#include <stdio.h>
#include <stdlib.h>

/* Retorna o fatorial de n */

int fatorial(int n) {
  int fat = 1, i;

  if (n == 0)
    fat = 1;
  else{
     for (i = n; i>1; i--) 
          fat = fat * i;
  }


   return fat;
}

int main() {
  int n, f;
  
  printf("Digite n: ");
  scanf("%d", &n);  
  f = fatorial(n);
  printf("Resultado final = %d\n", f);
  
  system("pause");
  return 0;
}