cpp2.cpp

一、教学目的： 能理解C++中运算符重载的需要性

#include<iostream.h>
class A
 {
    public:
       A(double t,double r){ Total=t;Rate=r;}
       friend double Count(A &a);
    private:
       double Total,Rate;
 };
 double Count(A &a)
 {
   a.Total+=a.Rate*a.Total;
   return a.Total;
 }
 void main()
  {
     A  a1(1000.0,0.035),a2(1200.0,0.03);
     cout<<Count(a1)<<','<<Count(a2)<<endl;
  }