Re: [Haskell-beginners] Simple IO problem

4 Mar 2010


      I am using windows XP, and both in cygwin and cmd, it first pauses to get
the input, and then displays the prompt and the hello message in the same
line.


c:\haskell>runghc Test.hs
test
Please Enter Your Name: Hello test

Ali
On Thu, Mar 4, 2010 at 1:13 PM, Deniz Dogan wrote:
...
...
Why doesn't this work the way it's supposed to, or the way it's
intuitively
apparent from the code, that is, showing the prompt first, getting the
2010/3/4 Ali Razavi :
line
...
next, and printing the result finally?
main = do
        putStr "Please Enter Your Name: "
        name <- getLine
        putStrLn ("Hello " ++ name)
changing putStr with putStrLn rectifies it to the expected behavior, but
I
wonder why this version misbehaves. FWIW, I use ghc in cygwin.
Ali
FWIW using GHCi in standard Windows Vista, this works like it should.
--
Deniz Dogan