C++ - Operator Precedence
C++ Operator
2023-09-14 09:10:22 时间
The following table lists the precedence and associativity of C++ operators. Operators are listed top to bottom, in descending precedence.
Precedence | Operator | Description | Associativity |
---|---|---|---|
1 | :: |
Scope resolution | Left-to-right |
2 | ++ -- |
Suffix/postfix increment and decrement | |
type() type{} |
Function-style type cast | ||
() |
Function call | ||
[] |
Array subscripting | ||
. |
Element selection by reference | ||
-> |
Element selection through pointer | ||
3 | ++ -- |
Prefix increment and decrement | Right-to-left |
+ - |
Unary plus and minus | ||
! ~ |
Logical NOT and bitwise NOT | ||
(type) |
C-style type cast | ||
* |
Indirection (dereference) | ||
& |
Address-of | ||
sizeof |
Size-of | ||
new ,new[] |
Dynamic memory allocation | ||
delete ,delete[] |
Dynamic memory deallocation | ||
4 | .* ->* |
Pointer to member | Left-to-right |
5 | * / % |
Multiplication, division, and remainder | |
6 | + - |
Addition and subtraction | |
7 | << >> |
Bitwise left shift and right shift | |
8 | < <= |
For relational operators < and ≤ respectively | |
> >= |
For relational operators > and ≥ respectively | ||
9 | == != |
For relational = and ≠ respectively | |
10 | & |
Bitwise AND | |
11 | ^ |
Bitwise XOR (exclusive or) | |
12 | | |
Bitwise OR (inclusive or) | |
13 | && |
Logical AND | |
14 | || |
Logical OR | |
15 | ?: |
Ternary conditional | Right-to-left |
= |
Direct assignment (provided by default for C++ classes) | ||
+= -= |
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 | ||
16 | throw |
Throw operator (for exceptions) | |
17 | , |
Comma | Left-to-right |
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