#include <stdio.h>
// A program to compute the factorial of n 
int main ( ) 
{
  int i, n, prod;
  printf ("Enter n.\n") ;
  scanf ("%d", &n) ;
  prod = 1;
  for (i=1; i<=n; i++)
    {
      prod = prod * i;
    }
  printf ("Factorial %d = %d\n", n, prod) ;
  return 0;
}