorry, the word is " << target << ".\n";cout<< "Will you play another? <y/n> ";cin>> play;play = tolower(play);}cout<< "Bye\n";system("pause");return 0;}voidFillWord(){ifstream fin;string letter;fin.open("letters.txt");if (fin.is_open() == false){cerr<< "Can't open file. Bye.\n";exit(EXIT_FAILURE);}while (fin){fin>> letter;wordlist.push_back(letter);}fin.close();}//letters.txtapiary beetle cereal danger ensign florid garage healthinsult jackal keeper loaner manage nonce onset plaidquilt remote stolid train useful valid whence xenon yearn zippy4、//Reduce.cpp#include <iostream>#include <list>#include <algorithm>using namespace std;int reduce(long ar[], int n);voidoutlong(int n){ cout<< n << " "; }int main(){long a[10] = { 1, 3, 2, 4, 7, 6, 3, 4, 8, 10 };intnums = reduce(a, 10);cout<< "Numbers after reduce: " <<nums<<endl;system("pause");return 0;}int reduce(long ar[], int n){list<long>arr;arr.insert(arr.begin(), ar, ar + n);arr.sort();arr.unique();for_each(arr.begin(), arr.end(), outlong);cout<<endl;returnarr.size();}5、//Reduce.cpp#include <iostream>#include <list>#include <algorithm>#include <string>using namespace std;template<class T>int reduce(T ar[], int n);template<class T>voidoutlong(T n){ cout<< n << " "; }int main(){long a[10] = { 1, 3, 2, 4, 7, 6, 3, 4, 8, 10 };int nums1 = reduce(a, 10);cout<< "Numbers after reduce: " << nums1 <<endl;string b[10] = { "qwe", "qwe", "ret", "tyu", "dfg", "jkl", "iok", "kjl", "ads", "def" };int nums2 = reduce(b, 10);cout<< "Numbers after reduce: " << nums2 <<endl;system("pause");return 0;}template<class T>int reduce(T ar[], int n){list<T>arr;arr.insert(arr.begin(), ar, ar + n);arr.sort();arr.unique();for_each(arr.begin(), arr.end(), outlong<T>);cout<<endl;returnarr.size();}6、//bank.cpp#include <iostream>#include <cstdlib>#include <queue>#include <ctime>using namespace std;class Customer{private:long arrive;intprocesstime;public:Customer(){ arrive = processtime = 0; }void set(long when){processtime = rand() % 3 + 1;arrive = when;}long when()const{ return arrive; }intptime()const{ return processtime; }};typedef Customer Item;constint MIN_PER_HR = 60;boolnewcustomer(double x);int main(){srand(time(0));cout<< "Case Study: Bank of Heather Automatic Teller\n";cout<< "Enter maximum size of queue: ";intqs;cin>>qs;queue<Item> line;cout<< "Enter the number of simulation hours: ";int hours;cin>> hours;longcyclelimit = MIN_PER_HR*hours;cout<< "Enter the average number of customers per hour: ";doubleperhour;cin>>perhour;doublemin_per_cust;min_per_cust = MIN_PER_HR / perhour;Item temp;longturnaways = 0;long customers = 0;long served = 0;longsum_line = 0;intwait_time = 0;longline_wait = 0;for (int cycle = 0; cycle <cyclelimit; cycle++){if (newcustomer(min_per_cust)){if (line.size() == qs)turnaways++;else{customers++;temp.set(cycle);line.push(temp);}}if (wait_time<= 0 && !line.empty()){line.pop();wait_time = temp.ptime();line_wait += cycle - temp.when();served++;}if (wait_time> 0)wait_time--;sum_line += line.size();}if (customers > 0){cout<< "customers accepted: " << customers <<endl;cout<< " customers served: " << served <<endl;cout<< " turnaways: " <<turnaways<<endl;cout<< "average queue size: ";cout.precision(2);cout.setf(ios_base::fixed, ios_base::floatfield);cout<< (double)sum_line / cyclelimit<<endl;cout<< " average wait time: "<< (double)line_wait / served << " minutes\n"; }elsecout<< "No customers!\n";cout<< "Done!\n";system("pause");return 0;}boolnewcustomer(double x){return (rand()*x / RAND_MAX < 1);}7、//Lotto.cpp#include <vector>#include <iostream>#include <iterator>#include <algorithm>#include <ctime>using namespace std;vector<int> Lotto(int l1, int l2);void Show(int n);int main(){vector<int> winners;winners = Lotto(51, 6);for_each(winners.begin(), winners.end(), Show);system("pause");return 0;}vector<int> Lotto(int l1, int l2){vector<int>nums;vector<int> nums2;srand(time(0));for (inti = 0; i< l1; i++)nums.push_back(i);random_shuffle(nums.begin(), nums.end());for (inti = 0; i< l2; i++)nums2.push_back(nums[rand() % l1 + 1]);return nums2;}void Show(int n){cout<< "The winner is " << n <<endl;}8、//name.cpp#include <iostream>#include <string>#include <set>#include <algorithm>#include <iterator>int main(){using namespace std;ostream_iterator<string, char>out(cout, " ");string fname1;set<string> A;cout<< "Enter Mat's friends(quit to quit): \n";getline(cin, fname1);while (fname1 != "quit"){A.insert(fname1);getline(cin, fname1);}cout<< "Mat's friends: \n";copy(A.begin(), A.end(), out);cout<<endl;string fname2;set<string> B;cout<< "Enter Pat's friends(quit to quit): \n";getline(cin, fname1);while (fname1 != "quit"){B.insert(fname1);getline(cin, fname1);}cout<< "Pat's friends: \n";copy(B.begin(), B.end(), out);cout<<endl;cout<< "Union of Mat and Pat's friends: ";set_union(A.begin(), A.end(), B.begin(), B.end(), out);cout<<endl;system("pause");return 0;}9、//sorttime.cpp#include <iostream>#include <vector>#include <list>#include <ctime>#include <iterator>#include <algorithm>using namespace std;constint Size = 10000;int main(){clock_t start, end;vector<int> vi0(Size);list<int> li(Size);srand(time(0));for (inti = 0; i< Size; i++){vi0[i] = rand() % Size;}copy(vi0.begin(), vi0.end(), back_inserter(li));vector<int> vi(vi0);start = clock();sort(vi.begin(), vi.end());end = clock();cout<< "Time of Sort Vector:" << (double)(end - start) / CLOCKS_PER_SEC <<endl;start = clock();li.sort();end = clock();cout<< "Time of Sort List:" << (double)(end - start) / CLOCKS_PER_SEC <<endl;copy(vi0.begin(), vi0.end(), back_inserter(li));start = clock();copy(li.begin(), li.end(), back_inserter(vi));sort(vi.begin(), vi.end());copy(vi.begin(), vi.end(), back_inserter(li));end = clock();cout<< "Time of Sort List2:" << (double)(end - start) / CLOCKS_PER_SEC <<endl;system("pause");return 0;}10、//vect.cpp#include <iostream>#include <string>#include <vector>#include <algorithm>#include <memory>#include <cstdlib>using namespace std;struct Review{string title;int rating;double price;};bool operator<(constshared_ptr<Review>&r1, constshared_ptr<Review>&r2); boolworseThan(constshared_ptr<Review>&r1, constshared_ptr<Review>&r2); boolbetterThan(constshared_ptr<Review>&r1, constshared_ptr<Review>&r2); boolworseThanP(constshared_ptr<Review>&r1, constshared_ptr<Review>&r2); boolbetterThanP(constshared_ptr<Review>&r1, constshared_ptr<Review>&r2); boolFillReview(shared_ptr<Review>&rr);shared_ptr<Review>make_Review();voidShowReview(shared_ptr<Review>&rr);int main(){vector<shared_ptr<Review>> books;shared_ptr<Review>temp(new Review);while (FillReview(temp)){books.push_back(temp);temp = make_Review();}if (books.size() > 0){vector<shared_ptr<Review>>sbook(books);cout<< "Thank you. You entered the following:\n"<<books.size() << " ratings:\n" << "Rating\tBook\tPrice\n";for_each(books.begin(), books.end(), ShowReview);charch;cout<< "Enter measures of sort:\no to old";cout<< "t to title, r to down rating,\nR to up rating""p to down price,P to up price, f(F) to shuffle,\nq to quit:";cin>>ch;while (tolower(ch) != 'q'){switch (ch){case'o':cout<< "Not Sort:\nRating\tBook\tPrice\n";for_each(books.begin(), books.end(), ShowReview);break;case't':sort(sbook.begin(), sbook.end());cout<< "Sorted by title:\nRating\tBook\tPrice\n";for_each(sbook.begin(), sbook.end(), ShowReview);break;case'r':sort(sbook.begin(), sbook.end(), worseThan);cout<< "Sorted by down rating:\nRating\tBook\tPrice\n";for_each(sbook.begin(), sbook.end(), ShowReview);break;case'R':sort(sbook.begin(), sbook.end(), betterThan);cout<< "Sorted by up rating:\nRating\tBook\tPrice\n";for_each(sbook.begin(), sbook.end(), ShowReview);break;case'p':sort(sbook.begin(), sbook.end(), worseThanP);cout<< "Sorted by down price:\nRating\tBook\tPrice\n";for_each(sbook.begin(), sbook.end(), ShowReview);break;case'P':sort(sbook.begin(), sbook.end(), betterThanP);cout<< "Sorted by up price:\nRating\tBook\tPrice\n";for_each(sbook.begin(), sbook.end(), ShowReview);break;case'F':case'f':random_shuffle(sbook.begin(), sbook.end());cout<< "After shuffling:\nRating\tBook\n";for_each(sbook.begin(), sbook.end(), ShowReview);break;default:cout<< "Error input!Input again!";break;}cout<< "Enter the next measures:\no to old";cout<< "t to title, r to down rating,\nR to up rating""p to down price,P to up price, q to quit:";cin>>ch;}}elsecout<< "No entries. ";cout<< "Bye.\n";system("pause");return 0;}bool operator<(constshared_ptr<Review>&r1, constshared_ptr<Review>&r2) {if (r1->title < r2->title)return true;else if (r1->title == r2->title&&r1->rating < r2->rating)return true;elsereturn false;}boolworseThan(constshared_ptr<Review>&r1, constshared_ptr<Review>&r2) {if (r1->rating < r2->rating)return true;elsereturn false;}boolbetterThan(constshared_ptr<Review>&r1, constshared_ptr<Review>&r2) {if (r1->rating > r2->rating)return true;elsereturn false;}boolworseThanP(constshared_ptr<Review>&r1, constshared_ptr<Review>&r2) {if (r1->price < r2->price)return true;elsereturn false;}boolbetterThanP(constshared_ptr<Review>&r1, constshared_ptr<Review>&r2) {if (r1->price > r2->price)return true;elsereturn false;}shared_ptr<Review>make_Review(){returnshared_ptr<Review>(new Review);}boolFillReview(shared_ptr<Review>&rr){cout<< "Enter book title (quit to quit): ";getline(cin, rr->title);if (rr->title == "quit")return false;cout<< "Enter book rating: ";cin>>rr->rating;cout<< "Enter book price: ";cin>>rr->price;if (!cin)return false;while (cin.get() != '\n')continue;return true;}voidShowReview(shared_ptr<Review>&rr){cout<<rr->rating << "\t" <<rr->title << "\t" <<rr->price <<endl;}。

