writing a function to build a list of ints from user input

I'm trying to write a function that builds a list from user input. This is what I've come up with so far. --a program that makes a list of numbers from user input makeList :: IO [Int] makeList = do s <- getLine if read s /= 0 then return (read s:makeList) else return [] However it fails with the following error: Couldn't match `[a]' against `IO [Int]' Expected type: [a] Inferred type: IO [Int] In the second argument of `(:)', namely `makeList' In the first argument of `return', namely `((read s) : makeList)' It's trying to match a list, [a], with type IO [Int]. This causes it to fail. How do I get around this? -- sashan http://sashan.netfirms.com --------------------------- Brain: Here we are, Pinky--at the dawn of time! Pinky: Narf, Brain. Wake me at the noon of time.