aula-23-if-then-else-case.hs

if_par :: Int -> Bool
if_par n = if (mod n 2 == 0) then True else False

case_par :: Int -> Bool
case_par n = case (mod n 2 == 0) of
	True -> True
	False -> False

guarda_par:: Int -> Bool
guarda_par n
	| (mod n 2 == 0) = True
	| otherwise = False