Operator Precedence


The following table lists the order of precedence of all generic operators.

highest
+ (unary) - (unary)
() [] ++ --
! ~
@ # $
* / %
+ -
<< >>
< > <= >=
== !=
&
^
|
&&
||
=
lowest

Knowing the precedence of operators is very important when forming expressions. Parentheses can be used to alter the meaning of expressions. For example, consider the following code fragment.

a = 10 b = 20 c = 2
d = a * b + c                 // d is 202
e = a * (b + c)               // e is 220

In the calculation of d, the multiplication takes precedence over addition and is therefore performed first. When parentheses are used to sum b and c then multiply by a, a different result is obtained.