Haskell: putChar: Write a character to the standard output

Haskell provides putChar function, which writes a character to standard output.

Prelude> :t putChar

putChar :: Char -> IO ()

Sample.hs

main = do
        putStrLn "Enter (M) If you are male, else (F) "
        gender <- getChar
        putChar gender

$ ghc Sample.hs
Linking Sample ...
$ ./Sample
Enter (M) If you are male, else (F) 
M
M

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