#include <stdio.h>

int fib_r ( int );
int fib_i ( int );

int main ( void )
{
   int x;
   printf("Enter x: ");
   scanf("%d",&x);

   int f1 = fib_r(x);
   int f2 = fib_i(x);
   printf("fib recursive(%d) = %d\n",x,f1);
   printf("fib iterative(%d) = %d\n",x,f2);

   return 0;
}