On 15 Sep 2008, at 12:51 pm, Daniel Fischer wrote:
Am Montag, 15. September 2008 02:24 schrieb Cetin Sert:
Hi why do I get?
Buffering. For compiled programmes, stdin and stdout are line-
buffered by
default, so the output doesn't appear until the program finishes.
Either put
hSetBuffering stdout NoBuffering
at the top of main or, better IMO,
insert a
hFlush stdout
into ask before the readLn.
And in eval, putStrLn would be better, I think.
Is this the problem we've had before, where the example in the
Haskell 98 Report could not possibly work unless Haskell followed
the same rule as C (read from stdin *automatically* flushes stdout),
and the example works in several other Haskell systems, but not in
GHC? Or is this a different problem?
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