C++ primer plus(第6版)中文版编程练习答案第10章

第10章1、//Customs.h#include <stdio.h>#include <tchar.h>#include <string>#include <iostream>using namespace std;class Customs{private:string name;string accnum;double balance;public:Customs(const string &client, const string &num, double bal = 0.0);~Customs();void show()const;bool deposit(double cash);bool withdraw(double cash);};//Customs.cpp#include "Customs.h"Customs::Customs(const string &client,const string &num, double bal) {accnum = num;name = client;balance = bal;}Customs::~Customs(){}bool Customs::deposit(double cash){if (cash <= 0){cout << "Deposit must greater than zero\n";return false;}else{cout << "Custom deposits $" << cash << " dolars.\n";balance += cash;return true;}}bool Customs::withdraw(double cash){if (cash <= 0 || (balance - cash) < 0){cout << "Withdraw money error, must less than balance and greater than zero\n";return false;}else{cout << "Custom withdraws $" << cash << " dolars\n";balance -= cash;return true;}}void Customs::show()const{cout << "Account custom's name is " << name << endl;cout << "Account number is " << accnum << endl;cout << "Custom's balance is " << balance << endl;}//main.cpp#include "Customs.h"int main(){double input, output;char ch;Customs custom=Customs("Jacky","Jc",3000.32);custom.show();cout << "Please enter A to deposit balance ,\n"<< "P to withdraw balance, or Q to quit.: ";while (cin >> ch && toupper(ch)!='Q'){while (cin.get() != '\n')continue;if (!isalpha(ch)){cout << '\a';continue;}switch (ch){case'A':case'a':cout << "Enter a account number to deposit: ";cin >> input;if (!custom.deposit(input))cout << "Add error\n";elsecout << "Add success\n";break;case'P':case'p':cout << "Enter a account number to withdraw: ";cin >> output;if (!custom.withdraw(output))cout << "Withdraw error\n";elsecout << "Withdraw success\n";break;}custom.show();cout << "Please enter A to deposit balance ,\n"<< "P to withdraw balance, or Q to quit: ";}cout << "Bye\n";cin.get();cin.get();return 0;}2、//person.h#ifndef PERSON_H_#define PERSON_H_#include <iostream>#include <stdio.h>#include <tchar.h>#include <string>using namespace std;class Person{private:static const int Person::LIMIT = 25;string lname;char fname[LIMIT];public:Person(){ lname = ""; fname[0] = '\0'; }Person(const string &ln, const char *fn = "Heyyou");void Show()const;void FormalShow()const;};#endif//person.cpp#include "person.h"Person::Person(const string &ln, const char *fn){lname = ln;strncpy_s(fname, fn, LIMIT);fname[LIMIT] = '\0';}void Person::Show()const{cout << fname << " " << lname;}void Person::FormalShow()const{cout << lname << ", " << fname; }//usePerson.cpp#include "person.h"int main(){Person one;Person two("Smythecraft");Person three("Dimwiddy", "Sam");one.Show();cout << endl;one.FormalShow();cout << endl;two.Show();cout << endl;two.FormalShow();cout << endl;three.Show();cout << endl;three.FormalShow();cout << endl;cin.get();return 0;}3、//golf.h#ifndef GOLF_H_#define GOLF_H_#include <iostream>#include <string>using namespace std;class golf{private:static const int Len = 40;char fullname[Len];int handicap;public:golf();golf(const char *name, int hc = 0);golf(golf &g);~golf();void handicapf(int hc);void show()const;};#endif//golf.cpp#include "golf.h"golf::golf(){}golf::golf(const char *name, int hc){strncpy_s(fullname, name, Len);fullname[Len] = '\0';handicap = hc;}golf::golf(golf &g){strncpy_s(this->fullname, g.fullname, Len);this->handicap = g.handicap;}golf::~golf(){}void golf::handicapf( int hc){handicap = hc;}void golf::show()const{cout << fullname << ", " << handicap << endl; }//main.cpp#include "golf.h"int main(){char name[40] = "\0";int no;cout << "Enter a name: ";cin.getline(name, 40);cout << "Enter a level: ";cin >> no;golf ann(name, no);ann.show();golf andy = golf(ann);andy.show();cin.get();cin.get();return 0;}4、//Sales.h#ifndef SALE_H_#define SALE_H_#include <iostream>#include <string>using namespace std;namespace SALES{class Sales{private:static const int QUARTERS = 4;double sales[QUARTERS];double average;double max;double min;public:Sales();Sales(const double *ar);Sales(Sales &s);~Sales();void showSales()const;};}#endif//Sales.cpp#include "Sales.h"using namespace SALES;Sales::Sales(){sales[QUARTERS] = '\0';average = 0.0;max = 0.0;min = 0.0;}Sales::Sales(const double *ar){double sum=0.0;for (int i = 0; i < QUARTERS; i++){sales[i] = ar[i];sum += sales[i];}average = sum / QUARTERS;max = sales[0];for (int i = 0; i < QUARTERS-1; i++){if (sales[i] < sales[i + 1])max = sales[i + 1];}min = sales[0];for (int i = 0; i < QUARTERS-1; i++){if (sales[i] > sales[i + 1])min = sales[i + 1];}}Sales::Sales(Sales &s){for (int i = 0; i < QUARTERS; i++)this->sales[i] = s.sales[i];this->average = s.average;this->max = s.max;this->min = s.min;}Sales::~Sales(){}void Sales::showSales()const{cout << "The sales number is \n";for (int i = 0; i < QUARTERS; i++){cout << sales[i] << " ";}cout << endl;cout << "The sales average is " << average << endl;cout << "The sales max is " << max << endl;cout << "The sales min is " << min << endl;}//main.cpp#include "Sales.h"using namespace SALES;int main(){double nums[4];cout << "Please enter four numbers: \n";for (int i = 0; i < 4; i++)cin >> nums[i];Sales sn(nums);sn.showSales();Sales sn1(sn);sn1.showSales();cin.get();cin.get();return 0;}5、//stack.h#ifndef STACK_H_#define STACK_H_#include <iostream>#include <string>#include <stdio.h>using namespace std;struct customer{char fullname[35];double payment;};typedef struct customer Item;class Stack{private:enum{ MAX = 10 };Item items[MAX];double sum;int top;public:Stack();~Stack();bool isempty()const;bool isfull()const;bool push(const Item &item);bool pop(Item &item);};#endif#include "stack.h"Stack::Stack(){top = 0;sum = 0.0;}Stack::~Stack(){}bool Stack::isempty()const{return top == 0;}bool Stack::isfull()const{return top == MAX;}bool Stack::push(const Item &item) {if (top < MAX){items[top++] = item;return true;}elsereturn false;}bool Stack::pop(Item &item){if (top > 0){item = items[--top];sum += item.payment;cout << sum << endl;return true;}return false;}//main.cpp#include "stack.h"int main(){Stack st;char ch;Item cs;cout << "Please enter A to add a purchase order,\n"<< "P to process a PO, or Q to quit.\n";while (cin >> ch && toupper(ch) != 'Q'){while (cin.get() != '\n')continue;if (!isalpha(ch)){cout << '\a';continue;}switch (ch){case 'A':case 'a':cout << "Enter a PO number to add: ";cin >> cs.fullname;cin >> cs.payment;if (st.isfull())cout << "stack already full\n";elsest.push(cs);break;case 'P':case 'p':if (st.isempty())cout << "stack already empty\n";else{st.pop(cs);cout << "PO #" << cs.fullname << "popped\n";}break;}cout << "Please enter A to add a purchase order,\n"<< "P to process a PO, or Q to quit.\n";}cout << "Bye\n";cin.get();cin.get();return 0;}6、//Move.h#ifndef MOVE_H_#define MOVE_H_#include <stdio.h>#include <iostream>#include <string>using namespace std;class Move{private:double x;double y;public:Move(double a = 0, double b = 0);void showmove()const;Move add(const Move &m)const;void reset(double a = 0, double b = 0);};#endif//Move.cpp#include "Move.h"Move::Move(double a, double b){x = a;y = b;}void Move::showmove()const{cout << "x = " << x << endl;cout << "y = " << y << endl;}Move Move::add(const Move &m)const {Move xy_add;xy_add.x = m.x + this->x;xy_add.y = m.y + this->y;return xy_add;}void Move::reset(double a, double b) {x = a;y = b;}//main.cpp#include "Move.h"int main(){Move xy0(1, 1);xy0.showmove();Move xy1;xy1 = Move(2, 2);xy1.showmove();xy1 = xy1.add(xy0);xy1.showmove();xy1.reset(2.5, 2.5);xy1.showmove();cin.get();return 0;}7、//plorg.h#ifndef PLORG_H_#define PLORG_H_#include <iostream>#include <string>#include <stdio.h>using namespace std;class plorg{private:static const int len = 19;char fullname[len];int CI;public:plorg(const char *name = "Plorga", int ci = 50);~plorg();void p_fix(int ci);void show()const;};#endif//plorg.cpp#include "plorg.h"plorg::plorg(const char *name, int ci){strncpy_s(fullname, name, len);CI = ci;}plorg::~plorg(){}void plorg::p_fix(int ci){CI = ci;}void plorg::show()const{cout << fullname << ", " << CI << endl; }//main.cpp#include "plorg.h"int main(){plorg pl;pl.show();pl.p_fix(32);pl.show();plorg pll("Plorgb", 27);pll.show();pll.p_fix(32);pll.show();cin.get();return 0;}8、//list.h#ifndef LIST_H_#define LIST_H_#include <iostream>#include <string>#include <stdio.h>using namespace std;typedef unsigned long Item;class List{private:enum { MAX = 10 };Item items[MAX];int head;int rear;public:List();bool isempty()const;bool isfull()const;bool add(const Item &item);bool cut(Item &item);void show()const;void visit(void(*pf)(Item &)); };#endif//list.cpp#include "list.h"List::List(){head = 0;rear = 0;}bool List::isempty()const{return rear == head;}bool List::isfull()const{return rear - head == MAX; }bool List::add(const Item &item) {if (rear < MAX){items[rear++] = item;return true;}elsereturn false;}bool List::cut(Item &item){if (rear < MAX){item = items[--rear];return true;}elsereturn false;}void List::show()const{for (int i = head; i < rear; i++)cout << items[i] << ", ";cout << endl;}void List::visit(void(*pf)(Item &)){for (int i = 0; i < rear; i++)(*pf)(items[i]);}//main.cpp#include "list.h"void show_s(Item & item);int main(){List st;char ch;unsigned long po;unsigned long *p = &po;cout << "Please enter A to add a purchase order,\n"<< "P to process a PO, or Q to quit.\n";while (cin >> ch && toupper(ch) != 'Q'){while (cin.get() != '\n')continue;if (!isalpha(ch)){cout << '\a';continue;}switch (ch){case 'A':case 'a':cout << "Enter a PO number to add: ";cin >> po;if (st.isfull())cout << "stack already full\n";elsest.add(po);break;case 'P':case 'p':if (st.isempty())cout << "stack already empty\n";else{st.cut(po);cout << "PO #" << po << "popped\n";}break;case 'V':case 'v':st.visit(show_s);}cout << "Please enter A to add a purchase order,\n"<< "P to process a PO, or Q to quit.\n";}st.show();cout << "Bye\n";cin.get();cin.get();return 0;}void show_s(Item &item){item += 100;cout << item << endl;}。

C Primer Plus第6版中文版勘误表

注意：下面的勘误中，红色字体为修改后的文字，提请各位读者注意。

1.第6页，” 1.6语言标准”中的第3行，将1987年修改为1978年。

2.第22页，” 2. main（）函数”中的第1行，int main (void)后面的分号（;）删除。

3.第24页，“5. 声明”的第10行，也就是一个变量、函数或其他实体的名称。

4.第27页，图2.3中，下划线应该只包含括号中的内容；第2段的第4行，而不是存储在源代码中的指令。

5.第30页，“2.5.4 打印多个值”的第4行，双引号后面的第1个变量。

6.第34页，“2.7.3 程序状态”第2段的第4行，要尽量忠实于代码来模拟。

7.第35页，“2.10 本章小结”第2段的第1句，声明语句为变量指定变量名，并标识该变量中存储的数据类型；本页倒数第2行，即检查程序每执行一步后所有变量的值。

8.第37页，“2.12 编程练习”中第1题，把你的名和姓打印在一行……把你的名和姓分别打印在两行……把你的名和姓打印在一行……把示例的内容换成你的名字。

9.第40页，第1行，用于把英磅常衡盎司转换为……10.第44页，“3.4 C语言基本数据类型”的第1句，本节将详细介绍C语言的基本属性类型……11.第46页，“5. 八进制和十六进制”的第4句，十六进制数3的二进制数是0011，十六进制数5的二进制数是0101；“6.显示八进制和十六进制”的第1句，既可以使用也可以显示不同进制的数；将“回忆一下……程序在执行完毕后不会立即关闭执行窗口”放到一个括号里。

12.第47页，“2.使用多种整数类型的原因”第3句，过去的一台运行Windows 3.x的机器上。

13.第53页，图 3.5下面的第4行“上面最后一个例子（printf(“Gramps sez, \”a \\ is abackslash.\”\n”);）”14.第56页，正文的第2行和第4行应该分别为printf(“me32 = %“ “d” “\n”, me32); printf(“me32 = %d\n”, me32);15.第61页，“无符号类型”的最后1句，相当于unsigned int（即两者之间添加一个空格）。

《 C++ Primer Plus (第 6 版)中文版》勘误表

================================================================= *** 《C++ Primer Plus （第6 版）中文版》勘误表***作者：yangyang.gnu联系：yangyang.gnu@时间：2013-9-24================================================================= P268错误: free_throws * pt;修正: free_throws * pt = new free_throws;P291错误：在这两个模板函数中，recycle<blot *>(blot *) 被认为是更具体的修正：在这两个模板函数中，recycle<blot>(blot *) 被认为是更具体的P337错误: staticconst LIMIT = 25;修正: staticconst unsigned LIMIT = 25;P386错误：t4 = t1 + t2 + t3 先转换为t4 = t1.operator+(t2 + t3) 再转换为t4 =t1.operator+(t2.operator+(t3))修正：t4 = t1 + t2 + t3 先转换为t4 = t1.operator+(t2) + t3 再转换为t4 =t1.operator+(t2).operator+(t3)P387错误：.*：成员指针运算符修正：->：成员指针运算符P428错误：String boston("Boston");修正：StringBadboston("Boston");P431错误：然后程序使用重载运算符>>列出了这些对象修正：然后程序使用重载运算符<<列出了这些对象P439错误：最简单的办法是使用标准的trcmp()函数修正：最简单的办法是使用标准的strcmp()函数P440错误：means.operator[][0] = 'r';修正：means.operator[](0) = 'r';P439错误：因为内置的>运算符返回的是一个布尔值修正：因为内置的<运算符返回的是一个布尔值P478错误：Cow(const Cow c& );修正：Cow(const Cow & c);P478错误：提供一个Stringlow()成员函数修正：提供一个stringlow()成员函数错误：提供String()成员函数修正：提供stringup()成员函数P505错误: 这意味着，即使基类不需要显式析构函数提供服务，也不应该依赖于默认构造函数修正: 这意味着，即使基类不需要显式析构函数提供服务，也不应该依赖于默认构造析构P508错误：半长轴修正：长半轴P510错误：void Move(intnx, ny) = 0修正：virtual void Move(intnx, ny) = 0P525错误：Star::Star double() {...}Star::Star const char * () {...}修正：Star::operator double() {...}Star::operator const char * () {...}P529错误：派生类的有元函数修正：派生类的友元函数P532错误：Cd(char * s1, char * s2, int n, double x);修正：Cd(const char * s1, const char * s2, int n, double x);P532错误：派生出一个Classic 类，并添加一组char 成员修正：派生出一个Classic 类，并添加一个char 数组成员P532错误：copy.Report()修正：copy.Report();P535错误：所有元素度被初始化为指定值的数组修正：所有元素都被初始化为指定值的数组P544错误：例如，在类声明中提出可以使用average()函数。

C++-primer-plus(第6版)中文版-编程练习答案(word版)

