-- Single line comments start with -- and go to the line's end
{-
  Multi-line comments
  look like this.
-}
foo a b c = a + b * c

main =
    let
        bar = foo 1 -- creates the function bar b c = 1+b*c
        baz = bar 2 -- creates the function baz c = 1+2*c
        res = baz 3 -- computes the result res = 1+2*3
    in
        putStrLn(show(res))