strlen in Hutton 2ed 10.5 Derived primitives => run on Windows 7 Haskell Platform 8.2.2 strlen :: IO () strlen = do putStr "Enter a string: " xs <- getLine putStr "The string has " putStr (show (length xs)) putStr " characters" =================================================== GHCi, version 8.2.2: http://www.haskell.org/ghc/ :? for help [1 of 1] Compiling Main ( C:\strlen.WhiteSpaced.hs, interpreted ) C:\strlen.WhiteSpaced.hs:2:14: error: Parse error in pattern: putStr Possibly caused by a missing 'do'? | 2 | strlen = do putStr "Enter a string: " | ^^^^^^^^^^^^^^^^^^^^^^^^^^^... Failed, no modules loaded. Prelude> ================================================== strlen :: IO () strlen = do {putStr "Enter a string: "; xs <- getLine; putStr "The string has "; putStr (show (length xs)); putStr " characters"} ================================================= GHCi, version 8.2.2: http://www.haskell.org/ghc/ :? for help [1 of 1] Compiling Main ( C:\strlen.Bracesed.hs, interpreted ) Ok, one module loaded. *Main> -- Sent from: http://haskell.1045720.n5.nabble.com/Haskell-Haskell-Cafe-f3074699.html