set i to 0
set toGuess to random_int(0, 100)
while 1 do
    set guessed to input_number()
    if i > 20 then
        # do you really want to continue?
        break
    end
    if guessed = toGuess then
        # success
        print_ascii(83)
        break
    end
    if guessed < toGuess then
        # too low
        print_ascii(76)
    end
    if guessed > toGuess then
        # too high
        print_ascii(72)
    end
    set i to i+1
end