When an expression contains multiple operators, such as a + b * c >> 8, the operators are grouped based on rules of precedence. For instance, the meaning of that expression is to multiply b by c, right shift the result by 8, then add that result to a. The rules of operator precedence determine the order of this expression.

The following is a list of types of expressions, presented in order of highest precedence first. Sometimes two or more operators have equal precedence; all those operators are applied from left to right unless stated otherwise.

1. Operators with operands enclosed in separators such as parenthesis, and field access operator ->.
2. Unary operators: +, -, !, ~, &.
3. Multiplication, division, and modular division: *, /, %.
4. Addition and subtraction expressions: +, -. These expressions are evaluated right-to-left.
5. Bitwise shifting expressions: <<, >>.
6. Greater-than, less-than, greater-than-or-equal-to, and less-than-or-equal-to expressions: >, <, >=, <=.
7. Equal-to and not-equal-to expressions: ==, !=.
8. Bitwise TEST expressions: \.
9. Bitwise AND expressions: &.
10. Bitwise XOR expressions: ^.
11. Bitwise OR expressions: |.
12. Logical AND expressions: &&. These expressions are evaluated right-to-left.
13. Logical OR expressions: ||. These expressions are evaluated right-to-left.
14. Conditional expressions: ?:.