learning-haskell/02-hello-haskell/2.6-parentheses-and-association.md

Exercises: Parentheses and Association

Exercise 1

The parentheses change the result here.

Multiplication (*) has a higher precedence, so is normally evaluated first. By adding parentheses to the addition (+), the order in which terms are evaluated is changed.

Exercise 2

The parenthese do not change the result.

Parentheses surround mulitplication, but multiplication has a higher precedence, so it does not change anything.

Exercise 3

The parentheses change the result here.

Division (\) has a higher precedence. By adding parentheses to the addition, the order in which terms are evaluated is changed.