C語言運算符優先級
Precedence | Operator | Description | Associativity |
---|---|---|---|
1 | ++ -- |
Suffix/postfix increment and decrement | Left-to-right |
() |
Function call | ||
[] |
Array subscripting | ||
. |
Structure and union member access | ||
−> |
Structure and union member access through pointer | ||
(type){list} |
Compound literal(C99) | ||
2 | ++ -- |
Prefix increment and decrement | Right-to-left |
+ − |
Unary plus and minus | ||
! ~ |
Logical NOT and bitwise NOT | ||
(type) |
Type cast | ||
* |
Indirection (dereference) | ||
& |
Address-of | ||
sizeof |
Size-of | ||
_Alignof |
Alignment requirement(C11) | ||
3 | * / % |
Multiplication, division, and remainder | Left-to-right |
4 | + − |
Addition and subtraction | |
5 | << >> |
Bitwise left shift and right shift | |
6 | < <= |
For relational operators < and ≤ respectively | |
> >= |
For relational operators > and ≥ respectively | ||
7 | == != |
For relational = and ≠ respectively | |
8 | & |
Bitwise AND | |
9 | ^ |
Bitwise XOR (exclusive or) | |
10 | | |
Bitwise OR (inclusive or) | |
11 | && |
Logical AND | |
12 | || |
Logical OR | |
13 | ?: |
Ternary conditional | Right-to-Left |
14 | = |
Simple assignment | |
+= −= |
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 | ||
15 | , |
Comma | Left-to-right |