C++走向远洋——47(第十二周、运算符重载基础程序、阅读)
*/ * Copyright (c) 2016,烟台大学计算机与控制工程学院 * All rights reserved. * 文件名:text.cpp * 作者:常轩 * 微信公众号:Worldhello * 完成日期:2016年5月14日 * 版本号:V1.0 * 问题描述:运算符重载基础程序 * 程序输入:无 * 程序输出:见运行结果 */ #include <iostream> using namespace std; class Sample { private: int x; public: Sample() {} Sample (int a){x=a;} void disp(){cout<<"x="<<x<<endl;} Sample operator+(Sample &s); }; Sample Sample:: operator+( Sample &s) { return Sample(x+s.x); } int main() { Sample obj1(20); Sample obj2(20); Sample obj3; obj3=obj1+obj2; obj3.disp(); return 0; }
运行结果:
#include<iostream> using namespace std; class Wages//“工资”类 { double base;//基本工资 double bonus;//奖金 double tax;//税金 public: Wages(double CBase, double CBonus,double CTax): base(CBase), bonus(CBonus),tax(CTax) {} double getPay()const;//返回应付工资额 Wages operator+(Wages w)const;//重载加法 }; double Wages::getPay()const { return base+bonus-tax; } Wages Wages::operator+(Wages w)const { return Wages(base+w.base, bonus+w.bonus,tax+w.tax); } int main() { Wages wl(2000,500,100),w2(5000,1000,300); cout<<(wl+w2).getPay()<<endl; return 0; }
#include<iostream> using namespace std; class Pair { int m; int n; public: Pair(int i, int j):m(i),n(j) {} bool operator >(Pair p) const; }; bool Pair::operator>(Pair p)const { if (m!=p.m) return m>p.m; return n>p.n; } int main() { Pair p1(3,4),p2(4,3), p3(4,5); cout<<(p1>p2)<<(p2>p1)<<(p2>p3)<<(p3>p2); return 0; }