Priority level |
Operator |
Name or meaning |
Use form |
Combination direction |
Description |
1 |
[] |
Array subscript |
array name [constant expression] |
Left to right |
|
() |
Parentheses |
(expression)/function name (formal parameter list) |
|
. |
Member selection (object) |
Object. Member name |
|
- |
Member selection (pointer) |
Object pointers, member names |
|
2 |
- |
Minus sign operator |
-expression |
Right to Left |
Monocular operator |
Type |
Forcing type conversions |
(data type) expression |
|
++ |
Self-increment operator |
+ + variable name/variable name + + |
Monocular operator |
-- |
Self-decrement operator |
--Variable name/variable name-- |
Monocular operator |
* |
Value operator |
* Pointer variable |
Monocular operator |
& |
Fetch address operator |
& Variable Name |
Monocular operator |
! |
Logical non-operator |
! An expression |
Monocular operator |
~ |
Bitwise inverse operator |
~ Expression |
Monocular operator |
sizeof |
Length operator |
sizeof (expression) |
|
3 |
/ |
Except |
An expression/expression |
Left to right |
Binocular operator |
* |
By |
Expression-expression * |
Binocular operator |
% |
Remainder (modulo) |
Integer expression/integer expression |
Binocular operator |
4 |
+ |
Add |
An expression + an expression |
Left to right |
Binocular operator |
- |
Reducing |
Expression-expression |
Binocular operator |
5 |
<< |
Move left |
Variables << expressions |
Left to right |
Binocular operator |
>> |
Move right |
Variables >> expressions |
Binocular operator |
6 |
> |
Greater than |
Expressions > expressions |
Left to right |
Binocular operator |
>= |
Greater than or equal |
Expression->= expression |
Binocular operator |
< |
Less than |
Expressions < expressions |
Binocular operator |
<= |
Less than or equal |
Expression-<= expression |
Binocular operator |
7 |
== |
Equals |
Expression-= = Expression |
Left to right |
Binocular operator |
!= |
Not equal to |
Expression! = Expression |
Binocular operator |
8 |
& |
Bitwise-AND |
Expressions & Expressions |
Left to right |
Binocular operator |
9 |
^ |
Bitwise XOR OR |
An expression ^ expression |
Left to right |
Binocular operator |
10 |
| |
Bitwise OR |
Expression-expression |
Left to right |
Binocular operator |
11 |
&& |
Logic and |
Expressions && Expressions |
Left to right |
Binocular operator |
12 |
|| |
Logical OR |
An expression | | An expression |
Left to right |
Binocular operator |
13 |
?: |
Conditional operators |
Expression 1? Expression 2: Expression 3 |
Right to Left |
Trinocular operator |
14 |
= |
Assignment operators |
variable = expression |
Right to Left |
|
/= |
Assign value after addition |
Variable-/= expression |
|
*= |
Multiply post-Assign value |
Variable-*= expression |
|
%= |
Assign value after modulo |
Variable-%= expression |
|
+= |
Add after Assignment |
Variable + = expression |
|
-= |
Reduced-value Assignment |
Variable-= expression |
|
<<= |
Assign value after left shift |
Variable-<<= expression |
|
>>= |
Assign value after right shift |
Variable->>= expression |
|
&= |
Bitwise AND post-assigned values |
Variable-&= expression |
|
^= |
Bitwise XOR or post-assignment |
Variable-^= expression |
|
|= |
Bitwise OR post-assigned value |
Variable-|= expression |
|
15 |
, |
Comma operator |
expression, expression,... |
Left to right |
Left-to-right sequential operation |
Operators of the same precedence, the order of operations is determined by the binding direction.
C + + operator explanation