运算符重载_继承_多态_模版

1：运算符重载
运算符重载_继承_多态_模版
  1 RMB.h
  2 #ifndef RMB_H
  3 #define RMB_H
  4 
  5 #include <bits/stdc++.h>
  6 using namespace std;
  7 class RMB
  8 {
  9     public:
 10         RMB();
 11         RMB(int, int);
 12         virtual ~RMB();
 13         void display()
 14         {
 15             cout << "RMB:" << yuan << ".";
 16             if(jf < 10)
 17             {
 18                 cout << "0";
 19             }
 20             cout << jf << endl;
 21         }
 22         friend RMB operator+(const RMB&, const RMB&);//作为友元函数的元素符重载
 23         friend bool  operator>(const RMB&, const RMB&);
 24         int Getjf() { return jf; }
 25         void Setjf(int val) { jf = val; }
 26         int Getyuan() { return yuan; }
 27         void Setyuan(int val) { yuan = val; }
 28         RMB operator+(const RMB& s)//作为成员函数的运算符重载
 29         {
 30             int c = this->jf + s.jf;
 31             int d = this->yuan + s.yuan;
 32             return RMB(c,d);
 33         }
 34     protected:
 35 
 36     private:
 37         int jf;
 38         int yuan;
 39 };
 40 
 41 #endif // RMB_H
 42 RMB.cpp
 43 /*
 44  * 文件名：
 45  * 描  述：
 46  * 作  者：
 47  * 时  间：
 48  * 版  权：
 49  */#include "RMB.h"
 50 #include <bits/stdc++.h>
 51 using namespace std;
 52 RMB::RMB()
 53 {
 54     cout << "RMB construction" << endl;
 55 }
 56 RMB::RMB(int _yuan, int _jf):yuan(_yuan),jf(_jf)
 57 {
 58     cout << "RMB(int, int) construction" << endl;
 59 }
 60 RMB::~RMB()
 61 {
 62     cout << "RMB destruction"  << endl;
 63 }
 64 
 65 RMB operator+(const RMB& val1,const RMB& val2)//重载加运算符
 66 {
 67     int jf = val1.jf + val2.jf;
 68     int yuan = val1.yuan + val2.yuan;
 69     if(jf > 99){
 70         yuan++;
 71         jf-=100;
 72     }
 73     return RMB(yuan, jf);//局部对象不可以返回引用
 74 }
 75 
 76 bool operator>(const RMB& val1, const RMB& val2)//判断大小
 77 {
 78     bool ret =false;
 79     if(val1.yuan > val2.yuan)
 80     {
 81         ret = true;
 82     }else if(val1.yuan == val2.yuan){
 83         if(val1.jf > val2.jf)
 84             {
 85                 ret  = true;
 86             }
 87     }
 88     return ret;
 89 }
 90 
 91 main.cpp
 92 #include <iostream>
 93 #include "RMB.h"
 94 using namespace std;
 95 
 96 int main()
 97 {
 98 
 99     RMB rmb1(12,13);
100     RMB rmb2(9,9);
101     cout << (rmb1 > rmb2) << endl;
102     RMB rmb3 = rmb1 + rmb2;
103     cout << rmb3.Getyuan() << "  " << rmb3.Getjf() << endl;
104     rmb3.display();
105     return 0;
106 }
View Code