Thread: Problem with factorials

This is my program. I get no compiling errors but the output is way to high.

Code:

// My first factorial program
#include <iostream>
using namespace std;
int main ()
{
    int start = 0;
    while (start == 0)
    {
    int N;
    int X;
    char choice;
    unsigned long int answer;
    cout << "I am the Factorial program.\n Which number's factorial do you want?\n";
    cin >> N;
    cout << "The factorial of "; cout << N << " is "; cout << answer << endl;
    answer = N;
    X = 1;
    while ( N - X > 1)
    {
          answer = answer * (N - X);
          X = X + 1;
    }
    cout << "This is the end of this program.\n Do you wish to use this program again ( yes (y) or no (n))?\n";
    cin >> choice;
    if (choice == 'y' || choice == 'Y')
    {
    }
    if (choice == 'n' || choice == 'N')
    {
    start = 1;
    }
}

int end;
cin >> end;
return EXIT_SUCCESS;

}

You're printing the answer before computing it.

ok, thank you very much