第二章：开始学习C++//ex2.1--display your name and a ddress#include<iostream>int main(void){using namespace std;cout<<"My name is liao chunguang and I live in hunan chenzhou.\n〞；}the furlong units to yard uints-把浪单位换位码单位#include<iostream>double fur2yd(double);int main(){using namespace std;cout<<"enter the distance measured by furlong u nits:";double fur;cin>>fur;cout<<"convert the furlong to y ard"<<endl;double yd;yd=fur2yd(fur);cout<<fur<<" furlong is "<<yd<<" yard"<<endl;return 0;}double fur2yd(double t){return 220*t;}每个函数都被调用两次#include<iostream>void mice();void see();using namespace std;int main(){mice();mice();see();see();return 0;}void mice(){cout<<"three blind mice"<<endl;}void see(){cout<<"see how they run"<<endl;}#include<iostream>int main(){using namespace std;cout<<"Enter your age:";int age;cin>>age;int month;month=age*12;cout<<age<<" years is "<<month<<" months"<<endl;return 0;}the Celsius valve to Fahrenheit value#include<iostream>double C2F(double);int main(){using namespace std;cout<<"please enter a Celsius value:";double C;cin>>C;double F;F=C2F(C);cout<<C<<" degrees Celsius is "<<F<<" degrees Fahrenheit."<<endl; return 0;}double C2F(double t){return 1.8*t+32;}the light years valve to astronomical units--把光年转换为天文单位#include<iostream>double convert(double);//函数原型int main(){using namespace std;cout<<"Enter the number of light y ears:";double light_years;cin>>light_years;double astro_units;astro_units=convert(light_years);cout<<light_years<<" light_years = "<<astro_units<<" astronomical units."<<endl; return 0;}double convert(double t){return 63240*t;//1 光年=63240 天文单位}显示用户输入的小时数和分钟数#include<iostream>void show();main(){using namespace std;show();return 0;}void show(){using namespace std;int h,m;cout<<"enter the number of hours:";cin>>h;cout<<"enter the number of minutes:";cin>>m;cout<<"Time:"<<h<<":"<<m<<endl;}第三章：处理数据//ex3.1—将身高用英尺(feet)和英寸(inch)表示#include<iostream>const int inch_per_feet=12;// const 常量--1feet=12inches--1 英尺=12 英寸int main(){using namespace std;cout<<"please enter your height in inches:\b\b\b";// \b 表示为退格字符int ht_inch;cin>>ht_inch;int ht_feet=ht_inch/inch_per_feet;//取商int rm_inch=ht_inch%inch_per_feet;//取余cout<<"your height is "<<ht_feet<<" feet,and "<<rm_inch<<" inches\n";return 0;}计算相应的body mass index〔体重指数〕#include<iostream>const int inch_per_feet=12;const double meter_per_inch=0.0254;const double pound_per_kilogram=2.2;int main(){using namespace std;cout<<"Please enter your height:"<<endl;cout<<"First,enter your height of feet part〔输入你身高的英尺局部〕:_\b";int ht_feet;cin>>ht_feet;cout<<"Second,enter your height of inch p art〔输入你身高的英寸局部〕:_\b";int ht_inch;cin>>ht_inch;cout<<"Now,please enter your weight in pound:\b\b\b";double wt_pound;cin>>wt_pound;int inch;inch=ht_feet*inch_per_feet+ht_inch;double ht_meter;ht_meter=inch*meter_per_inch;double wt_kilogram;wt_kilogram=wt_pound/pound_per_kilogram;cout<<endl;cout<<"Your pensonal body information as follows:"<<endl; cout<<"身高:"<<inch<<"(英尺inch)\n"<<"身高:"<<ht_meter<<"(米meter)\n"<<"体重:"<<wt_kilogram<<"(千克kilogram)\n";double BMI;BMI=wt_kilogram/(ht_meter*ht_meter);cout<<"your Body Mass Index(体重指数) is "<<BMI<<endl;return 0;}以度，分，秒输入，以度输出#include<iostream>const int minutes_per_degree=60;const int seconds_per_minute=60;int main(){using namespace std;cout<<"Enter a latitude in degrees,minutes,and s econds:\n";cout<<"First,enter the d egrees:";int degree;cin>>degree;cout<<"Next,enter the minutes of arc:";int minute;cin>>minute;cout<<"Fianlly,enter the seconds of arc:";int second;cin>>second;double show_in_degree;show_in_degree=(double)degree+(double)minute/minutes_per_degree+(double)second/mi nutes_per_degree/seconds_per_minute;cout<<degree<<" degrees,"<<minute<<" minutes,"<<second<<"seconds ="<<show_in_degree<<" degrees\n";return 0;}#include<iostream>const int hours_per_day=24;const int minutes_per_hour=60;const int seconds_per_minute=60;int main(){using namespace std;cout<<"Enter the number of seconds:";long seconds;cin>>seconds;int Day,Hour,Minute,Second;Day=seconds/seconds_per_minute/minutes_per_hour/hours_per_day;Hour=seconds/seconds_per_minute/minutes_per_hour%hours_per_day;Minute=seconds/seconds_per_minute%minutes_per_hour;Second=seconds%seconds_per_minute;cout<<seconds<<"seconds = "<<Day<<" days,"<<Hour<<" hours,"<<Minute<<" minutes,"<<Second<<" seconds\n";return 0;}#include<iostream>int main(){using namespace std;cout<<"Enter the world population:";long long world_population;cin>>world_population;cout<<"Enter the population of the US:";long long US_population; cin>>US_population;double percentage;percentage=(double)US_population/world_population*100;cout<<"The population of the US is "<<percentage<<"% of the world population.\n"; return 0;}//ex3.6 汽车耗油量-美国(mpg)or 欧洲风格(L/100Km)#include<iostream>int main(){using namespace std;cout<<"Enter the miles of distance you have driven:";double m_distance;cin>>m_distance;cout<<"Enter the gallons of gasoline you have used:";double m_gasoline;cin>>m_gasoline;cout<<"Your car can run "<<m_distance/m_gasoline<<" miles per gallon\n";cout<<"Computing by European style:\n";cout<<"Enter the distance in k ilometers:";double k_distance;cin>>k_distance;cout<<"Enter the petrol in l iters:";double k_gasoline;cin>>k_gasoline;cout<<"In European style:"<<"your can used "<<100*k_gasoline/k_distance<<" liters of petrol per 100 kilometers\n";return 0;}//ex3.7 automobile gasoline consumption-耗油量--欧洲风格(L/100Km)转换成美国风格(mpg) #include<iostream>int main(){using namespace std;cout<<"Enter the automobile gasoline consumption figure in\n"<<"European style(liters per 100 k ilometers):";double Euro_style;cin>>Euro_style;cout<<"Converts to U.S. style(miles per gallon):"<<endl;cout<<Euro_style<<" L/100Km = "<<62.14*3.875/Euro_style<<" mpg\n";return 0;}// Note that 100 kilometers is 62.14 miles, and 1 gallon is 3.875 liters.//Thus, 19 mpg is about L/100Km, and 27 mpg is about L/100Km. Enter theautomobile gasoline consumption figure inEuropean style(liters per 100 Converts to U.S.style(miles per gallon):mpgPress any key to continue// ex3.7 automobile gasoline consumption-耗油量--美国风格(mpg)转换成欧洲风格(L/100Km) #include<iostream>int main(){using namespace std;cout<<"Enter the automobile gasoline consumption figure in\n"<<"U.S. style(miles per gallon):";double US_style;cin>>US_style;cout<<"Converts to European style(miles per gallon):"<<endl;cout<<US_style<<" mpg = "<< 62.14*3.875/US_style<<"L/100Km\n";return 0;}// Enter the automobile gasoline consumption figure inU.S. style(miles per gallon):19Converts to European style(miles per gallon):19 mpg =Press any key to continue第四章复合类型//ex4.1 display the information of student#include<iostream>const int Asize=20;using namespace std;struct student//定义结构描述{char firstname[Asize];char lastname[Asize];char grade;int age;};void display(student);//函数原型放在结构描述后int main(){cout<<"what is your first name?"<<endl;student lcg;//创立结构变量〔结构数据对象〕cin.getline(lcg.firstname,Asize);cout<<"what is your last name?"<<endl;cin.getline(stname,Asize);cout<<"what letter grade do you d eserve?"<<endl;cin>>lcg.grade;cout<<"what is your age?"<<endl;cin>>lcg.age;display(lcg);return 0;}void display(student name){cout<<"Name: "<<name.firstname<<","<<stname<<endl;cout<<"Grade:"<<char(name.grade+1)<<endl;cout<<"Age:"<<name.age<<endl;}use the string-class instead of char-array#include<iostream>#include<string>int main(){using namespace std;string name,dessert;cout<<"Enter your name: \n";getline(cin,name);cout<<"Enter your favorite dessert: \n";getline(cin,dessert);cout<<"I have some delicious "<<dessert;cout<<" for you, "<<name<<".\n";return 0;}//有时候会遇到需要按下两次回车键才能正确的显示结果，这是的一个BUG，更改如下：else if (_Tr::eq((_E)_C, _D)){_Chg = true;_I.rdbuf()->sbumpc();//修改后的break; }输入其名和姓，并组合显示#include<iostream>#include<cstring>const int Asize=20;int main(){using namespace std;char fname[Asize];char lname[Asize];char fullname[2*Asize+1];cout<<"Enter your first name:";//输入名字，存储在fname[]数组中cin.getline(fname,Asize);cout<<"Enter your last name:";//输入姓，存储在lname[]数组中cin.getline(lname,Asize);strncpy(fullname,lname,Asize);//把姓lname 复制到fullname 空数组中strcat(fullname,", ");//把“，〞附加到上述fullname 尾部strncat(fullname,fname,Asize);//把fname 名字附加到上述fullname 尾部fullname[2*Asize]='\0';//为防止字符型数组溢出，在数组结尾添加结束符cout<<"Here's the information in a single string:"<<fullname<<endl;//显示组合结果return 0;}#define _CRT_SECURE_NO_WARNINGS#include <iostream>#include <cstring>const int Asize = 20;int main(){using namespace std;char firstname[Asize];char lastname[50];cout << "Enter your first name: ";cin.getline(firstname,Asize);cout << "Enter your last name: ";cin.getline(lastname,50);strcat(lastname,", ");strncat(lastname,firstname,Asize);cout << "Here's the information in a single string: "<< lastname <<endl;return 0;}//ex4.4 使用string 对象存储、显示组合结果#include<iostream>#include<string>int main(){using namespace std;string fname,lname,attach,fullname;cout<<"Enter your first name:";getline(cin,fname);//note:将一行输入读取到string 类对象中使用的是getline(cin,str)//它没有使用句点表示法，所以不是类方法cout<<"Enter your last name:";getline(cin,lname);attach=", ";fullname=lname+attach+fname;cout<<"Here's the information in a single string:"<<fullname<<endl;return 0;}//ex4.5 declare a struct and initialize it 声明结果并创立一个变量#include<iostream>const int Asize=20;struct CandyBar{char brand[Asize];double weight;int calory;int main(){using namespace std;CandyBar snack={"Mocha Munch",2.3,350};cout<<"Here's the information of snack:\n";cout<<"brand:"<<snack.brand<<endl;cout<<"weight:"<<snack.weight<<endl;cout<<"calory:"<<snack.calory<<endl;return 0;}结构数组的声明及初始化#include<iostream>const int Asize=20;struct CandyBar{char brand[Asize];double weight;int calory;};int main(){using namespace std;CandyBar snack[3]={{"Mocha Munch",2.3,350},{"XuFuJi",1.1,300},{"Alps",0.4,100}};for(int i=0;i<3;i++)//利用for 循环来显示snack 变量的内容{cout<<snack[i].brand<<endl<<snack[i].weight<<endl<<snack[i].calory<<endl<<endl;}return 0;}//ex4.7 pizza 披萨饼#include<iostream>#include<string>const int Size=20;struct pizza//声明结构char company[Size];double diameter;double weight;};int main(){using namespace std;pizza pie;//创立一个名为pie 的结构变量cout<<"What's the name of pizza company:";cin.getline(pie pany,Size);cout<<"What's the diameter of pizza:";cin>>pie.diameter;cout<<"What's the weight of pizza:";cin>>pie.weight; cout<<"company:"<<piepany<<endl;cout<<"diameter:"<<pie.diameter<<"inches"<<endl;cout<<"weight:"<<pie.weight<<"ounches"<<endl;return 0;}pizza pie 披萨饼使用new 创立动态结构#include<iostream>#include<string>const int Size=20;struct pizza//声明结构{char company[Size];double diameter;double weight;};int main(){using namespace std;pizza *pie=new pizza;//使用new 创立动态结构cout<<"What's the diameter of pizza:";cin>>pie->diameter; cin.get();//读取下一个字符cout<<"What's the name of pizza company:";cin.get(pie->company,Size);cout<<"What's the weight of pizza:";cin>>pie->weight;cout<<"diameter:"<<pie->diameter<<" inches"<<endl;cout<<"company:"<<pie->company<<endl;cout<<"weight:"<<pie->weight<<" ounches"<<endl;delete pie;//delete 释放内存return 0;}//ex.4.9 使用new 动态分配数组—方法1#include<iostream>#include<string>using namespace std;struct CandyBar{string brand;double weight;int calory;};int main(){CandyBar *snack= new CandyBar[3]; snack[0].brand="A";//单个初始化由new 动态分配的内存snack[0].weight=1.1;snack[0].calory=200;snack[1].brand="B";snack[1].weight=2.2;snack[1].calory=400;snack[2].brand="C";snack[2].weight=4.4;snack[2].calory=500;for(int i=0;i<3;i++){cout << " brand: " << snack[i].brand << endl;cout << " weight: " << snack[i].weight << e ndl;cout << " calorie: " << snack[i].calory << endl<<endl;}delete [] snack;return 0;}//ex.4.10 数组—方法1#include <iostream>int main(){using namespace std;const int Size = 3;int success[Size];cout<<"Enter your success of the three times 40 meters running:\n";cin >> success[0]>>success[1]>>success[2];cout<<"success1:"<<success[0]<<endl;cout<<"success2:"<<success[1]<<endl;cout<<"success3:"<<success[2]<<endl;double average=(success[0]+success[1]+success[2])/3;cout<<"average:"<<average<<endl;return 0;}//ex.4.10 array—方法2#include <iostream>#include <array>int main(){using namespace std;array<double,4>ad={0};cout<<"Enter your success of the three times 40 meters running:\n";cin >> ad[0]>>ad[1]>>ad[2];cout<<"success1:"<<ad[0]<<endl;cout<<"success2:"<<ad[1]<<endl;cout<<"success3:"<<ad[2]<<endl;ad[3]=(ad[0]+ad[1]+ad[2])/3;cout<<"average:"<<ad[3]<<endl;return 0;}第五章循环和关系表达式#include <iostream>int main(){using namespace std;cout<<"Please enter two integers: ";int num1,num2;cin>>num1>>num2;int sum=0;for(int temp=num1;temp<=num2;++temp)//or temp++sum+=temp;cout<<"The sum from "<<num1<<" to "<<num2<<" is "<<sum<<endl;return 0;}#include <iostream>#include<array>int main(){using namespace std;array<long double,101>ad={0};ad[1]=ad[0]=1L;for(int i=2;i<101;i++)ad[i]=i*ad[i-1];for(int i=0;i<101;i++)cout<<i<<"! = "<<ad[i]<<endl;return 0;}#include <iostream>#include <array>using namespace std;int main(){array<long double, 101> multiply;multiply[0] = multiply[1] = 1LL;for (int i = 2; i <= 100; i++)multiply[i] = multiply[i-1]*i;cout << multiply[100];return 0;}#include <iostream>int main(){using namespace std;cout<<"Please enter an integer: ";int sum=0,num;while((cin>>num)&&num!=0){sum+=num;cout<<"So far, the sum is "<<sum<<endl;cout<<"Please enter an integer: ";}return 0;}#include <iostream>int main(){using namespace std;double sum1,sum2;sum1=sum2=0.0;int year=0;while(sum2<=sum1){++year;sum1+=10;sum2=(100+sum2)*0.05+sum2;}cout<<"经过"<<year<<"年后，Cleo 的投资价值才能超过Daphne 的投资价值。

数据结构教材勘误表

《数据结构》勘误表页号 P15 位置图 2-2 原内容
a1 a2 … ai-1 ai … an a1 a2 … ai-1 e ai … an
表的长度增加
修改后内容
a1 a2 … ai-1 ai … an a1 a2 … ai-1 e ai
备注
… an
表的长度增加
P21 P33 P37 P43 P46
for(col=0;col<A.nu ;++col) 0≤i<n，0≤j<m
p 1
A[i][k ] B[k ][ j ]
k 1
p
A[i][k ] B[k ][ j ]
k 0
108 108 108 117 119 123 132
15 18 倒数第 5 行第一句文字倒数第 4 行图 6-13（c）算法 6.6, 算法 6.13
……仍为 m 阶 B-树 //在 m 阶 B-树*t 上结点…… ……信息，以及指向…… ……解决以下两个问题： ……不同的符号在各位上…… ……位作为哈希地址。 ……稳定性：对任意…… ……进行排序，若相同…… ……将第 i 个记录后移： r[i+1]=r[i] 插入排序……的算法是简单…… for(int j=i-1;j>=high+1;--j) 记录后移 L.key[j+1]=L.key[j]; L.key[high+1]=L.key[0]; 选择排序的思想是每一…… ……因此，它的空间复杂度为 O(1)。 Step1:……中的元素建大顶堆不超过式（9-10）： ……，即 //
（ki1,ki2,……，kid）<……
P243 P243 P244 P246 P247 P248 P257 P257 P258 P258 P261

(完整word版)c++primerplus中文版第六版源代码

(完整word版)c++primerplus中文版第六版源代码C++ primer plus 中文版第六版源代码第二章到第四章,后续继续更新………第二章1：#include<iostream>void main(）{using namespace std；int carrots;carrots=25;cout<<”I have ";cout〈〈carrots;cout〈〈"carrots.”；cout<〈endl;carrots=carrots-1;cout〈〈"Crunch，crunch。

Now I have ”<〈carrots<<” carrots"<〈endl；}2：#include〈iostream>(完整word版)c++primerplus中文版第六版源代码int stonetolb(int）；int main(）｛using namespace std；int stone；cout<〈”Enter the weight in stone: ”;cin>〉stone；int pounds=stonetolb（stone);cout〈〈stone<〈” stone= ";cout〈<pounds〈〈" pounds."<<endl;return 0；｝int stonetolb(int sts){return 14*sts;｝3：#include〈iostream>void main（){using namespace std；int carrots;carrots=25；cout<<"How many carrots do you have?”<<endl；cin>〉carrots；cout<<”Here are two more。

