运算符重载

1.运算符重载的方法

• 运算符重载的方法是定义一个重载运算符的函数，其实质是函数的重载。
• 重载运算符的函数一般格式如下：
  函数类型 operate 运算符名称 (形参表)
  {对运算符的重载处理}

#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=c1+c2;
cout<<"c1=";c1.display
}