C++：运算符重载示例

#pragma once
//利用成员运算符重载实现两个复数的加法
class Complex
{
public:
	Complex();
	Complex(double a, double b);
	Complex operator +(Complex &rc);		//重载运算符
	void Display();
	~Complex();
private:
	double m_real;		//实部
	double m_imag;      //虚部
};

#include "stdafx.h"
#include "Complex.h"
#include 
using namespace std;

Complex::Complex()
{
	m_real = 0;
	m_imag = 0;
}
Complex::Complex(double a, double b)
{
	m_real = a;
	m_imag = b;
}
Complex Complex::operator +(Complex &rc)		//重载运算符
{
	Complex c;
	c.m_real = m_real + rc.m_real;		//rc为右操作数
	c.m_imag = m_imag + rc.m_imag;
	return c;
}
void Complex::Display()
{
	cout << "(" << m_real << "," << m_imag << "i)" << endl;

}

Complex::~Complex()
{
}

// ComplexExample.cpp : 定义控制台应用程序的入口点。
//

#include "stdafx.h"

#include "Complex.h"
#include 
using namespace std;

int _tmain(int argc, _TCHAR* argv[])
{
	Complex c1(1, 2), c2(3, 4), c3;
	c3 = c1 + c2;		//等价于c3 = c1.operator +(c2)
	cout << "c1 =";  c1.Display() ;
	cout << "c2 =";  c2.Display();
	cout << "c3 =";  c3.Display();
	getchar();
	return 0;
}

运行结果：