31 lines
759 B
Haskell
31 lines
759 B
Haskell
deposit value account = account + value
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withdraw value account = account - value
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eligible :: (Num a,Ord a) => a -> Bool
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eligible account =
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let account1 = deposit 100 account in
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if (account1 < 0)
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then False
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else
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let account2 = withdraw 200 account1 in
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if (account2 < 0)
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then False
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else
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let account3 = deposit 100 account2 in
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if (account3 < 0)
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then False
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else
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let account4 = withdraw 300 account3 in
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if (account4 < 0)
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then False
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else
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let account5 = deposit 1000 account4 in
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if (account5 < 0)
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then False
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else
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True
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main = do
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print $ eligible 300 -- True
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print $ eligible 299 -- False
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