阅读程序3

#include <iostream>using namespace std;class Wages{    double base;    double bonus;    double tax;public:    Wages(double cBase,double cBonus,double cTax):base(cBase),bonus(cBonus),tax(cTax){}    double getPay()const;    Wages operator+(Wages w)const;};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 w1(2000,500,100),w2(5000,1000,300);    cout<<(w1+w2).getPay()<<endl;    return 0;}