2009年中考历史总复习资料

8-6
#include<iostream>
//#include<windows.h>
using namespace std;
const double PI=3.1415926;
class Space{
public:
Space(){cout<<"Conductor is called"<<endl;}
c=a;
k=b;
}
void getArea(){
cout<<"长方形的面积为: c*k="<<c*k<<endl;
}
void getPerim(){
cout<<"长方形的周长: 2*(c+k)= "<<2*(c+k)<<endl;
}
private:
int c;
void getXY(){
cout<<"("<<x<<","<<y<<")"<<endl;}
Point& operator++();
Point operator++(int);
Point& operator--();
Point operator--(int);
int a;
int b;
double r;
cout<<"输出循环次数："<<endl;
cin>>n;
do{
system("cls");
cout<<"输出长方形的长与宽："<<endl;
cin>>a>>b;
cout<<"输出圆的半径："<<endl;
cin>>r;
cout<<"圆的周长为: 2*PI*R="<<2*PI*R<<endl;
}
private:
double R;
};
void fun(Space *ptr){
ptr->getArea();
ptr->getPerim();
}
int main(){
int i=0;
int n;
cout<<"BaseClass::fn2()"<<endl;
}
class DerivedClass:public BaseClass{
public:
void fn1();
void fn2();
};
void DerivedClass::fn1(){
cout<<"DerivedClass::fn1()"<<endl;
private:
int x;
int y;
};
Point operator+(Point p1,Point p2){
return Point(p1.x+p2.x,p1.y+p2.y);
}
int main(){
Point p1(4,5),p2(3,6),p3;
#include <iostream>
using namespace std;
class Point{
public:
Point(int xx,int yy){
x=xx;
y=yy;}
Point(Point &p){
x=p.x;
y=p.y;
}
(*ptr).fn1();
(*ptr).fn2();
(*ptr2).fn1();
(*ptr2).fn2();
return 0;
}
8-10
// Note:Your choice is C++ IDE
#include <iostream>
using namespace std;
cout<<"show myPoint-- is: "<<endl;
(myPoint--).getXY();
cout<<"show --myPoint is: "<<endl;
(--myPoint).getXY();
return 0;
}
8-8
#include<iostream>
private:
int x,y;
};
Point& Point::operator++(){
x++;
y++;
return *this;
}
Point Point::operator++(int){
Point old=*this;
++(*this);
return old;
cout<<"first point is: "<<endl;
myPoint.getXY();
cout<<"show myPoint++ is: "<<endl;
(myPoint++).getXY();
cout<<"show ++myPoint is: "<<endl;
(++myPoint).getXY();
}
void DerivedClass::fn2(){
cout<<"DerivedClass::fn2()"<<endl;
}
int main(){
DerivedClass derivedClass;
BaseClass *ptr=&derivedClass;
DerivedClass *ptr2=&derivedClass;
using namespace std;
class BaseClass{
public:
virtual void fn1();
void fn2();
};
void BaseClass::fn1(){
cout<<"BaseClass::fn1()"<<endl;
}
void BaseClass::fn2(){
Rectangle rectangle(a,b);
Circle circle(r);
fun(&rectangle);
fun(&circle);
i++;
}while(i<n);
return 0;
}
8-7
// Note:Your choice is C++ IDE
class Point{
public:
Point(int xx=0,int yy=0){
x=xx;
y=yy;
}
~Point(){}
void getXY(){cout<<"("<<x<<","<<y<<")"<<endl;}
friend Point operator+(Point p1,Point p2);
}
Point& Point::operator--(){
x--Байду номын сангаас
y--;
return *this;
}
Point Point::operator--(int){
Point old=*this;
--(*this);
return old;
}
int main(){
Point myPoint(3,4);
int k;
};
class Circle:public Space{
public:
Circle(double r){
R=r;
}
void getArea(){
cout<<"圆的面积为: PI*R*R= "<<PI*R*R<<endl;
}
void getPerim(){
virtual void getArea()=0;
virtual void getPerim()=0;
~Space(){cout<<"destructor is called"<<endl;}
};
class Rectangle:public Space{
public:
Rectangle(int a,int b){
cout<<"p1=";p1.getXY();