#include <stdio.h>

unsigned int factorial(unsigned int x) {
   unsigned int result = 1;
   
   while (x > 0) {
      result = result * x;
      x--;
   }
   return result;
}

/* === */

#include <stdio.h>

unsigned int factorial(unsigned int x) {
   unsigned int result = 1;
   while (x > 0) {
      result *= x--;
   }
   return result;
}