Java 运算符优先级
| 运算符 |
优先级 |
| postfix |
expr++ expr-- |
| unary |
++expr --expr +expr -expr ~ ! |
| multiplicative |
* / % |
| additive |
+ - |
| shift |
<< >> >>> |
| relational |
< > <= >= instanceof |
| equality |
== != |
| bitwise AND |
& |
| bitwise exclusive OR |
^ |
| bitwise inclusive OR |
| |
| logical AND |
&& |
| logical OR |
|| |
| ternary |
? : |
| assignment |
= += -= *= /= %= &= ^= |= <<= >>= >>>= |
C++运算符优先级
| Precedence
|
Operator
|
Description
|
Associativity
|
| 1
|
::
|
Scope resolution
|
Left-to-right
|
| 2
|
++ --
|
Suffix/postfix increment and decrement
|
()
|
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)
|
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
|
| 16
|
=
|
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
|
| 17
|
throw
|
Throw operator (for exceptions)
|
| 18
|
,
|
Comma
|
Left-to-right
|
C语言运算符优先级
| 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
|
PHP运算符优先级
| 结合方向 |
运算符 |
附加信息 |
| 非结合 |
clone new |
clone 和 new |
| 左 |
[ |
array() |
| 非结合 |
++ -- |
递增／递减运算符
|
| 非结合 |
~ - (int) (float) (string) (array) (object) (bool) @ |
类型
|
| 非结合 |
instanceof |
类型
|
| 右结合 |
! |
逻辑操作符
|
| 左 |
* / % |
算术运算符
|
| 左 |
+ - . |
算术运算符 和 字符串运算符
|
| 左 |
<< >> |
位运算符
|
| 非结合 |
< <= > >= <> |
比较运算符
|
| 非结合 |
== != === !== |
比较运算符
|
| 左 |
& |
位运算符 和 引用
|
| 左 |
^ |
位运算符
|
| 左 |
| |
位运算符
|
| 左 |
&& |
逻辑运算符
|
| 左 |
|| |
逻辑运算符
|
| 左 |
? : |
三元运算符
|
| 右 |
= += -= *= /= .= %= &= |= ^= <<= >>=
|
赋值运算符
|
| 左 |
and |
逻辑运算符
|
| 左 |
xor |
逻辑运算符
|
| 左 |
or |
逻辑运算符
|
| 左 |
, |
多处用到 |
这个表给出Python的运算符优先级（从低到高）.
从最低的优先级（最松散地结合）到最高的优先级（最紧密地结合）。
这意味着在一个表达式中，Python会首先计算表中较下面的运算符，然后在计算列在表上部的运算符。
Python 运算符优先级
| 运算符 |
描述 |
lambda |
Lambda表达式 |
or |
布尔“或” |
and |
布尔“与” |
not x |
布尔“非” |
in，not in |
成员测试 |
is，is not |
同一性测试 |
<，<=，>，>=，!=，== |
比较 |
| |
按位或 |
^ |
按位异或 |
& |
按位与 |
<<，>> |
移位 |
+，- |
加法与减法 |
*，/，% |
乘法、除法与取余 |
+x，-x |
正负号 |
~x |
按位翻转 |
** |
指数 |
x.attribute |
属性参考 |
x[index] |
下标 |
x[index:index] |
寻址段 |
f(arguments...) |
函数调用 |
(experession,...) |
绑定或元组显示 |
[expression,...] |
列表显示 |
{key:datum,...} |
字典显示 |
'expression,...' |
字符串转换 |
程序运算符优先级对照表 Java/C++/C语言/PHP/Python是什么？有什么用？
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