>运算符重载

#include<iostream>
using namespace std;
class stu
{
    private:
        int id;
        string name;
    public:
        friend stu operator>(stu ,stu);
        void set()
        {
            int i;
            cout<<"id=";cin>>i;
            id=i;
            string n;
            cout<<"name=";cin>>n;
            name=n;
        }
        void show()
        {
            cout<<id<<'\t'<<name<<endl;
        }
};
stu operator>(stu m1,stu m2)
{
    if (m1.id>m2.id)
        return m1;
    else
        return m2;
}

int main()
{
    stu A;stu B;
    A.set();B.set();
    cout<<"id"<<'\t'<<"name"<<endl;
    (A>B).show();
}

输出结果为：

id=123
name=aaa
id=321
name=bbb
id	name
321	bbb