C++之运算符的重载

#include <iostream>


using namespace std;


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;
}


int main()
{
Complex c1(3,4),c2(5,-10),c3;
c3=c2+c1;
cout<<"c1=";
c1.display();
cout<<"c2=";
c2.display();
cout<<"c1+c2=";
c3.display();


return 0;
}