C Operator Precedence
The following table lists the precedence and associativity of C operators. Operators are listed top to bottom, in descending precedence.
||Suffix/postfix increment and decrement||Left-to-right|
||Structure and union member access|
||Structure and union member access through pointer|
||Prefix increment and decrement||Right-to-left|
||Unary plus and minus|
||Logical NOT and bitwise NOT|
||Multiplication, division, and remainder||Left-to-right|
||Addition and subtraction|
||Bitwise left shift and right shift|
||For relational operators < and ≤ respectively|
||For relational operators > and ≥ respectively|
||For relational = and ≠ respectively|
||Bitwise XOR (exclusive or)|
||Bitwise OR (inclusive or)|
||Assignment by sum and difference|
||Assignment by product, quotient, and remainder|
||Assignment by bitwise left shift and right shift|
||Assignment by bitwise AND, XOR, and OR|
When parsing an expression, an operator which is listed on some row will be bound tighter (as if by parentheses) to its arguments than any operator that is listed on a row further below it.
Operators that are in the same cell (there may be several rows of operators listed in a cell) have the same precedence and are grouped in the given direction. For example, the expression a=b=c is parsed as a=(b=c), and not as (a=b)=c because of right-to-left associativity. Note that this does not affect the evaluation order of the subexpressions a, b, and c.