Factorial

// Apple Xcode


#include <stdio.h>

unsigned long the_fact(int the_number)
{
    if (the_number > 1)
    {
        return the_number * the_fact(the_number - 1);
    }
    else
    {
        return 1;
    }
}

int main (int argc, const char * argv[])
{
    // factorial
    int the_number = 0;
    int the_result;

    printf("Introduza um numero: ");
    scanf("%d", &the_number);

    the_result = the_fact(the_number);
    printf("%d! = %d", the_number, the_result);

    return 0;
}