例4.2.cpp

铁道出版社出版的C++的习题源代码

#include<iostream.h>
class Complex
{
public:
     Complex(){real=0;imag=0;}
     Complex(double r,double i){real=r;imag=i;}
     Complex operator+(Complex &c2);
     void display();
private:
     double real;
     double imag;
};
Complex Complex::operator+(Complex &c2)
{   
     Complex c;
     c.real=real+c2.real;
     c.imag=imag+c2.imag;
     return c;
}
void Complex::display()
{   
     cout<<"("<<real<<","<<imag<<"i)"<<endl;
}
void main()
{     
     Complex c1(3,4),c2(5,-10),c3;
     c3=c1+c2;
     cout<<"c1=";c1.display();
     cout<<"c2=";c2.display();
     cout<<"c1+c2=";c3.display();
}