#include <iostream>
using namespace std;

class Copy
{
   int var, fact;
   
   public:
        Copy(int temp)
        {
          var = temp;
        }
        Copy(const Copy &obj)  // the copy constructor
        {
           cout << "In copy constructor ..." << endl;
         //  But there isn't any code in here to actually do a copy      
        }
        double calculate()
         {
           fact=1;
           for(int i=1;i<=var;i++)
             {
               fact = fact * i;
              }
               return fact;                           
           }
};

int main()
{
    int n;
    cout<<"Enter the Number : ";
    cin>>n;
    
    Copy obj = Copy(n);
    Copy cpy = obj; // Copy Constructor is invoked automatically

    Copy cpy2(2);
    cpy2=obj; // Assignment Operator is invoked

    cout<<"\n Original Factorial is: "<<obj.calculate();
    cout<<"\n Copy Factorial is not working: "<<cpy.calculate();
    cout<<"\n Assignment Factorial is: "<<cpy2.calculate();
    
    getchar();
    getchar();
    return 0;
}