C++-primer-plus(第6版)中文版编程练习答案第13章

//cdplayer.h#ifndef CDPLAYER_H_#define CDPLAYER_H_#include <iostream>#include <string>using namespace std;class Cd{private:char performers[50];char label[20];int selections;double playtime;public:Cd(char *s1, char *s2, int n, double x);Cd(const Cd &d);Cd(){}virtual ~Cd();virtual void Report()const;Cd &operator=(const Cd &d);};class Classic :public Cd{private:char main_music[50];public:Classic(){}Classic(char *m, char *s1, char *s2, int n, double x);Classic(char *m, const Cd &c);~Classic();Classic &operator=(const Classic &c);virtual void Report()const;};#endif//cdplayer.cpp#include "cdplayer.h"Cd::Cd(char *s1, char *s2, int n, double x)strcpy_s(performers, strlen(s1) + 1, s1);strcpy_s(label, strlen(s2) + 1, s2);selections = n;playtime = x;}Cd::Cd(const Cd &d){strcpy_s(performers, 50, d.performers);strcpy_s(label, 20, bel);selections = d.selections;playtime = d.playtime;}Cd::~Cd(){}void Cd::Report()const{cout << "Performers: " << performers << endl;cout << "Label: " << label << endl;cout << "Selections: " << selections << endl;cout << "Playtime: " << playtime << endl;}Cd &Cd::operator=(const Cd &d){if (this == &d)return *this;strcpy_s(performers, 50, d.performers);strcpy_s(label, 20, bel);selections = d.selections;playtime = d.playtime;return *this;}Classic::Classic(char *m, char *s1, char *s2, int n, double x) :Cd(s1, s2, n, x) {strcpy_s(main_music, strlen(m) + 1, m);}Classic::Classic(char *m, const Cd &c) : Cd(c){strcpy_s(main_music, strlen(m) + 1, m);}Classic::~Classic(){}Classic &Classic::operator=(const Classic &c){if (this == &c)return *this;Cd::operator=(c);strcpy_s(main_music, 50, c.main_music);return *this;}void Classic::Report()const{Cd::Report();cout << "Main Music: " << main_music << endl;}//main.cpp#include "cdplayer.h"void Bravo(const Cd &disk);int main(){Cd c1("Beatles", "Capito", 14, 35.5);Classic c2 = Classic("Piano Sonata in B flat, Fantasia in C", "Alfred Brendel", "Philips", 2, 57.17);Cd *pcd = &c1;cout << "Using object directly:\n";c1.Report();c2.Report();cout << "Using type cd * pointer to objects:\n";pcd->Report();pcd = &c2;pcd->Report();cout << "Calling a function with a Cd reference argument:\n";Bravo(c1);Bravo(c2);cout << "Testing assignment: ";Classic copy;copy = c2;copy.Report();system("pause");return 0;}void Bravo(const Cd &disk){disk.Report();}2、//cdplayer.h#ifndef CDPLAYER_H_#define CDPLAYER_H_#include <iostream>#include <string>using namespace std;class Cd{private:char *performers;char *label;int selections;double playtime;public:Cd(char *s1, char *s2, int n, double x);Cd(const Cd &d);Cd(){}virtual ~Cd();virtual void Report()const;Cd &operator=(const Cd &d);};class Classic :public Cd{private:char *main_music;public:Classic(){}Classic(char *m, char *s1, char *s2, int n, double x);Classic(char *m, const Cd &c);~Classic();Classic &operator=(const Classic &c);virtual void Report()const;};#endif//cdplayer.cpp#include "cdplayer.h"Cd::Cd(char *s1, char *s2, int n, double x){performers = new char[strlen(s1) + 1];label = new char[strlen(s2) + 1];strcpy_s(performers, strlen(s1) + 1, s1);strcpy_s(label, strlen(s2) + 1, s2);selections = n;playtime = x;}Cd::Cd(const Cd &d){performers = new char[strlen(d.performers) + 1];label = new char[strlen(bel) + 1];strcpy_s(performers, strlen(d.performers) + 1, d.performers);strcpy_s(label, strlen(bel) + 1, bel);selections = d.selections;playtime = d.playtime;}Cd::~Cd(){delete[]performers;delete[]label;}void Cd::Report()const{cout << "Performers: " << performers << endl;cout << "Label: " << label << endl;cout << "Selections: " << selections << endl;cout << "Playtime: " << playtime << endl;}Cd &Cd::operator=(const Cd &d){if (this == &d)return *this;delete[]performers;delete[]label;performers = new char[strlen(d.performers) + 1];label = new char[strlen(bel) + 1];strcpy_s(performers, strlen(d.performers) + 1, d.performers);strcpy_s(label, strlen(bel) + 1, bel);selections = d.selections;playtime = d.playtime;return *this;}Classic::Classic(char *m, char *s1, char *s2, int n, double x) :Cd(s1, s2, n, x) {main_music = new char[strlen(m) + 1];strcpy_s(main_music, strlen(m) + 1, m);}Classic::Classic(char *m, const Cd &c) : Cd(c){main_music = new char[strlen(m) + 1];strcpy_s(main_music, strlen(m) + 1, m);}Classic::~Classic(){delete[]main_music;}Classic &Classic::operator=(const Classic &c){if (this == &c)return *this;Cd::operator=(c);delete[]main_music;main_music = new char[strlen(c.main_music) + 1];strcpy_s(main_music, strlen(c.main_music) + 1, c.main_music);return *this;}void Classic::Report()const{Cd::Report();cout << "Main Music: " << main_music << endl;}//main.cpp#include "cdplayer.h"void Bravo(const Cd &disk);int main(){Cd c1("Beatles", "Capito", 14, 35.5);Classic c2 = Classic("Piano Sonata in B flat, Fantasia in C", "Alfred Brendel", "Philips", 2, 57.17);Cd *pcd = &c1;cout << "Using object directly:\n";c1.Report();c2.Report();cout << "Using type cd * pointer to objects:\n";pcd->Report();pcd = &c2;pcd->Report();cout << "Calling a function with a Cd reference argument:\n";Bravo(c1);Bravo(c2);cout << "Testing assignment: ";Classic copy;copy = c2;copy.Report();system("pause");return 0;}void Bravo(const Cd &disk){disk.Report();}3、//dma.h#ifndef DMA_H_#define DMA_H_#include <iostream>#include <string>using namespace std;class ABC{private:char *fullname;int level;public:ABC(const char *f = "null", int l = 0);ABC(const ABC &ab);ABC &operator=(const ABC &ab);virtual ~ABC();virtual void View() = 0;};class baseDMA :public ABC{private:char *label;int rating;public:baseDMA(const char *l = "null", int r = 0, const char *f = "null", int lv = 0);baseDMA(const baseDMA &rs);~baseDMA();baseDMA &operator=(const baseDMA &rs);virtual void View();};class lacksDMA :public ABC{private:enum{ COL_LEN = 40 };char color[COL_LEN];public:lacksDMA(const char *c = "blank", const char *f = "null", int lv = 0);lacksDMA(const char *c, const baseDMA &rs);virtual void View();};class hasDMA :public ABC{private:char *style;public:hasDMA(const char *s = "none", const char *f = "null", int lv = 0);hasDMA(const char *s, const ABC &rs);hasDMA(const hasDMA &hs);~hasDMA();hasDMA &operator=(const hasDMA &hs);virtual void View();};#endif//dma.cpp#include "dma.h"ABC::ABC(const char *f, int lv){fullname = new char[strlen(f) + 1];strcpy_s(fullname, strlen(f) + 1, f);level = lv;}ABC::ABC(const ABC &ab){fullname = new char[strlen(ab.fullname) + 1];strcpy_s(fullname, strlen(ab.fullname) + 1, ab.fullname);level = ab.level;}ABC::~ABC(){delete[]fullname;}ABC &ABC::operator=(const ABC &ab){if (this == &ab)return *this;delete[]fullname;fullname = new char[strlen(ab.fullname) + 1];strcpy_s(fullname, strlen(ab.fullname) + 1, ab.fullname);level = ab.level;return *this;void ABC::View(){cout << "Fullname: " << fullname << endl;cout << "Level: " << level << endl;}baseDMA::baseDMA(const char *l, int r, const char *f, int lv) :ABC(f, lv) {label = new char[strlen(l) + 1];strcpy_s(label, strlen(l) + 1, l);rating = r;}baseDMA::baseDMA(const baseDMA &rs) :ABC(rs){label = new char[strlen(bel) + 1];strcpy_s(label, strlen(bel) + 1, bel);rating = rs.rating;}baseDMA::~baseDMA(){delete[]label;}baseDMA &baseDMA::operator=(const baseDMA &rs){if (this == &rs)return *this;ABC::operator=(rs);delete[]label;label = new char[strlen(bel) + 1];strcpy_s(label, strlen(bel) + 1, bel);rating = rs.rating;return *this;}void baseDMA::View(){ABC::View();cout << "Label: " << label << endl;cout << "Rating: " << rating << endl;}lacksDMA::lacksDMA(const char *c, const char *f, int lv) :ABC(f, lv){strncpy_s(color, c, 39);color[39] = '\0';}lacksDMA::lacksDMA(const char *c, const baseDMA &rs) : ABC(rs) {strncpy_s(color, c, COL_LEN - 1);color[COL_LEN - 1] = '\0';}void lacksDMA::View(){ABC::View();cout << "Color: " << color << endl;}hasDMA::hasDMA(const char *s, const char *f, int lv) :ABC(f, lv) {style = new char[strlen(s) + 1];strcpy_s(style, strlen(s) + 1, s);}hasDMA::hasDMA(const char *s, const ABC &ab) :ABC(ab){style = new char[strlen(s) + 1];strcpy_s(style, strlen(s) + 1, s);}hasDMA::hasDMA(const hasDMA &hs) : ABC(hs){style = new char[strlen(hs.style) + 1];strcpy_s(style, strlen(hs.style) + 1, hs.style);}hasDMA::~hasDMA(){delete[]style;}hasDMA &hasDMA::operator=(const hasDMA &hs){if (this == &hs)return *this;ABC::operator=(hs);delete[]style;style = new char[strlen(hs.style) + 1];strcpy_s(style, strlen(hs.style) + 1, hs.style);return *this;}void hasDMA::View(){ABC::View();cout << "Style: " << style << endl;}//usedma.cpp#include "dma.h"int main(){baseDMA shirt("Portabelly", 8, "Jack", 1);lacksDMA balloon("red", "Blimpo", 4);hasDMA map("Mercator", "buffalo Keys", 5);cout << "Displaying baseDMA object:\n";shirt.View();cout << "Displaying lacksDMA object:\n";balloon.View();cout << "Displaying hasDMA object:\n";map.View();lacksDMA balloon2(balloon);cout << "Result of lacksDMA copy:\n";balloon2.View();hasDMA map2;map2 = map;cout << "Result of hasDMA assignment:\n";map2.View();system("pause");return 0;}4、//port.h#ifndef PORT_H_#define PORT_H_#include <iostream>#include <cstring>using namespace std;class Port{private:char *brand;char style[20];int bottles;public:Port(const char *br = "none", const char *st = "none", int b = 0);Port(const Port &p);virtual ~Port(){ delete[]brand; }Port &operator=(const Port &p);Port &operator+=(int b);Port &operator-=(int b);int BottleCount()const{ return bottles; }virtual void Show()const;friend ostream &operator<<(ostream &os, const Port &p);};class VintagePort :public Port{private:char *nickname;int year;public:VintagePort();VintagePort(const char *br, const char *st, int b, const char *nn, int y);VintagePort(const VintagePort &vp);~VintagePort(){ delete[]nickname; }VintagePort &operator=(const VintagePort &vp);void Show()const;friend ostream &operator<<(ostream &os, const VintagePort &vp);};#endif//port.cpp#include "port.h"Port::Port(const char *br, const char *st, int b){brand = new char[strlen(br) + 1];strcpy_s(brand, strlen(br) + 1, br);strcpy_s(style, strlen(st) + 1, st);bottles = b;}Port::Port(const Port &p){brand = new char[strlen(p.brand) + 1];strcpy_s(brand, strlen(p.brand) + 1, p.brand);strcpy_s(style, strlen(p.style) + 1, p.style);bottles = p.bottles;}Port &Port::operator=(const Port &p){if (this == &p)return *this;delete[]brand;brand = new char[strlen(p.brand) + 1];strcpy_s(brand, strlen(p.brand) + 1, p.brand);strcpy_s(style, strlen(p.style) + 1, p.style);bottles = p.bottles;return *this;}Port &Port::operator+=(int b){bottles += b;return *this;}Port &Port::operator-=(int b){bottles -= b;return *this;}void Port::Show()const{cout << "Brand: " << brand << endl;cout << "Kind: " << style << endl;cout << "Bottles: " << bottles << endl;}ostream &operator<<(ostream &os, const Port &p){os << p.brand << ", " << p.style << ", " << p.bottles;return os;}VintagePort::VintagePort(){nickname = new char[1];nickname[0] = '\0';year = 0;}VintagePort::VintagePort(const char *br, const char *st, int b, const char *nn, int y) :Port(br, st, b){nickname = new char[strlen(nn) + 1];strcpy_s(nickname, strlen(nn) + 1, nn);year = y;}VintagePort::VintagePort(const VintagePort &vp) :Port(vp){nickname = new char[strlen(vp.nickname) + 1];strcpy_s(nickname, strlen(vp.nickname) + 1, vp.nickname);year = vp.year;}VintagePort &VintagePort::operator=(const VintagePort &vp){if (this == &vp)return *this;delete[]nickname;Port::operator=(vp);nickname = new char[strlen(vp.nickname) + 1];strcpy_s(nickname, strlen(vp.nickname) + 1, vp.nickname);year = vp.year;return *this;}void VintagePort::Show()const{Port::Show();cout << "Nickname: " << nickname << endl;cout << "Year: " << year << endl;}ostream &operator<<(ostream &os, const VintagePort &vp){os << (const Port &)vp;os << ", " << vp.nickname << ", " << vp.year;return os;}//main.cpp#include "port.h"int main(){Port wine1("Gallo", "tawny", 20);VintagePort wine2("Romane Conti", "vintage", 10, "The Noble", 1876);VintagePort wine3("Merlot", "ruby", 30, "Old Velvet", 1888);cout << "Displaying Port object:\n";wine1.Show();cout << wine1 << endl;cout << "Displaying VintagePort object:\n";wine2.Show();cout << wine2 << endl;cout << "Displaying VintagePort object:\n";wine3.Show();cout << wine3 << endl;cout << "Gallo add ten bottles:\n";wine1 += 10;cout << wine1 << endl;cout << "Romane Conti add ten bottles:\n";wine2 += 10;cout << wine2 << endl;cout << "Merlot minus ten bottles:\n";wine3 -= 10;cout << wine3 << endl;Port wine4(wine2);cout << "Result of Port copy:\n";cout << wine4 << endl;VintagePort wine5;wine5 = wine3;cout << "Result of VintagePort assignment:\n";cout << wine5 << endl;system("pause");return 0;}（注：可编辑下载，若有不当之处，请指正，谢谢!）。

C语言程序设计勘误表

C语言程序设计勘误表C语言程序设计勘误表说明：红色为修改后的字符。

1、p16原文：大写字母O的二进制编码依次是：0x1f,0x24,0x42, 0x42, 0x42, 0x42, 0x24, 0x1f。

中国的“中”字的二进制编码的按照从上到下，从左到右顺序依次进行二进制编码，共需要32个字节。

前8个字节的二进制编码是：0x01,0xf0,0x01,0xf0, 0xff,0xff,0xc0,0xf3,其余部分读者可以作为练习将其写出来。

修改为：大写字母O的二进制编码依次是：0x18,0x24,0x42, 0x42, 0x42, 0x42, 0x24, 0x18。

中国的“中”字的二进制编码按照从上到下，从左到右顺序依次进行二进制编码，共需要32个字节。

前8个字节的二进制编码的十六进制表示是：0x01,0x80,0x01,0x80, 0xff,0xff,0xc1,0x83,其余部分读者可以作为练习将其写出来。

2．ASCII码下数5行原文：从0x20到0x7f共95个编码修改为：从0x20到0x7e共95个编码2、p17原文：因此它的国标码是0x5050，而它的区位码是0x3030。

