/*
 *  * An application that illustrates calling the factorial function defined elsewhere.
 *   */

#include <stdio.h>
#include <inttypes.h>

uint64_t factorial(unsigned n);

int main() 
{ printf("Find N! Enter value - Negative input quits\n");
  int n;
  do {
    printf("Enter N >");
    scanf("%d",&n);
    if (n>0) 
      printf("factorial(%2u) = %lu\n", n, factorial(n));
  } while (n>0);
  return(0);
}