Program to Print Fibonacci Series without Recursion 

#include <stdio.h>

main()

{

int x, y, z, n, i;

x=0; y=1;

printf("\nEnter value of n: ");

scanf("%d", &n);

printf("\nFibonacci Series:\n\n");

printf("\n%d", x);

printf("\t%d", y);

for( i=0; i<n-2; i++)

{

z = x+y;

printf("\t%d", z);

x = y;

y = z;

}

getch();

}