countpp1.cpp

来自「本课程主要介绍面向对象程序设计的方法和c++语言的基本概念。以c++语言中的面向」· C++ 代码 · 共 36 行

// countpp1.cpp
// increment counter variable with ++ operator
#include <iostream>
using namespace std;
////////////////////////////////////////////////////////////////
class Counter
   {
   private:
      unsigned int count;              //count
   public:
      Counter() : count(0)             //constructor
         {  } 
      unsigned int get_count()         //return count
         { return count; }
      void operator ++ ()  	         //increment (prefix)
         {
         ++count;
         }
   };
////////////////////////////////////////////////////////////////
int main()
   {
   Counter c1, c2;                     //define and initialize

   cout << "\nc1=" << c1.get_count();  //display
   cout << "\nc2=" << c2.get_count();

   ++c1;			       //increment c1
   ++c2;			       //increment c2
   ++c2;			       //increment c2

   cout << "\nc1=" << c1.get_count();  //display again
   cout << "\nc2=" << c2.get_count() << endl; 
   return 0;
   }