修改为：因此它的国标码是0x5056，而它的区位码是0x3036。

3、p25原文：1.9 求十进制数157和-153的8位、16位原码和8位、16位补码。

修改为：1.9 求十进制数157和-153的16位原码和16位补码。

4、p36例2.4后自然段的第3行原文：'t'、'\11'、'\011'、'\x9'和'\x09'均表示水平制表符。

修改为：'\t'、'\11'、'\011'、'\x9'和'\x09'均表示水平制表符。

5、p43 例2.9原文：!(year%4) && year%400 || !(year%400)上式等价于(!(year%4) && year%100 ) || !(year%400)修改为：!(year%4) && year%400 || !(year%400)上式等价于(!(year%4) && year%100 ) || !(year%4006、p76 例3.16原文：scanf(“%s%1s”, &c1, &c2);修改为：scanf(“%s%1s”, c1, &c2);7、p81例3.27原文：printf("%f/t", atof(” 123.456asdf”));printf("%f/t", atof(”\n-qwer”));printf("%f/t", atof(”\n+qwer”));printf("%f/n", atof(”3COM”));修改为：printf("%d\t", atoi(” 123.456asdf”));printf("%d\t", atoi(” 123456.789”));printf("%d\t", atoi(”\n-qwer”));printf("%d\t", atoi(”\n+qwer”));printf("%d\n", atoi(”3COM”));例3.28原文：printf("%d/t", atoi(” 123.456asdf”));printf("%d/t", atoi(” 123456.789”));printf("%d/t", atoi(”\n-qwer”));printf("%d/t", atoi(”\n+qwer”));printf("%d/n", atoi(”3COM”));修改为：printf("%d\t", atoi(” 123.456asdf”));printf("%d\t", atoi(” 123456.789”));printf("%d\t", atoi(”\n-qwer”));printf("%d\t", atoi(”\n+qwer”));printf("%d\n", atoi(”3COM”));p82 例3.28原文：printf("%ld/t", atol(” 123.456asdf”)); printf("%ld/t", atol(” 123456.789”));printf("%ld/t", atol(”\n-qwer”));printf("%ld/t", atol(”\n+qwer”));printf("%ld/n", atol(”3COM”));修改为：printf("%ld/t", atol(” 123.456asdf”)); printf("%ld\t", atol(” 123456.789”));printf("%ld\t", atol(”\n-qwer”));printf("%ld\t", atol(”\n+qwer”));printf("%ld\n", atol(”3COM”));8、p86 例3.33原文：printf(”input a character:\n”)c = getchar();c >= ’0’&& c <= ’9’? (d = ~(c –’0’) & 0xff, printf(”0x%x\n”, d)) : printf(”%c”, c);修改为：printf(”input a character:\n”)；c = getchar();c >= ’0’&& c <= ’9’? (d = ~(c –’0’), printf(”0x%x\n”, d&0xff)) : printf(”%c ”, c);9、 p104 例4.15原文： Char c;修改为：char c;10、 p110 例4.22 修改为：计算 +-+-=!7!5!3)sin(753x x x x x ，11、 p112 倒数第6行原文： d=-(((3*x-4)*x)-5)*x+13/((9*x-8)*x-5)修改为：d=-( (((3*x-4)*x)-5)*x+13)/((9*x-8)*x-5) 12、 p113 第1行原文： d=-(((3*x-4)*x)-5)*x+13/((9*x-8)*x-5)修改为：d=-( (((3*x-4)*x)-5)*x+13)/((9*x-8)*x-5) 13、 p129原文：修改为：14、 p151 例5.11原文： if (n==0||==1) return 1;修改为：if (n==0||n ==1) return 1;15、 p166 第5.11题原文： (2) 若n i 是奇数，则n i+1=3n i +2修改为：(2) 若n i 是奇数，则n i+1=3n i +116、 p186 例7.1原文： initgraph( gdriver,gmode, "d:\\tc\\bgi");修改为：initgraph( &gdriver,&gmode, "d:\\tc\\bgi");17、 p194原文：修改为：18、 p222 倒数第8行开始原文： cout<<a[k]<<" ";<="" p="">cout<<endl;< p="">修改为：printf(“%d ”,a[k]);printf(“\n ”);原文：左边修改为：右边20、p292 第13行原文：while(*s++=*t++) ;修改为：while(*t++=*s++) ;21、p311 从9.11下数4行原文： B W Kernighan 和D M Ritchie修改为：B.W.Kernighan 和D.M.Ritchie22、p326 第10行原文：char num[4];修改为：char num[5];23、p330 倒数第1行原文：scanf("%d% d% %",&a.start.x,&a.start.y);修改为：scanf("%d% d%",&a.start.x,&a.start.y);24、p335 第16行原文：表达式的值是ˊaˊ，修改为：表达式的值是ˊmˊ，25、p367 倒数第3行原文：while(current->data!=n)修改为：while(current->data!=n && current != NULL) 26、p369 第2行原文：while(current->data!=n)修改为：while(current->data!=n && current != NULL) 27、p371 10.26原文：t=p1->next;prior2->next=p1;修改为：prior2->next=p1;t=p1->next;28、p402 倒数第6行原文：fwide函数修改为：fwi nd函数原文：fclose函数返回0，否则返回NULL。

勘误表

勘误表：前言第2页倒数第7行：误：正：可先浏览第11讲、21讲、31讲、33讲和45-48讲第1页倒数第9行误：可以快速地浏览下面用小字号编排的几节…正：可以快速地浏览1.1节…第2页倒数第21行误：自动冰箱的作用正：自动冰箱的构成第6页倒数第1行误：图1.6 第二条指令完成后的系统状态正：图1.6 第二条指令取指完成后的系统状态第7页第8行误：图1.7 第二条指令取指完成后的系统状态正：图1.7 第二条指令执行后的系统状态第10页第10行误：（一个加工步骤）取到IR碟中的。

正（一个加工步骤）的复印件取到IR碟中的。

第11页倒数第3行误：编写特殊菜谱的魔法师正：编写特殊菜谱的人第15页倒数第8行误：……一个十进进数转化成任何n进制数…正：……一个十进制整数转化成任何n（n>2）进制整数…第20页第3行——第4行误：在这种程序中，还要用内存地址号来取代数据原来的名称。

正：在这种程序中，常常还要用内存地址号来表示要加工的数据在内存的何处。

第21页倒数第3行误：在一台只有一个 CPU的计算机上正：在一台只有一个单核CPU的计算机上第22页第17行误：有用的息。

正：有用的信息。

第23页第6行误：……且开始#include以……正：……且程序的开始部分#include以……第23页第12行误：表1.3 部分内存结构正：表1.3 部分内存中的数据第25页第16行误：……把数据加工成有用信息的电子数字设备……正：……把输入数据加工成有用信息并输出的电子数字设备……第25页倒数第3行误：如果一台计算机只有一个CPU正：如果一台计算机只有一个单核的CPU第26页第3行误：所以在人类看来，单CPU的计算机似乎……正：所以在人们看来，单核CPU的计算机似乎……第32页第3行误：2．3 C 语言简介正：2．3 C 语言特点简介第32页倒数第4——第3行误：在ANSI C99标准….正：（备注：此两行全部删除）第34页倒数第8行误：此外还有一些修饰用的关键字……正：此外还有一些作修饰用的关键字……第37页第1行误：这个存储单元的数值……正：这个存储单元中存放的数值……正：任意多个字符，…….第41页第25行误：…….”,sizeof(ch))正：…….”,sizeof(ch));第42页第17行误：…….用这种形式的方法来…….正：…….用这种形式化的方法来…….第43页第2行误：或运算符（or）“|”、正：或运算符（or）“||”、第43页第18——19行误：即对某个数据执行取数操作指令（就象上例中的变量m和n）。

C++Primer Plus(第6版)中文版编程练习答案--第六章

5
cout<<"请输入捐款者数目："<<endl; cin>>n_of_donation; donation* list=new donation[n_of_donation]; //创建动态分配的结构数组
for(int i=0;i<n_of_donation;i++) //输入捐款者的信息 { cout<<"输入第"<<i+1<<"位捐款者的信息："<<endl; cout<<"名字："; cin.sync(); getline(cin,list[i].name); cout<<"数目："; cin>>list[i].money; } int temp=0; //记录有没有人的捐款大于一万元 cout<<"重要捐款人："<<endl; for(int i=0;i<n_of_donation;i++) { if(list[i].money>10000) { cout<<list[i].name<<" "<<list[i].money<<endl; temp++; } } if(temp==0) cout<<"此项目没有人。"<<endl; temp=0; cout<<"捐款人："<<endl; for(int i=0;i<n_of_donation;i++) { if(list[i].money<=10000) { cout<<list[i].name<<" "<<list[i].money<<endl; temp++; } } if(temp==0) cout<<"此项目没有人。"<<endl; delete list; getchar(); getchar(); return 0; }

VC++6.0常见编译错误中英文对照表

VC++6.0常见编译错误中英文对照表fatal error C1003: error count exceeds number; stopping compilation中文对照：（编译错误）错误太多，停止编译分析：修改之前的错误，再次编译fatal error C1004: unexpected end of file found中文对照：（编译错误）文件未结束分析：一个函数或者一个结构定义缺少“}”、或者在一个函数调用或表达式中括号没有配对出现、或者注释符“/*…*/”不完整等fatal error C1083: Cannot open include file: 'xxx': No such file or directory 中文对照：（编译错误）无法打开头文件xxx：没有这个文件或路径分析：头文件不存在、或者头文件拼写错误、或者文件为只读fatal error C1903: unable to recover from previous error(s); stopping compilation 中文对照：（编译错误）无法从之前的错误中恢复，停止编译分析：引起错误的原因很多，建议先修改之前的错误error C2001: newline in constant中文对照：（编译错误）常量中创建新行分析：字符串常量多行书写error C2006: #include expected a filename, found 'identifier'中文对照：（编译错误）#include命令中需要文件名分析：一般是头文件未用一对双引号或尖括号括起来，例如“#include stdio.h”error C2007: #define syntax中文对照：（编译错误）#define语法错误分析：例如“#define”后缺少宏名，例如“#define”error C2008: 'xxx' : unexpected in macro definition中文对照：（编译错误）宏定义时出现了意外的xxx分析：宏定义时宏名与替换串之间应有空格，例如“#define TRUE"1"”error C2009: reuse of macro formal 'identifier'中文对照：（编译错误）带参宏的形式参数重复使用分析：宏定义如有参数不能重名，例如“#define s(a,a) (a*a)”中参数a重复error C2010: 'character' : unexpected in macro formal parameter list中文对照：（编译错误）带参宏的形式参数表中出现未知字符分析：例如“#define s(r|) r*r”中参数多了一个字符‘|’error C2014: preprocessor command must start as first nonwhite space中文对照：（编译错误）预处理命令前面只允许空格分析：每一条预处理命令都应独占一行，不应出现其他非空格字符error C2015: too many characters in constant中文对照：（编译错误）常量中包含多个字符分析：字符型常量的单引号中只能有一个字符，或是以“\”开始的一个转义字符，例如“char error = 'error';”error C2017: illegal escape sequence中文对照：（编译错误）转义字符非法分析：一般是转义字符位于 ' ' 或 " " 之外，例如“char error = ' '\n;”error C2018: unknown character '0xhh'中文对照：（编译错误）未知的字符0xhh分析：一般是输入了中文标点符号，例如“char error = 'E'；”中“；”为中文标点符号error C2019: expected preprocessor directive, found 'character'中文对照：（编译错误）期待预处理命令，但有无效字符分析：一般是预处理命令的#号后误输入其他无效字符，例如“#!define TRUE 1”error C2021: expected exponent value, not 'character'中文对照：（编译错误）期待指数值，不能是字符分析：一般是浮点数的指数表示形式有误，例如123.456Eerror C2039: 'identifier1' : is not a member of 'identifier2'中文对照：（编译错误）标识符1不是标识符2的成员分析：程序错误地调用或引用结构体、共用体、类的成员error C2041: illegal digit 'x' for base 'n'中文对照：（编译错误）对于n进制来说数字x非法分析：一般是八进制或十六进制数表示错误，例如“int i = 081;”语句中数字‘8’不是八进制的基数error C2048: more than one default中文对照：（编译错误）default语句多于一个分析：switch语句中只能有一个default，删去多余的defaulterror C2050: switch expression not integral中文对照：（编译错误）switch表达式不是整型的分析：switch表达式必须是整型（或字符型），例如“switch ("a")”中表达式为字符串，这是非法的error C2051: case expression not constant中文对照：（编译错误）case表达式不是常量分析：case表达式应为常量表达式，例如“case "a"”中“"a"”为字符串，这是非法的error C2052: 'type' : illegal type for case expression中文对照：（编译错误）case表达式类型非法分析：case表达式必须是一个整型常量（包括字符型）error C2057: expected constant expression中文对照：（编译错误）期待常量表达式分析：一般是定义数组时数组长度为变量，例如“int n=10; int a[n];”中n为变量，这是非法的error C2058: constant expression is not integral中文对照：（编译错误）常量表达式不是整数分析：一般是定义数组时数组长度不是整型常量error C2059: syntax error : 'xxx'中文对照：（编译错误）‘xxx’语法错误分析：引起错误的原因很多，可能多加或少加了符号xxxerror C2064: term does not evaluate to a function中文对照：（编译错误）无法识别函数语言分析：1、函数参数有误，表达式可能不正确，例如“sqrt(s(s-a)(s-b)(s-c));”中表达式不正确2、变量与函数重名或该标识符不是函数，例如“int i,j; j=i();”中i不是函数error C2065: 'xxx' : undeclared identifier中文对照：（编译错误）未定义的标识符xxx分析：1、如果xxx为cout、cin、scanf、printf、sqrt等，则程序中包含头文件有误2、未定义变量、数组、函数原型等，注意拼写错误或区分大小写。

C++-primer-plus(第6版)中文版-编程练习答案(word版)

