C++程序设计教程--面向对象分册(郑秋生)完整答案

class CBox
{
public :
CBox(double l=0,double w=0,double h=0);
double area();
double volume ();
private :
double lengh;
double width;
double high;
};
CBox::CBox(double l,double w,double h)
#include <iostream.h>
class person
{
public:
person(int n,char* nam,char s)
{
num=n;
strcpy(name,nam);
sex=s;
cout<<"Constructor called."<<endl;
}
~person( )
{
cout<<"Destructor called."<<endl;
CLine line1(point1,point2);
CLine line2(2,3,8,12);
line1.DrawLine ();
line2.DrawLine ();
line2.move(point3,point4);
line2.DrawLine ();
line2=line1;
line2.DrawLine ();
}
void Linedel()
{
cout<<"delete line"<<endl;
}
void move(CPoint &x,CPoint &y)
{
cout<<"move line"<<endl;
p1=x;
p2=y;
}
private :
CPoint p1,p2;
};
void main()
{
CPoint point1(1,5),point2(5,8),point3(20,30),point4(40,50);
{
x=a;
y=b;
}
CPoint(CPoint & p)
{
x=p.x;
y=p.y;
}
void print()
{
cout<<"("<<x<<","<<y<<")";
}
private :
double x,y;
};
class CLine
{
public:
CLine(double x1=0,double y1=0,double x2=0,double y2=0):p1(x1,y1),p2(x2,y2)
{
CBox box1(4,5,6);
cout<<box1.area()<<endl;
cout<<box1.volume()<<endl;
}
5.2
#include <iostream>
using namespace std;
class CPoint
{
public :
CPoint(double a=0,double b=0)
{
}
CLine(CPoint x,CPoint y):p1(x),p2(y)
{
}
CLine(CLine &lin)
{
p1=lin.p1;
p2=lin.p2;
}
void DrawLine()
{
cout<<"Line form";
p1.print();
cout<<"to";
p2.print();
cout<<endl;
{
lengh=l;
width=w;
high=h;
}
double CBox::area()
{
return 2*(lengh*width+lengh*high+width*high);
}
double CBox::volume ()
{
return lengh*width*high;
}
void main()
第1章类和对象
一、选择题
1.C 2.B 3.C 4.A 5.C
6.A 7.C8 C9A10 C
二、阅读题
1．x=2,y=3
2．x=2,y=3
x!=y
3．
Cstatic::va1=0
cs1.vaI=1
cs2.val=2
cs1.val=4
cs2.vaI=4
四、改错题
#include <string.h>
{
person s1(10010,"'Wang_li",'f');
s1.display( );
person s2(10011,"Zhang_fun",'m');
s2.display( );
return 0;
}
五、编程题
5．1
#include <iostream>
using namespace std;
void CComplex::Print()//显示复数值
{
cout << "(" << real << "," << imag << ")" << endl;
}
CComplex add(CComplex &x,CComplex &y) //普通函数完成两个数的加法，对象作为函数参数,
{
return CComplex(x.GetReal() +y.GetReal() ,x.GetImag ()+y.GetImag ());
}
void display( )
{
cout<<"num: "<<num<<endl;
cout<<"name: "<<name<<endl;
cout<<"sex: "<<sex<<endl<<endl;
}
private:
int num;
char name[10];
char sex;
};
int main( )
double GetImag();
void Print();
private:
double real;
double imag;
};
CComplex::CComplex (double r=0.0, double i=0.0)
{
real = r;
imag = i;
cout<<"调用两个参数的构造函数"<<endl;
}
CComplex::CComplex (CComplex &c)//复数类的拷贝构造函数定义
{
real = c.real;
imag = c.imag;
cout<<"调用拷贝构造函数"<<endl;
}
doublቤተ መጻሕፍቲ ባይዱ CComplex::GetReal(){return real;}
double CComplex::GetImag(){return imag;}
line1.Linedel ();
}
5.3
#include <iostream>
using namespace std;
class CComplex
{
public:
CComplex(double, double);
CComplex(CComplex &c);//复数类的拷贝构造函数声明
double GetReal();