static functions and ID numbers for objects : static « Class « C++






  1. C++
  2. Class
  3. static

static functions and ID numbers for objects

  
#include <iostream>  
using namespace std;  
class gamma  {  
   private:  
   static int total;        
      int id;                  
   public:  
      gamma(){  
         total++;              
         id = total;           
      }  
      ~gamma(){  
         total--;  
         cout << "Destroying ID number " << id  << endl;  
      }  
      static void showtotal(){  
         cout << "Total is " << total << endl;  
      }  
      void showid(){  
         cout << "ID number is " << id << endl;  
      }  
};  
int gamma::total = 0;
int main(){  
   gamma g1;  
   gamma::showtotal();  
  
   gamma g2, g3;  
   gamma::showtotal();  
  
   g1.showid();  
   g2.showid();  
   g3.showid();  
   return 0;  
}








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