// Factorial - Recursive function
import Std::Io::{PrintLine, PrintInt};


func Factorial(n: int) -> int {
    if n <= 1 {
        return 1;
    }
    return n * Factorial(n - 1);
}

func Main() -> int {
    PrintLine("Factorials:");
    
    var i: int = 1;
    while i <= 10 {
        let fact: int = Factorial(i);
        PrintInt(i);
        PrintLine("! = ");
        PrintInt(fact);
        PrintLine("");
        i = i + 1;
    }
    
    return 0;
}