c++复习之重载运算符

2019-11-06 07:35:30

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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;}

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