作用：重载关系运算符，可以让两个自定义类型对象进行对比操作

代码如下：

#include <iostream>
using namespace std;
#include <cstring>
//重载关系运算符class Person {public:Person(string name, int age) {m_Name = name;m_Age = age;}bool operator==(Person &p) {if (this->m_Name == p.m_Name && this->m_Age == p.m_Age) {return true;}return false;}bool operator!=(Person &p) {if (this->m_Name == p.m_Name && this->m_Age == p.m_Age) {return false;}return true;}string m_Name;int m_Age;
};void test01() {Person p1("Tom", 18);Person p2("Tom", 18);if (p1 == p2) {cout << "p1 和 p2是相等的" << endl;} else {cout << "p1 和 p2是不相等的" << endl;}if (p1 != p2) {cout << "p1 和 p2是不相等的" << endl;} else {cout << "p1 和 p2是相等的" << endl;}
}int main() {test01();return 0;
}