c++复习之重载运算符

c++复习之重载运算符

重载运算符是c++实现多态的方法之一（另外是虚函数动态绑定和函数名重载），需要好好掌握。

/* * Author:  ktmzgl * Created Time:  2017/3/4 16:27:02 * File Name: F:\Vim\code\Tryoperator.cpp */#include <iostream>#include <cstdio>#include <cstdlib>#include <cstring>#include <cmath>#include <algorithm>#include <string>#include <vector>#include <stack>#include <queue>#include <set>#include <time.h>using namespace std;const int maxint = -1u>>1;class Try{    public:    int a;    string s;    Try(){}    Try(int aa,string ss):a(aa),s(ss){}    friend istream & operator >>(istream & in , Try &t);    friend ostream & operator <<(ostream & out,Try &t);    Try  operator +(const Try &t){    return Try(a+t.a,s+t.s);}    friend bool operator <(Try &t1,Try &t2) ;};istream & operator >>(istream & in , Try &t) {    in>>t.a>>t.s;    return in;}ostream & operator <<(ostream & out,Try &t){    out<<t.a<<" "<<t.s<<endl;}bool operator <(Try &t1,Try &t2){    return t1.a<t2.a;}int main(){    Try tmp;    cin>>tmp;    cout<<tmp;    Try tmp1(2,"ff");    Try tmp2=tmp+tmp1;    cout<<tmp2;    if(tmp<tmp2)        cout<<"tmp小于tmp2"<<endl;    return 0;}