// recursive
sub factorial(n)
    if n > 1 then return n * factorial(n - 1) else return 1 end if
end sub

//iterative
sub factorial2(n)
    local i, t

    t = 1
    for i = 1 to n
        t = t * i
    next
    return t
end sub

for n = 0 to 9
    print "Factorial(", n, ") = ", factorial(n)
next