第二章：开始学习C++ n”；}<<endl; return 0;}double C2F(double t){return *t+32;}<<endl; return 0;}double convert(double t){return 63240*t;n"; return 0;}style(miles per gallon):"<<endl; cout<<Euro_style<<"L/100Km = "<<*Euro_style<<" mpg\n"; return 0;}Enter the automobile gasoline consumption figure inEuropean style(liters per 100 kilometers):Converts to . style(miles per gallon):L/100Km = mpgPress any key to continuestyle(miles per gallon):";double US_style;cin>>US_style;cout<<"Converts to European style(miles per gallon):"<<endl;cout<<US_style<<" mpg = "<< *US_style<<"L/100Km\n"; return 0;}style(miles per gallon):19Converts to European style(miles pergallon): 19 mpg = 100KmPress any key to continue第四章复合类型n";return 0;}rand<<endl<<snack[i].weight<<endl<<snack[i].calory<<endl<<endl;}return 0;}rand="A";eight=;snack[0].calory=200;snack[1].brand="B";snack[1].weight=;snack[1].calory=400;snack[2].brand="C";snack[2].weight=;snack[2].calory=500;for(int i=0;i<3;i++){cout << " brand: " << snack[i].brand<< endl; cout << " weight: " <<snack[i].weight << endl;cout << " calorie: " << snack[i].calory << endl<<endl;}delete [] snack;return 0;}et(); car* ps=newcar[num];for(int i=0;i<num;++i){cout<<"Car #"<<i+1<<":\n";cout<<"Please enter the make: ";getline(cin,ps[i].name); c out<<"Pleaseenter the year made: ";(cin>>ps[i].year).get();}cout<<"Here is your collection:\n";for(int i=0;i<num;++i)cout<<ps[i].year<<" "<<ps[i].name<<endl;delete [] ps;return 0;}#include <iostream>#include <string> usingnamespace std; structcar{string maker; intyear;};int main(){int number;cout << "How many cars do you wish to catalog "; cin >>number;car* a = new car[number];for (int i = 0; i < number; i++){cout << "Car #" << i+1 << ": " << endl; cout <<"Please enter the maker: "; ();getline(cin,a[i].maker);cout << "Please enter the year made: "; cin >>a[i].year;}cout << "Here is your collection: " << endl; for (inti = 0; i < number; i++)cout << a[i].year << " " << a[i].maker <<endl; delete [] a;return 0;}#include <iostream> usingnamespace std; struct car{char maker[20];int year;};int main(){int number;cout << "How many cars do you wish to catalog "; cin >>number;car* a = new car[number];for (int i = 0; i < number; i++){cout << "Car #" << i+1 << ": " << endl; cout <<"Please enter the maker: "; ();(a[i].maker, 20);cout << "Please enter the year made: "; cin >>a[i].year;}cout << "Here is your collection: " << endl; for (int i = 0; i < number; i++)cout << a[i].year << " " << a[i].maker <<endl; delete [] a;return 0;}n"; return 0;}n";return 0;}和的区别是：word != "done"，因为当 word = done 一样时，返回值为1，不一样时才是返回0.;for(int k=0;k<=i;++k)cout<<"*";cout<<endl;}return 0;}第六章分支语句和逻辑运算符n"; break;case 'p':cout<<"A maple is a pianist.\n";break;case 't':cout<<"A maple is a tree.\n";break;case 'g':cout<<"A maple is a game.\n";}return 0;}#include <iostream> usingnamespace std; void show();int main(){show();char choice;while (cin >> choice){switch(choice){case 'c' : cout << "It's a carnivore.\n"; break;case 'p' : cout << "It's a pianist.\n"; break;case 't' : cout << "A maple is a tree.\n"; break;case 'g' : cout << "It's a game.\n"; break;default : cout << "Please enter a c, p, t, or g:";}}return 0;}void show(){cout << "Please enter one of the following choices: \n" "c) carnivore p) pianist\n""t) tree g) game\n";}display by name b. display by title\n"<<"c. display by bopname d. diplay by preference\n"<<"q. quit\n";char ch;bop member[5]={{"Wimp Macho","English Teacher","DEMON",0},{"Raki Rhodes","Junior Programmer","BOOM",1},{"Celia Laiter","Super Star","MIPS",2},{"Hoppy Hipman","Analyst Trainee","WATEE",1},{"Pat Hand","Police","LOOPY",2}};cout<<"Enter your choice:";while(cin>>ch&&ch!='q'){switch(ch){case 'a':for(int i=0;i<5;i++)cout<<member[i].fullname<<endl;break;case 'b':for(int i=0;i<5;i++)cout<<member[i].title<<endl; break;case 'c':for(int i=0;i<5;i++)cout<<member[i].bopname<<endl; break;case 'd':for(int i=0;i<5;i++){if(member[i].preference==0)cout<<member[i].fullname<<endl;else if(member[i].preference==1)cout<<member[i].title<<endl; e lseif(member[i].preference==2)cout<<member[i].bopname<<endl;}break;}cout<<"Next choice: ";}cout<<"Bye!\n";return 0;}#include <iostream> usingnamespace std; const intstrsize = 30; struct bop{char fullname[strsize];char title[strsize]; charbopname[strsize]; intpreference;};void show(); intmain(){bop A[5] ={{"Wimp Macho", "Teacher", "HAHA", 0},{"Raki Rhodes", "Junior Programmer", "LIAR", 1},{"Celia", "engineer", "MIPS", 2},{"Hoppy Hipman", "Analyst Trainee", "WAHU", 1},{"Pat Hand", "Student", "LOOPY", 2}};cout << "Benevolent Order of Programmers Report\n"; show();cout << "Enter your choice: "; charchoice;cin >> choice;while (choice != 'q'){switch(choice){case 'a' : cout << A[0].fullname << endl << A[1].fullname << endl<< A[2].fullname << endl << A[3].fullname << endl<< A[4].fullname << endl; break;case 'b' : cout << A[0].title << endl << A[1].title << endl<< A[2].title << endl << A[3].title << endl<< A[4].title << endl;break;case 'c' : cout << A[0].bopname << endl << A[1].bopname << endl<< A[2].bopname << endl << A[3].bopname << endl<< A[4].bopname << endl; break;case 'd' : cout << A[0].fullname << endl << A[1].title << endl<< A[2].bopname << endl << A[3].title << endl<< A[4].bopname << endl;break;default : cout << "That's not the proper choice.\n";}cout << "Next choice: ";cin >> choice;}cout << "Bye!\n";return 0;}void show(){cout << "a. display by name b. display by title\n"<< "c. display by bopname d. display by preference\n"<< "q. quit\n";}ame); c out<<"请输入第"<<i+1<<"位捐款人捐款的数目："; cin>>ps[i].money;();}cout<<"Grand Patrons:\n";for(int i=0;i<num;++i)if(ps[i].money>10000){cout<<ps[i].name<<"\n"<<ps[i].money<<endl;++temp;}if(temp==0)cout<<"none\n";cout<<"Patrons:\n";for(int i=0;i<num;++i)if(ps[i].money<=10000){cout<<ps[i].name<<"\n"<<ps[i].money<<endl;++temp;}if(temp==0)cout<<"none\n";delete [] ps;return 0;}#include <iostream>#include <string> usingnamespace std; structcharity{string name;double money;};int main(){int number; intcount = 0;cout << "Please enter the number of donator: "; cin >>number;charity *pt = new charity[number]; for(int i = 0; i < number; i++){cout << "Please enter your name: "; ();getline(cin, pt[i].name);cout << "Please enter the money you are going to donate: "; cin >>pt[i].money;if(pt[i].money > 10000)count++;}if(count == 0)cout << "None(money > 10000)"; else{cout << "Grand Patron\n"; for(int i =0; i < number; i++){if(pt[i].money > 10000)cout << pt[i].name << " " << pt[i].money << endl;}}cout << endl;if(10 - count == 0)cout << "None(money < 10000)"; else {cout << "Patron\n";for(int i = 0; i < number; i++){if(pt[i].money < 10000)cout << pt[i].name << " " << pt[i].money << endl;}}return 0;}n"; exit(EXIT_FAILURE);}inFile>>ch; while()){++sum;inFile>>ch;}if())cout<<"End of file reached.\n";else if())cout<<"Input terminated by data mismatch.\n";elsecout<<"Input terminated for unkonwn reason.\n";cout<<"总共有"<<sum<<"个字符在这个文件中。

C++primerplus（第6版）中文版编程练习答案第17章

C++primerplus（第6版）中文版编程练习答案第17章1、//count.cpp#includeusing namespace std;int main(){charch;int count = 0;cout<< "Enter a string($ to quit):\n";while (cin.get(ch)){if (ch != '$'){count++;cout<<ch;< bdsfid="119" p=""></ch;<>}else{cin.putback(ch);break;}}cout<< "Count is " << count <<endl;< bdsfid="128" p=""></endl;<>system("pause");return 0;}2、//filein.cpp#include#include#includeint main(intargc, char *argv[]){using namespace std;if (argc == 1){cerr<< "Usage: " <<="" p="">exit(EXIT_FAILURE);}ofstreamfout(argv[1], ios::out|ios::app);{cerr<< "Can't open " <<="" p="">exit(EXIT_FAILURE);}charch;cout<< "Enter a string: \n";while (cin.get(ch)){if (ch != '\n')fout<<ch;< bdsfid="161" p=""></ch;<> elsebreak;}fout<<endl;< bdsfid="166" p=""></endl;<> fout.close();system("pause");return 0;3、//copy.cpp#include#include#includeint main(intargc, char *argv[]){using namespace std;if (argc == 1){cerr<< "Usage: " <<="" p="">exit(EXIT_FAILURE);}ifstream fin;charch;fin.open(argv[1], ios::in);if (!fin.is_open()){cerr<< "Could not open " <<<endl;<="" bdsfid="194" p=""> exit(EXIT_FAILURE);}ofstreamfout(argv[2], ios::out | ios::trunc);{cerr<< "Could not open " <<<endl;<="" bdsfid="200" p=""> exit(EXIT_FAILURE);}cout<< "Here are the current contents of th "<<="" p="">while (fin.get(ch))cout<<ch;< bdsfid="209" p=""></ch;<> fout<<ch;< bdsfid="211" p=""></ch;<>}fin.close();fout.close();system("pause");return 0;}//a.txtAbcdefghijklmnopqrstuvwxyz4、//copy_cat.cpp#include#include#include#includeusing namespace std;const char *file1 = "a.txt";const char *file2 = "b.txt";const char *file3 = "c.txt";int main(){ifstream fin1, fin2;fin1.open(file1);fin2.open(file2);ofstreamfout;fout.open(file3, ios_base::out | ios_base::trunc); string s1, s2;if (!fin1.is_open() || !fin2.is_open())cerr<< "Can't open " << file1 << " or " << file2 <<endl;< bdsfid="245" p=""></endl;<>exit(EXIT_FAILURE);}if (!fout.is_open()){cerr<< "Can't open " << file3 <<endl;< bdsfid="251" p=""></endl;<>exit(EXIT_FAILURE);}while (!fin1.eof() && !fin2.eof()){getline(fin1, s1);cout<< "File1 " << s1 <<endl;< bdsfid="258" p=""></endl;<>getline(fin2, s2);cout<< "File2 " << s2 <<endl;< bdsfid="261" p=""></endl;<>fout<< s1 << " " << s2 <<endl;< bdsfid="263" p=""></endl;<>}while (!fin1.eof()){getline(fin1, s1);cout<< "More file1 " << s1 <<endl;< bdsfid="269" p=""></endl;<>fout<< s1 <<endl;< bdsfid="271" p=""></endl;<>}while (!fin2.eof())getline(fin2, s2);cout<< "More file2 " << s2 <<endl;< bdsfid="277" p=""></endl;<>fout<< s2 <<endl;< bdsfid="279" p=""></endl;<>}fin1.close();fin2.close();fout.close();system("pause");return 0;}//a.txteggs kites donutsballoons hammersstones//b.txtzero lassitudefinance drama5、//name.cpp#include#include#include#include#include#includeconst char *file1 = "mat.dat";const char *file2 = "pat.dat";const char *file3 = "matnpat.dat";int main(){using namespace std;string fname1;set A;ifstreamfinA, finB;finA.open(file1);finB.open(file2);ofstreamfout;ostream_iteratorout1(cout, " "), out2(fout, "\n");fout.open(file3, ios_base::out | ios_base::trunc);if (!finA.is_open() || !finB.is_open()){cerr<< "Can't open " << file1 << " or " << file2 <<endl;< bdsfid="327" p=""></endl;<>exit(EXIT_FAILURE);}if (!fout.is_open()){cerr<< "Can't open " << file3 <<endl;< bdsfid="333" p=""></endl;<>exit(EXIT_FAILURE);}while (!finA.eof()){getline(finA, fname1);A.insert(fname1);}cout<< "Mat's friends: \n";copy(A.begin(), A.end(), out1);cout<<endl;< bdsfid="344" p=""></endl;<> string fname2;set B;while (!finB.eof()){getline(finB, fname2);B.insert(fname2);}cout<< "Pat's friends: \n";copy(B.begin(), B.end(), out1);cout<<endl;< bdsfid="356" p=""></endl;<>cout<< "Union of Mat and Pat's friends: ";set_union(A.begin(), A.end(), B.begin(), B.end(), out1); set_union(A.begin(), A.end(), B.begin(), B.end(), out2); cout<<endl;< bdsfid="361" p=""></endl;<> finA.close();finB.close();fout.close();system("pause");return 0;}6、//emp.h#ifndef EMP_H_#define EMP_H_#include#include#includeusing namespace std;enumclasstype{ Employee, Manager, Fink, Highfink };classabstr_emp{private:stringfname;stringlname;string job;public:abstr_emp();abstr_emp(const string &fn, const string &ln,const string &j);virtual void ShowAll()const;virtual void SetAll();friendostream&operator<<(ostream&os,constabstr_emp&e);virtual ~abstr_emp() = 0;virtual void writeall(ofstream&ofs);virtual void getall(ifstream&ifs);};class employee :public abstr_emp{public:employee();employee(const string &fn, const string &ln, const string &j);virtual void ShowAll()const;virtual void SetAll();virtual void writeall(ofstream&ofs);virtual void getall(ifstream&ifs);};class manager :virtual public abstr_emp{private:intinchargeof;protected:intInChargeOf()const { return inchargeof; }int&InChargeOf(){ return inchargeof; } public:manager();manager(const string &fn, const string &ln, const string &j, intico = 0);manager(constabstr_emp&e, intico = 0);manager(const manager &m);virtual void ShowAll()const;virtual void SetAll();virtual void writeall(ofstream&ofs);virtual void getall(ifstream&ifs);voidgetInCharge(){cout<< "Enter inchargeof: ";cin>>inchargeof;}voidwriteInCharge(ofstream&ofs){ofs<<inchargeof<<endl;< bdsfid="428" p=""></inchargeof<<endl;<>}voidreadInCharge(ifstream&ifs){ifs>>inchargeof;}};class fink :virtual public abstr_emp{private:stringreportsto;protected:const string ReportsTo()const{ return reportsto; }string&ReportsT o(){ return reportsto; }public:fink();fink(const string &fn, const string &ln,const string &j, const string &rpo);fink(constabstr_emp&e, const string &rpo);fink(const fink &e);virtual void ShowAll()const;virtual void SetAll();virtual void writeall(ofstream&ofs);virtual void getall(ifstream&ifs);voidgetReportsTo(){cout<< "Enter reportsto: ";cin>>reportsto;}voidwriteReportsT o(ofstream&ofs){ofs<<reportsto<<endl;< bdsfid="458" p=""></reportsto<<endl;<>}voidreadReportsT o(ifstream&ifs){ifs>>reportsto;}};classhighfink :public manager, public fink{public:highfink();highfink(const string &fn, const string &ln,const string &j, const string &rpo, intico = 0);highfink(constabstr_emp&e, const string &rpo, intico = 0);highfink(const fink &f, intico = 0);highfink(const manager &m, const string &rpo);highfink(consthighfink&h);virtual void ShowAll()const;virtual void SetAll();virtual void getall(ifstream&ifs);};#endif//emp.cpp#include "emp.h"abstr_emp::abstr_emp() :fname("no one"), lname("no one"), job("no job") {}abstr_emp::abstr_emp(const string &fn, const string &ln,const string &j) : fname(fn), lname(ln), job(j){}voidabstr_emp::ShowAll()const{cout<< "Firstname: " <<fname<<endl;< bdsfid="491" p=""></fname<<endl;<>cout<< "Lastname: " <<lname<<endl;< bdsfid="493" p=""></lname<<endl;<>cout<< "Job is: " << job <<endl;< bdsfid="495" p=""></endl;<>}voidabstr_emp::SetAll(){cout<< "Enter firstname: ";getline(cin, fname);cout<< "Enter lastname: ";getline(cin, lname);cout<< "Enter position: ";getline(cin, job);}ostream&operator<<(ostream&os, constabstr_emp&e){os<<e.fname<< "="" ",="" <<e.job<<endl;<="" <<e.lname<<="" bdsfid="509" p=""></e.fname<<> returnos;}abstr_emp::~abstr_emp(){}{ofs<<fname<< "\n"="" "\n";="" <<="" <<lname<<="" bdsfid="517" job="" p="" }<=""></fname<<>voidabstr_emp::getall(ifstream&ifs){getline(ifs, fname);getline(ifs, lname);getline(ifs, job);}employee::employee() :abstr_emp(){}employee::employee(const string &fn, const string &ln, const string &j) : abstr_emp(fn, ln, j){}void employee::ShowAll()const{abstr_emp::ShowAll();}void employee::SetAll(){abstr_emp::SetAll();}void employee::writeall(ofstream&ofs){ofs<< Employee <<endl;< bdsfid="541" p=""></endl;<>abstr_emp::writeall(ofs);}void employee::getall(ifstream&ifs){abstr_emp::getall(ifs);}manager::manager() :abstr_emp(){}manager::manager(const string &fn, const string &ln,const string &j, intico) : abstr_emp(fn, ln, j), inchargeof(ico) {}manager::manager(constabstr_emp&e, intico) : abstr_emp(e), inchargeof(ico) {}manager::manager(const manager &m) : abstr_emp(m){}void manager::ShowAll()const{abstr_emp::ShowAll();cout<< "Inchargeof: " <<<endl;<="" bdsfid="564" p="">}void manager::SetAll(){abstr_emp::SetAll();cout<< "Enter inchargeof: ";(cin>>inchargeof).get();}void manager::writeall(ofstream&ofs){ofs<< Manager <<endl;< bdsfid="575" p=""></endl;<>abstr_emp::writeall(ofs);ofs<<inchargeof<<endl;< bdsfid="578" p=""></inchargeof<<endl;<>}void manager::getall(ifstream&ifs){abstr_emp::getall(ifs);ifs>>inchargeof;}fink::fink() :abstr_emp(){}fink::fink(const string &fn, const string &ln,const string &j, const string &rpo) : abstr_emp(fn, ln, j), reportsto(rpo) {}fink::fink(constabstr_emp&e, const string &rpo) : abstr_emp(e), reportsto(rpo){}fink::fink(const fink &e) : abstr_emp(e){}void fink::ShowAll()const{abstr_emp::ShowAll();cout<< "Reportsto: " <<<endl;<="" bdsfid="601" p="">}void fink::SetAll(){abstr_emp::SetAll();cout<< "Enter reportsto: ";cin>>reportsto;}void fink::writeall(ofstream&ofs){ofs<< Fink <<endl;< bdsfid="612" p=""></endl;<>abstr_emp::writeall(ofs);ofs<<reportsto<<endl;< bdsfid="615" p=""></reportsto<<endl;<>}void fink::getall(ifstream&ifs){abstr_emp::getall(ifs);ifs>>reportsto;}highfink::highfink() :abstr_emp(), manager(), fink(){}highfink::highfink(const string &fn, const string &ln,const string &j, const string &rpo, intico) : abstr_emp(fn, ln, j), manager(fn, ln, j, ico), fink(fn, ln, j, rpo){highfink::highfink(constabstr_emp&e, const string &rpo, intico) : abstr_emp(e), manager(e, ico), fink(e, rpo){}highfink::highfink(const fink &f, intico) : abstr_emp(f), manager(f, ico), fink(f){}highfink::highfink(const manager &m, const string &rpo) : abstr_emp(m), manager(m), fink(m, rpo){}highfink::highfink(consthighfink&h) : abstr_emp(h), manager(h), fink(h){}voidhighfink::ShowAll()const{abstr_emp::ShowAll();cout<< "InChargeOf: ";cout<< manager::InChargeOf() <<endl;< bdsfid="645" p=""></endl;<>cout<< "ReportsT o: ";cout<< fink::ReportsT o() <<endl;< bdsfid="648" p=""></endl;<>}voidhighfink::SetAll(){abstr_emp::SetAll();manager::getInCharge();fink::getReportsTo();}voidhighfink::writeall(ofstream&ofs){ofs<<highfink<<endl;< bdsfid="659" p=""></highfink<<endl;<>abstr_emp::writeall(ofs);manager::writeInCharge(ofs);fink::writeReportsT o(ofs);}voidhighfink::getall(ifstream&ifs){abstr_emp::getall(ifs);manager::readInCharge(ifs);fink::readReportsT o(ifs);}//useemp.cpp#include "emp.h"constint MAX = 10;const char *file = "a.txt";int main(void){abstr_emp *pc[MAX];charch;ifstream fin;fin.open(file);inti = 0;if (fin.is_open()){cout<< "Here are the current contents of the " << file <<" file:\n";intclasstype;i = 0;while ((fin >>classtype).get(ch)){switch (classtype){case Employee:pc[i] = new employee;break;case Manager:pc[i] = new manager;break;case Fink:pc[i] = new fink;break;caseHighfink:pc[i] = new highfink;break;}cout<<classtype<<endl;< bdsfid="705" p=""></classtype<<endl;<>pc[i]->getall(fin);pc[i++]->ShowAll();}}fin.close();ofstreamfout;fout.open(file, ios_base::out | ios_base::app);if (!fout.is_open()){cerr<< "Can't open " << file << " file for output.\n";exit(EXIT_FAILURE);}cout<< "e to employee, m to manager\n"<< "f to fink, h to highfink\n"<< "q to quit: ";int index = 0;while (cin.get(ch).get() &&ch != 'q'&&index < MAX) {switch (ch){case'e':pc[index] = new employee;pc[index]->SetAll();index++;break;case'm':pc[index] = new manager;pc[index]->SetAll();index++;break;case'f':pc[index] = new fink;pc[index]->SetAll();index++;break;case'h':pc[index] = new highfink;pc[index]->SetAll();index++;break;default:cout<< "Try again";break;}if (index > MAX)break;cout<< "e to employee, m to manager\n"<< "f to fink, h to highfink\n"<< "q to quit: ";}for (i = 0; i< index; i++)pc[i]->writeall(fout);fout.close();fin.clear();fin.open(file);if (fin.is_open()){cout<< "Here are the current contents of the "<< file <<" file:\n";intclasstype;i = 0;while ((fin >>classtype).get(ch)){switch (classtype){case Employee:pc[i] = new employee;break;case Manager:pc[i] = new manager;break;case Fink:pc[i] = new fink;break;caseHighfink:pc[i] = new highfink;break;}cout<<classtype<<endl;< bdsfid="784" p=""></classtype<<endl;<>pc[i]->getall(fin);pc[i++]->ShowAll();}}cout<< "Done.\n";system("pause");return 0;}7、//vcopy.cpp#include#include#include#include#include#include#includeusing namespace std;voidShowStr(const string &);voidGetStrs(ifstream&, vector&);class Store{ofstream&fout;public:Store(ofstream&os) :fout(os){}void operator()(const string &str);};void Store::operator()(const string &str){size_tlen = str.size();fout.write((char *)&len, sizeof(size_t)); fout.write(str.data(), len);}int main(){vectorvostr;string temp;cout<< "Enter strings (empty line to quit):\n";while (getline(cin, temp) && temp[0] != '\0')vostr.push_back(temp);cout<< "Here is your input.\n";for_each(vostr.begin(), vostr.end(), ShowStr); ofstreamfout("strings.dat", ios_base::out | ios_base::binary); for_each(vostr.begin(), vostr.end(), Store(fout));fout.close();vectorvistr;ifstream fin("strings.dat", ios_base::in | ios_base::binary);if (!fin.is_open()){cerr<< "Could not open file for input.\n";exit(EXIT_FAILURE);}GetStrs(fin, vistr);cout<< "\nHere are the strings read from the file:\n";for_each(vistr.begin(), vistr.end(), ShowStr);system("pause");return 0;}voidShowStr(const string &str){cout<<str<<endl;< bdsfid="856" p=""></str<<endl;<> }voidGetStrs(ifstream&fin, vector&str){char *s;size_tlen;while (fin.read((char *)&len, sizeof(size_t))){s = new char[len]; fin.read(s, len);s[len + 1] = '\0'; str.push_back(s); }}。

