Re: Silly IO problem

I don't see your problem. (I've put your code into the file Tac.hs) Christian maeder@turing:~/haskell/examples> ghc --make -o tac Tac.hs Chasing modules from: Tac.hs Compiling Main ( Tac.hs, Tac.o ) Linking ... maeder@turing:~/haskell/examples> ./tac 5 10.0 skaller wrote:

This code doesn't work: ------------------------ import System(getArgs)

main = do n <- getArgs >>= readIO.head putStrLn (show (tak (3*n) (2*n) n))

tak :: Float -> Float -> Float -> Float tak x y z | y>=x = z | otherwise = tak (tak (x-1) y z) (tak (y-1) z x) (tak (z-1) x y) -------------- It prints n, rather than tak(3n,2n,n). Can someone give me the right encoding please?