5
Expressions
expression: A data value or set of operations to compute a value.
Examples: 1 + 4 * 3
42
Arithmetic operators we will use:
+ - * / addition, subtraction/negation, multiplication, division
% modulus, a.k.a. remainder
** exponentiation
precedence: Order in which operations are computed.
* / % ** have a higher precedence than + -
1 + 3 * 4 is 13
Parentheses can be used to force a certain order of evaluation.
(1 + 3) * 4 is 16
