#include <stdio.h>

long fakul(int n)
{
 if(n)
   return n * fakul(n-1);

 return 1;
}

int main()
{
 printf("Fakultät von 5 = %ld\n",fakul(5));
 printf("Fakultät von 9 = %ld\n",fakul(9));

 return 0;
}