operator

例1，最简单的情况，重载==，以判断两个对象是否相等

#include "stdafx.h"
#include <iostream>
using namespace std;

class person
{
private:
    long id;
public:
    person(long id)
    {
        this->id = id;
    }
    bool operator == (const person& person) const
    {
        if (this->id == person.id)
            return true;
        return false;
    }
};

int main_20180715_0216()
{
    person p1(1);
    person p2(1);
    cout << "p1 == p2 ? " << (p1 == p2) << endl;
    cin.get();
    return 0;
}