Using while (counting up)

/*factorial.c - Copyright (c) 1998 Matthew Belmonte.*/

/*the same, but counting up to n instead of down to 0*/
int main()
  {
  register int count;
  int n;
  long factorial;
  printf("Compute the factorial of what number? ");
  scanf("%d", &n);
  factorial = 1L;
  count = 1;
  while(count <= n)
    factorial *= count++;
  printf("%d! = %ld\n", n, factorial);
  return 0;
  }