C-Primer-Plus第六版中文版习题答案

C Primer Plus第六版中文版习题答案Github: /zhayujie/C-Primer-Plus第一章1.#include <stdio.h>int main(void) {double inch, cm;printf("Please input the inches: ");scanf("%lf", &inch);cm = inch * 2.54;printf("%g cm\n", cm);return 0;}第二章3.#include<stdio.h>int main(void){int days,years=21;days=years*365;printf("我的年龄是%d岁，%d天\n",years,days);return 0;}4.#include<stdio.h>void jolly(void);void deny(void);int main(void){jolly();jolly();deny();return 0;}void jolly(void){printf("For he's a jolly good fellow!\n"); }void deny(void){printf("Which nobody can deny!\n");}5.#include<stdio.h>void br(void);void ic(void);int main(void){br();printf(",");ic();printf("\n");ic();printf("\n");br();printf("\n");return 0;}void br(void){printf("Brazil,Russia");}void ic(void){printf("India,China");}6.#include<stdio.h>int main(void){int toes=10;int toes_2,toes2;toes_2=2*toes;toes2=toes*toes;printf("toes是%d,toes的两倍是%d,toes的平方是%d\n",toes,toes_2,toes2); return 0;}8.#include<stdio.h>void one_three(void);void two(void);int main(void){printf("starting now\n");one_three();}void one_three(void){printf("one\n");two();printf("three\n");printf("done!\n");}void two(void){printf("two\n");}第三章2.#include<stdio.h>int main(void){char ch;printf("please input a number:");scanf("%d",&ch);printf("%c\n",ch);return 0;}4.#include<stdio.h>int main(void){float a;printf("Enter a floating-point value: ");scanf("%f",&a);printf("fixed-point notation: %f\n",a);printf("exponential notation: %e\n",a);return 0;}5.#include<stdio.h>int main(void){int age;double seconds;printf("please input your age: ");scanf("%d",&age);seconds=age*3.156e7;printf("the corresponding seconds are: %e\n",seconds);return 0;}7.#include<stdio.h>int main(void){float inches,cms;printf("input your height(inch): ");scanf("%f",&inches);cms=inches*2.54;printf("your height(cm): %f\n",cms);return 0;}8.#include<stdio.h>int main(void){float pint,ounce,soupspoon,teaspoon,cup;printf("input the number of cups: ");scanf("%f",&cup);pint=cup/2;ounce=cup*8;soupspoon=ounce*2;teaspoon=soupspoon*3;printf("they are equivalent of:\n%f pint\n%f ounce\n%f soupspoons\n%f teaspoons\n",pint,ounce,soupspoon,teaspoon);return 0;}第四章1.#include<stdio.h>int main(void){char firstname[40],lastname[40];printf("Input your firstname: ");scanf("%s",firstname);printf("Input your lastname: ");scanf("%s",lastname);printf("Your name is %s,%s\n",firstname,lastname);return 0;}2.#include<stdio.h>#include<string.h>int main(void){char name[40];int width;printf("Input your name: ");scanf("%s",name);width=strlen(name)+3;printf("%*s\n",width,name); //输入的名和姓中间不能分隔return 0;}4.#include<stdio.h>int main(void){float height;char name[40];printf("Input your height(cm) and name: ");scanf("%f%s",&height,name);height=height/100;printf("%s, you are %.3fm tall\n",name,height);return 0;}5.#include<stdio.h>int main(void){float speed,size,time;printf("Input the download speed(Mb/s) and the file size(MB):\n"); scanf("%f%f",&speed,&size);time=size/speed*8.0;printf("At %.2f megabits per second, a file of %.2f megabytes\n",speed,size);printf("downloads in %.2f seconds.\n",time);return 0;}6.#include<stdio.h>#include<string.h>int main(void){char firstname[40],lastname[40];printf("Input your firstname: ");scanf("%s",firstname);printf("Input your lastname: ");scanf("%s",lastname);printf("%s %s\n",firstname,lastname);printf("%*d %*d\n",strlen(firstname),strlen(firstname),strlen(lastname),strlen(lastname)); printf("%s %s\n",firstname,lastname);printf("%*d %*d\n",-strlen(firstname),strlen(firstname),-strlen(lastname),strlen(lastname) );return 0;}7.#include<stdio.h>#include<float.h>int main(void){double a=1.0/3.0;float b=1.0/3.0;printf("%.6f %.6f\n",a,b); //左侧double型右侧float型printf("%.12f, %.12f\n",a,b);printf("%.16f, %.16f\n",a,b);printf("DBL_DIG: %d\n",DBL_DIG);printf("FLT_DIG: %d\n",FLT_DIG);return 0;}8.#include<stdio.h>#define GALLON 3.758 //1 gallon=3.785 liters#define MILE 1.609 //1 mile=1.609 kilometersint main(void){float gallon,mile;printf("Input miles and gallons: ");scanf("%f%f",&mile,&gallon);printf("Miles per gallon: %.1f\n",mile/gallon);printf("Litre per 100 kilometers: %.1f\n",gallon*GALLON/(mile*MILE)*100);return 0;}第五章1.#include<stdio.h>#define H_P_M 60 //1h=60minint main(void){int hour,min,left;printf("Enter the number of minutes: ");scanf("%d",&min);while(min>0){hour=min/H_P_M;left=min%H_P_M;printf("%d minutes is %d hours and %d minutes.\n",min,hour,left); printf("Enter your next value: ");scanf("%d",&min);}printf("Good bye!\n");return 0;}2.#include<stdio.h>int main(void){int num,count;printf("Input a integer: ");scanf("%d",&num);count=0;while(count++<11){printf("%d ",num);num++;}printf("\n");return 0;}3.#include<stdio.h>#define DAYS_PER_WEEK 7 //一周7天int main(void){int day,week,left;printf("Input the number of days: ");scanf("%d",&day);while(day>0){week=day/DAYS_PER_WEEK;left=day%DAYS_PER_WEEK;printf("%d days are %d weeks, %d days.\n",day,week,left); printf("Next input: ");scanf("%d",&day);}return 0;}4.#include<stdio.h>#define CM_PER_FEET 30.48 //1feet=30.48cm#define CM_PER_INCH 2.54 //1inch=2.54cmint main(void){int feet;float cm,inch;printf("Enter a height in centimeters: ");scanf("%f",&cm);while(cm>0){feet=(int)(cm/CM_PER_FEET);inch=(cm-feet*CM_PER_FEET)/CM_PER_INCH;printf("%.1f cm = %d feet, %.1f inches\n",cm,feet,inch); printf("Enter a height in centimeters (<=0 to quit): "); scanf("%f",&cm);}printf("bye\n");return 0;}5.#include<stdio.h>int main(void){int count,sum,days;printf("Input the number of days: ");scanf("%d",&days);count=sum=0;while(count++<days)sum=sum+count;printf("The money you earned: %d\n",sum);return 0;}6.#include<stdio.h>int main(void){int count,sum,days;printf("Input the number of days: ");scanf("%d",&days);count=sum=0;while(count++<days)sum=sum+count*count;printf("The money you earned: %d\n",sum);return 0;}7.#include<stdio.h>void cube(double n);int main(void){double num;printf("Input a number: ");scanf("%lf",&num);cube(num);}void cube(double n){printf("The cube of %f is %f\n",n,n*n*n);}8.#include<stdio.h>int main(void){int num1,num2;printf("This program computes moduli.\n");printf("Enter an integer to serve as the second operand: ");scanf("%d",&num1);printf("Now enter the first operand: ");scanf("%d",&num2);while(num2>0){printf("%d %% %d is %d\n",num2,num1,num2%num1);printf("Enter next number for first operand (<= 0 to quit): "); scanf("%d",&num2);}printf("Done\n");}9.#include<stdio.h>void Temperatures(double fah);int main(void){double fah,cel,kel;//华氏温度，摄氏温度，开氏温度printf("Input the Fahrenheit temperature: ");while(scanf("%lf",&fah)==1){Temperatures(fah);printf("Next input: ");}printf("Done.\n");}void Temperatures(double fah){const double a=5.0,b=9.0,c=32.0,d=276.13; printf("%.2f ℉ is %.2f ℃, %.2f K.\n",fah,a/b*(fah-c),a/b*(fah-c)+d);}第六章1.#include<stdio.h>#define SIZE 26int main(void){char ch[SIZE];int index;for(index=0;index<SIZE;index++){ch[index]='a'+index;printf("%c ",ch[index]);}printf("\n");return 0;}2.#include<stdio.h>int main(void){int i,j;for(i=1;i<=5;i++){for(j=1;j<=i;j++)printf("$");printf("\n");}return 0;}3.#include<stdio.h>int main(void){int i,j;for(i=1;i<=6;i++){for(j=0;j<i;j++)printf("%c",'F'-j); printf("\n");}return 0;}4.#include<stdio.h>#define ROWS 6int main(void){char ch;int i,j;for(ch='A',i=0;i<ROWS;i++) {for(j=0;j<=i;j++)printf("%c",ch++); printf("\n");}return 0;}5.#include<stdio.h>#define ROWS 5int main(void){char ch='A';int i,j;for(i=1;i<=ROWS;i++){for(j=1;j<=ROWS-i;j++)printf(" ");for(j=0;j<i;j++)printf("%c",ch+j);for(j=i-2;j>=0;j--)printf("%c",ch+j);printf("\n");}return 0;}6.#include<stdio.h>int main(void){int max,min,num;printf("Input the min and max: ");scanf("%d%d",&min,&max);printf("%10s%10s%10s\n","number","square","cube");for(num=min;num<=max;num++)printf("%10d%10d%10d\n",num,num*num,num*num*num); return 0;}7.//与题目不同打印的是句子#include<stdio.h>#include<string.h>#define SIZE 40int main(void){int i,index=-1;char ch[SIZE];printf("Input a word: ");do{ index++;scanf("%c",&ch[index]);}while(ch[index]!='\n');for(i=index+1;i<=40;i++)ch[i]='\0';for(index=strlen(ch);index>=0;index--)printf("%c",ch[index]);printf("\n");return 0;}8.#include<stdio.h>int main(void){double n1,n2;printf("Input two numbers: ");while(2==scanf("%lf%lf",&n1,&n2)){printf("%f\n",(n1-n2)/n1*n2);printf("Input your next pair of numbers: ");}printf("Bye!\n");return 0;}9.#include<stdio.h>double calculate(double n1, double n2);int main(void){double num1, num2;printf("Input two numbers: ");while (2 == scanf("%lf%lf", &num1, &num2)) //输入两个浮点数 {printf("%f\n", calculate(num1, num2)); //函数调用printf("Input your next pair of numbers: ");}printf("Bye!\n");return 0;}double calculate(double n1, double n2){return ((n1 - n2) / (n1 * n2)); //返回运算结果}10.#include <stdio.h>int main(void){int lower, upper;int num, sum;printf("Enter lower and upper integer limits: ");scanf("%d%d", &lower, &upper);while (lower < upper){for (sum=0, num=lower; num <= upper; num++)sum = sum + num * num; //计算平方和printf("The sums of the squares from %d to %d is %d\n", lower * lower, upper * upper, sum); //输出结果printf("Enter next set of limits: ");scanf("%d%d", &lower, &upper); //下一次输入}printf("Done\n");return 0;}11.#include <stdio.h>#define SIZE 8int main(void){int num[SIZE];int index;printf("Enter 8 integers: ");for (index=0; index<SIZE; index++) //输入8个整数scanf("%d", &num[index]);for (index=SIZE-1; index >= 0; index--) //倒序输出printf("%d ", num[index]);printf("\n");return 0;}12.#include <stdio.h>int main(void){double sum1=0, sum2=0;int count, items, sign;printf("Enter the items: ");scanf("%d", &items); //输入序列的项数for (count=1, sign=1; count <= items; count++, sign *= -1){sum1 += 1.0 / count;sum2 += 1.0 * sign / count;} //分别计算两序列的和 printf("1.0 + 1.0/2.0 + 1.0/3.0 + 1.0/4.0 + ... = %f\n", sum1); printf("1.0 - 1.0/2.0 + 1.0/3.0 - 1.0/4.0 + ... = %f\n", sum2);return 0;}13.#include <stdio.h>#define SIZE 8int main(void){int index, count, num[SIZE];for (index = 0, count = 1; index < SIZE; index++){count *= 2;num[index] = count;} //for循环将数组元素设为2的前8次幂 index=0; //初始化index的值doprintf("%d ", num[index++]);while (index < SIZE); //do while循环显示数组元素的值printf("\n");return 0;}14.