I love factorials

i <3 Factorials

// A Factorial in C++
#include <iostream>
using namespace std;

long factorial (long fac)
{
  if (fac > 1)
   return (fac * factorial (fac-1));
  else
   return 1;
}

int main ()
{
  long number = 9;
  cout << number << "! = " << factorial (number);
  return 0;
}