I'm trying to read in a value and convert it into a number for use in the ageJudge function. I've tried a number of different approaches but keep getting type conversion errors. This is literally my first Haskel program - so please don't laugh... module Main where ageJudge :: (Integral a) => a -> String ageJudge age | age >= 40 = "You're too old!" | age <= 30 = "Your too young" | otherwise = "Not in the programming age range.." main = do putStrLn "What is your name?" name <- getLine putStrLn ("Nice to meet you, " ++ name ++ "!") putStrLn "What is your age?" age <- getLine let inpIntegral = (read age)::Double -- let decission = ageJudge (read inpIntegral)::Integral putStrLn ("We decided!") -- putStrLn ("We decided:\n" ++ show(1) ++ "!") -- ageJudge inpIntegral