#include <stdio.h>#define SIZE 8int main(){double num1[SIZE], num2[SIZE];int index1, index2, index;printf("Enter 8 numbers to the first array:\n");for (index1 = 0; index1 < SIZE; index1++)scanf("%lf", &num1[index1]); //向第一个数组输入8个数 num2[0] = num1[0];for (index1 = 1, index2 = 1; index1 < SIZE; index1++, index2++) num2[index2] = num2[index2-1] + num1[index1];//为第二个数组赋值（是第一个数组对应的元素之和）printf("The first array: ");for (index=0; index < SIZE; index++) {printf("%6.2f", num1[index]);} //输出第一个数组的内容 printf("\nThe second array: ");for (index=0; index < SIZE; index++) {printf("%6.2f", num2[index]); //输出第二个数组的内容 }printf("\n");return 0;}15.#include <stdio.h>#include <string.h>#define SIZE 255int main(void){int index;char ch[SIZE];printf("Enter a line: ");for(index = 0, scanf("%c", &ch[0]); ch[index] != '\n';){index++;scanf("%c", &ch[index]);} //输入内容到字符数组中,回车时结束for(index += 1; index < SIZE; index++)ch[index] = '\0'; //将数组剩余空间补充为'\0'for(index = strlen(ch); index >=0; index--)printf("%c", ch[index]); //倒序输出内容printf("\n");return 0;}16.#include <stdio.h>#define RATE_DAPHNE 0.1#define RATE_DEIRDRE 0.05 //两人的利率#define MONEY 100int main(void){int year;double daphne = MONEY, deirdre = MONEY; //两人的初始投资额相同for (year = 1; daphne >= deirdre; year++){daphne += MONEY * RATE_DAPHNE;deirdre += deirdre * RATE_DEIRDRE;}//计算Deirdre投资额超过Daphne需要的年数和当时的金额printf("After %d year, Deirdre's investment will be more than Daphne's,\n""Daphne's investment will be $%lf,\nand Deirdre's investment will be $%lf.\n",year, daphne, deirdre); //输出结果return 0;}17.#include <stdio.h>#define INITIAL_MONEY 100 //账户初始金额为100万元#define ANNUAL_RATE 0.08 //年利率为8%int main(void){int year;double money;for(year = 1, money=INITIAL_MONEY; money>0; year++)money += money * ANNUAL_RATE - 10; //计算每年年终的账户余额printf("After %d years, Chuckie will draw all money from his account.\n", year);return 0;}18.#include <stdio.h>#define INITIAL_NUMBER 5 //初始朋友数为5人#define DUNBAR_NUMBER 150 //邓巴数int main(void){int week;int number = INITIAL_NUMBER;for (week = 1; number <= DUNBAR_NUMBER; week++){number = (number - week) * 2; //计算每周的朋友数量printf("After %d week, the number of Rabnud's friends is %d\n", week, number);}return 0;}第七章1.#include <stdio.h>int main(void){char ch;int n_space = 0; //空格数int n_newline = 0; //换行数int n_others = 0; //其他字符数printf("Enter some text; Enter # to quit.\n"); while ((ch = getchar()) != '#'){if (ch == ' ')n_space++;else if (ch == '\n')n_newline++;elsen_others++;}printf("Spaces: %d, newlines: %d, others: %d\n", n_space, n_newline, n_others);return 0;}2.#include <stdio.h>#define CHARS_PER_LINE 8 //每行字符数int main(void){char ch;int n_chars = 1; //字符数printf("Enter some characters(# to quit):\n"); while ((ch = getchar()) != '#'){printf("%3c(%3d) ", ch, ch);if (n_chars++ % CHARS_PER_LINE == 0)printf("\n");}printf("\n");return 0;}3.#include <stdio.h>int main(void){int num;int n_even = 0, n_odd = 0; //偶数和奇数个数int sum_even = 0, sum_odd = 0; //偶数和奇数和printf("Enter some integers(0 to quit):\n");scanf("%d", &num);while (num != 0){if (num % 2 == 0){n_even++;sum_even += num;} //计算偶数个数和偶数和else{n_odd++;sum_odd +=num;} //计算奇数个数和奇数和scanf("%d",&num);}printf("The number of even numbers is %d, ""and the everage of even numbers is %.2f\n",n_even, (n_even == 0) ? 0 : (float)sum_even / n_even); printf("The number of odd numbers is %d, ""and the everrage of odd numers is %.2f\n",n_odd, (n_odd == 0) ? 0 : (float)sum_odd / n_odd);return 0;}4.#include <stdio.h>int main(void){char ch;int n_repl = 0; //替换次数printf("Enter some texts(# to quit):\n");while ((ch = getchar()) != '#') {if (ch == '.'){ch = '!';n_repl++;} //替换句号else if (ch == '!'){printf("!");n_repl++;} //替换感叹号printf("%c", ch);}printf("\n%d substitutions were made.\n", n_repl);return 0;}5.#include <stdio.h>int main(void){char ch;int n_repl = 0; //替换次数printf("Enter some texts(# to quit):\n");while ((ch = getchar()) != '#') {switch (ch){case '.': ch = '!';n_repl++;break;case '!': printf("!");n_repl++;break;default: break;} //利用switch语句进行替换 printf("%c",ch);}printf("\n%d substitutions were made.\n", n_repl);return 0;}6.#include <stdio.h>int main(void){char ch;char last_ch = 0; //前一个字符int count=0;printf("Enter some texts(# to quit):\n");while ((ch = getchar()) != '#'){if ((ch == 'i') && (last_ch == 'e'))count++;last_ch = ch; //出现ei时，计数+1}printf("\"ei\" appeared %d times.\n", count);return 0;}7.#include <stdio.h>#define BASE 1000 //基本工资 100美元/h#define TIME 40 //超过40h为加班#define MUL 1.5 //加班时间算作平时的1.5倍#define RATE1 0.15 //前300美元的税率#define RATE2 0.2 //300-450美元的税率#define RATE3 0.25 //大于450美元的税率#define BREAK1 300 //税率的第一个分界点#define BREAK2 450 //税率的第二个分界点int main(void){double hour, tax, gross;printf("Input your work hours in a week: ");scanf("%lf", &hour);if (hour <= TIME)gross = hour * BASE;elsegross = TIME * BASE + (hour - TIME) * MUL * BASE; //计算总收入if (gross <= BREAK1)tax = gross * RATE1;else if (gross <= BREAK2)tax = BREAK1 * RATE1 + (gross - BREAK1) * RATE2;elsetax = BREAK1 * RATE1 + (BREAK2 - BREAK1) * RATE2+ (gross - BREAK2) * RATE3;//计算税金printf("Your gross income is $%.2lf\nYour tax is $%.2lf\n""Your net income is $%.2lf\n",gross, tax, (gross - tax));return 0;8.#include <stdio.h>#define BASE1 8.75#define BASE2 9.33#define BASE3 10.00#define BASE4 11.20//四种等级的基本工资#define TIME 40 //超过40h为加班#define MUL 1.5 //加班时间算作平时的1.5倍#define RATE1 0.15 //前300美元的税率#define RATE2 0.2 //300-450美元的税率#define RATE3 0.25 //大于450美元的税率#define BREAK1 300 //税率的第一个分界点#define BREAK2 450 //税率的第二个分界点int main(void){double base, hour, tax, gross;int count, num;const int LENGTH = 65; //*的长度printpart: for (count = 0; count < LENGTH; count++)printf("*");printf("\nEnter the number corresponding to the desired pay rate or action:\n");printf("%-36s%s","1) $8.75/hr", "2) $9.33/hr\n");printf("%-36s%s","3) $10.00/hr", "4) $11.20/hr\n");printf("%s\n", "5) quit");for (count = 0; count < LENGTH; count++)printf("*");printf("\n");//打印表格while (scanf("%d", &num) == 1) {switch (num){case 1: base = BASE1;break;case 2: base = BASE2;break;case 3: base = BASE3;break;case 4: base = BASE4;break;case 5: printf("quit.\n");return 0;default: printf("Please input the right option.\n");goto printpart;} //选择基本工资等级printf("Input your work hours in a week: ");scanf("%lf", &hour);if (hour <= TIME)gross = hour * base;elsegross = TIME * base + (hour - TIME) * MUL * base;//计算总收入if (gross <= BREAK1)tax = gross * RATE1;else if (gross <= BREAK2)tax = BREAK1 * RATE1 + (gross - BREAK1) * RATE2;elsetax = BREAK1 * RATE1 + (BREAK2 - BREAK1) * RATE2+ (gross - BREAK2) * RATE3;//计算税金printf("Your gross income is $%.2lf\nYour tax is $%.2lf\n" "Your net income is $%.2lf\n",gross, tax, (gross - tax));printf("\nYour next choice:\n");}return 0;}9.#include <stdio.h>int main(void){int div, prime;int num, count;int flag;printf("Input a positive integer: ");scanf("%d", &num);printf("The prime numbers in range:\n");for (prime = 2; prime <= num; prime++) //外层循环显示所有素数 {flag = 1;for (div = 2; (div * div) <= prime; div++){if (prime % div == 0)flag = 0;} //内层循环检验是否为素数 if (flag) //利用标记flag判断printf("%d ",prime);}printf("\n");return 0;}10.#include <stdio.h>#define RATE1 0.15#define RATE2 0.28#define SINGLE 17850 //单身人群的税率分界点#define HOST 23900 //户主人群的税率分界点#define MAR_SHA 29750 //已婚共有人群的分界点#define MAR_DEV 14875 //已婚离异人群的分界点int main(void){int num;double income, tax_break, tax;printpart: printf("Please enter Corresponding""figures to select the type\n");printf("1 single, 2 host, 3 married and shared, ""4 married but devoced and 5 to quit.\n");scanf("%d", &num);switch (num){case 1: tax_break = SINGLE;break;case 2: tax_break = HOST;break;case 3: tax_break = MAR_SHA;break;case 4: tax_break = MAR_DEV;break;case 5: printf("quit.\n");return 0;default: printf("Please input right number.");goto printpart; //回到输入阶段}printf("Enter your income: "); //指定种类和收入while (scanf("%lf", &income) == 1){if (income <= tax_break)tax = income * RATE1;elsetax = tax_break * RATE1 + (income - tax_break) * RATE2; //计算税金printf("The tax is $%.2lf.\n", tax);printf("Your next input: \n");goto printpart; //回到输入阶段}return 0;}11.#include <stdio.h>#include <ctype.h>#define ARTICHOKE 2.05 //洋蓟2.05美元/磅#define BEET 1.15 //甜菜1.15美元/磅#define CARROT 1.09 //胡萝卜1.09美元/磅#define DISCOUNT_LIMIT 100//包装费和运费打折要求订单100美元#define DISCOUNT_RATE 0.05 //折扣为%5#define BREAK1 5#define BREAK2 20 //装运费的分界点#define FEE1 6.5#define FEE2 14#define FEE3_RATE 0.5//不同重量区间的装运费，其中超过20磅的每续重一磅//增加0.5元int main(void){double weight;double weight_artichoke = 0;double weight_beet = 0;double weight_carrot = 0; //购买三种蔬菜的重量double total_weight; //总重量double veg_cost; //三种蔬菜总共花费double order_cost; //订单总额double total_cost; //费用总额double pack_tran_fee; //装运费double discount;int count = 0;char ch;printf("Please select the vegetables you want to buy:\n");printf("a: artichoke $%.2f/lb\n", ARTICHOKE);printf("b: beet $%.2f/lb\n", BEET);printf("c: carrot $%.2f/lb\n", CARROT);printf("q: quit.\n");//打印选择信息while ((ch = tolower(getchar())) != 'q'){// if (ch == '\n')// continue; //滤掉回车switch (ch){case 'a': printf("Input the weight of artichoke in pound: "); scanf("%lf", &weight);weight_artichoke += weight;count++;printf("Continue entering a, b, c or q: ");break;case 'b': printf("Input the weight of beet in pound: ");scanf("%lf", &weight);weight_beet += weight;count++;printf("Continue entering a, b, c or q: ");break;case 'c': printf("Input the weight of carrot in pound: ");scanf("%lf", &weight);weight_carrot += weight;count++;printf("Continue entering a, b, c or q: ");break;default: printf("Please enter the right character.");}while (getchar () != '\n')continue; //滤掉输入重量后面的所有字符}if (!count){printf("Bye.\n");return 0;} //开始输出q，直接退出total_weight = weight_artichoke + weight_beet + weight_carrot;veg_cost = weight_artichoke * ARTICHOKE + weight_beet * BEET+ weight_carrot * CARROT;discount = 0;if (veg_cost >= DISCOUNT_LIMIT){discount = veg_cost * DISCOUNT_RATE;order_cost = veg_cost - discount;}elseorder_cost = veg_cost; //折扣计算if (total_weight <= BREAK1)pack_tran_fee = FEE1;else if (total_weight <= BREAK2)pack_tran_fee = FEE2;elsepack_tran_fee = FEE2 + (total_weight - BREAK2) * FEE3_RATE;//装运费计算total_cost = order_cost + pack_tran_fee;printf("\nHere is what you choose:\n");if (weight_artichoke) {printf("artichoke Price: $%.2f/lb weight: %.2f pounds cost: $%.2f\n",ARTICHOKE, weight_artichoke, weight_artichoke * ARTICHOKE); }if (weight_beet) {printf("beet Price: $%.2f/lb weight: %.2f pounds cost: $%.2f\n",。

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