Fibonacci Series Using Op. Overloading

//A program to generatea fibonacci series by overloading a postfix operator//

//generation of the series of fibonacci number

//using operator overloading of postfix incrementer

#include  <iostream.h>

#include<conio.h>

class fibonnaci

{

   private :

      unsigned long int f0,f1,fib;

   public :

      fibonnaci();

//    fibonnaci operator(); //constructor

      fibonnaci operator++(int );

      void display();

};

fibonnaci :: fibonnaci ()

{

   f0=0;

   f1=1;

   fib=f0+f1;

}

void fibonnaci:: display()

{

   cout << fib << '\t';

}

fibonnaci fibonnaci :: operator++ (int x)

{

   f0=f1;

   f1=fib;

   fib=f0+f1;

   return *this;

}

void main()

{

   clrscr();

   fibonnaci obj;

   int n;

   cout << " how many fibonnaci numbers are to be";

   cout << "displayed? \n";

   cin >> n;

   for (int i = 0; i <= n-1; ++i)

{

      obj.display();

      obj++;

}

getch();

}