Using for

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

#include <stdio.h>

/*an equivalent loop using 'for' instead of 'while'*/
int main(void)
  {
  register int count;
  int n;
  long factorial;
  printf("Compute the factorial of what number? ");
  scanf("%d", &n);
  for(factorial = 1L, count = 1; count <= n; count++)
    {
    factorial *= count;
    }
  printf("%d! = %ld\n", n, factorial);
  return 0;
  }