module Scratch where
neg :: Integer -> Integer
neg x = (-x)
sumTo :: Integer -> [Integer] -> Integer
sumTo n nums = sumToAcc 0 n nums
sumTo20 :: [Integer] -> Integer
sumTo20 nums = sumToAcc 0 20 nums
sumToAcc :: Integer -> Integer -> [Integer] -> Integer
sumToAcc acc _ [] = acc
sumToAcc acc n (x:xs)
| acc >= n = acc
| otherwise = sumToAcc (acc + x) n xs
