C Program for Fibonacci Series Using for Loop

#include<stdio.h>
#include<conio.h>

int main ()
{

  int first = 0, second = 1, third, i, n;

  printf ("Enter the length of the fibonacci series \n");

  scanf ("%d", &n);

  printf ("The Fibonacci series is :\n");

  printf ("%d%d", first, second);

  for (i = 2; i <= n; i++)

    {

      third = first + second;

      printf ("%d ", third);

      first = second;

      second = third;

    }

  return 0;

}

 OUTPUT:

Enter the length of the fibonacci series                                                                                               
10                                                                                                                                    
The Fibonacci series is :                                                                                                              
011 2 3 5 8 13 21 34 55