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Java/C++/C语言/PHP/Python运算符优先级对照表

作者：cndz 围观群众：1281 更新于 标签：运算符优先级运算符优先级对照

Java 运算符优先级

运算符优先级
postfixexpr++ 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

PrecedenceOperatorDescriptionAssociativity
1::Scope resolutionLeft-to-right
2++   --Suffix/postfix increment and decrement
()Function call
[]Array subscripting
.Element selection by reference
−>Element selection through pointer
3++   --Prefix increment and decrementRight-to-left
+   −Unary plus and minus
!   ~Logical NOT and bitwise NOT
(type)Type cast
*Indirection (dereference)
&Address-of
sizeofSize-of
new, new[]Dynamic memory allocation
delete, delete[]Dynamic memory deallocation
4.*   ->*Pointer to memberLeft-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 conditionalRight-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
17throwThrow operator (for exceptions)
18,CommaLeft-to-right

C语言运算符优先级

PrecedenceOperatorDescriptionAssociativity
1++ --Suffix/postfix increment and decrementLeft-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 decrementRight-to-left
+ −Unary plus and minus
! ~Logical NOT and bitwise NOT
(type)Type cast
*Indirection (dereference)
&Address-of
sizeofSize-of
_AlignofAlignment requirement(C11)
3* / %Multiplication, division, and remainderLeft-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 conditionalRight-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,CommaLeft-to-right

PHP运算符优先级

结合方向运算符附加信息
非结合clone newclone 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
lambdaLambda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
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