#include <iostream.h>
#include <conio.h>

//Returns the factorial of n
int Factorial(int n) {
//Loop variable
int i;
int Result;

//Initialize the result
Result = 1;

//Now multiply by 1 .. n
for (i = 1; i < n; i++)
Result *= i;

return Result;
}

void main() {
int n;

//Get a value
cout << "Welcome to the oh-so-leet Grandfather price calculator" << endl;
cout << "How many Grandfathers are you planning on selling?" << endl;
cin >> n;

//Print the factorial
cout << Factorial(n);

//Now pause until user hits a key
cout << "\nYou would obviously get $" << Factorial(n) << " dollars out of that Ebay sale" << endl;
cout << "Remember that Chruser owns you" << endl;
while (!kbhit());
}

"Stephen Wolfram is the creator of Mathematica and is widely regarded as the most important innovator in scientific and technical computing today." - Stephen Wolfram