Created
May 27, 2015 12:32
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import System.Random | |
import Control.Monad(when) | |
main = do | |
gen <- getStdGen | |
askForNumber gen | |
askForNumber :: StdGen -> IO () | |
askForNumber gen = do | |
let (randNumber, newGen) = randomR (1,10) gen :: (Int, StdGen) | |
putStrLn "Which number in the range from 1 to 10 am I thinking of? " | |
numberString <- getLine | |
when (not $ null numberString) $ do | |
let number = read numberString | |
if randNumber == number | |
then putStrLn "You are correct!" | |
else putStrLn $ "Sorry, it was " ++ show randNumber | |
-- 乱数ジェネレータを更新しながら無限に繰り返す | |
askForNumber newGen |
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