Java 運算符優先級 運算符 優先級

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++運算符優先級 Precedence Operator Description Associativity 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18

::	Scope resolution	Left-to-right
++???--	Suffix/postfix increment and decrement
()	Function call
[]	Array subscripting
.	Element selection by reference
?>	Element selection through pointer
++???--	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
.*???->*	Pointer to member	Left-to-right
*???/???%	Multiplication, division, and remainder
+????	Addition and subtraction
<<???>>	Bitwise left shift and right shift
<???<=	For relational operators < and ≤ respectively
>???>=	For relational operators > and ≥ respectively
==???!=	For relational = and ≠ respectively
&	Bitwise AND
^	Bitwise XOR (exclusive or)
|	Bitwise OR (inclusive or)
&&	Logical AND
||	Logical OR
?:	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
throw	Throw operator (for exceptions)
,	Comma	Left-to-right

C語言運算符優先級 Precedence Operator Description Associativity 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

++?--	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)
++?--	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)
*?/?%	Multiplication, division, and remainder	Left-to-right
+??	Addition and subtraction
<<?>>	Bitwise left shift and right shift
<?<=	For relational operators < and ≤ respectively
>?>=	For relational operators > and ≥ respectively
==?!=	For relational = and ≠ respectively
&	Bitwise AND
^	Bitwise XOR (exclusive or)
|	Bitwise OR (inclusive or)
&&	Logical AND
||	Logical OR
?:	Ternary conditional	Right-to-Left
=	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
,	Comma	Left-to-right

PHP運算符優先級 結合方向 運算符 附加信息

非結合	clone new	clone 和 new
左	[	array()
非結合	++ --	遞增／遞減運算符
非結合	~ - (int) (float) (string) (array) (object) (bool) @	類型
非結合	instanceof	類型
右結合	!	邏輯操作符
左	* / %	算術運算符
左	+ - .	算術運算符 和 字符串運算符
左	<< >>	位運算符
非結合	< <= > >= <>	比較運算符
非結合	== != === !==	比較運算符
左	&	位運算符 和 引用
左	^	位運算符
左	|	位運算符
左	&&	邏輯運算符
左	||	邏輯運算符
左	? :	三元運算符
右	= += -= *= /= .= %= &= |= ^= <<= >>=	賦值運算符
左	and	邏輯運算符
左	xor	邏輯運算符
左	or	邏輯運算符
左	,	多處用到

這個表給出Python的運算符優先級（從低到高）.

從最低的優先級（最松散地結合）到最高的優先級（最緊密地結合）。

這意味著在一個表達式中，Python會首先計算表中較下面的運算符，然后在計算列在表上部的運算符。

Python 運算符優先級 運算符 描述

lambda	Lambda表達式
or	布爾“或”
and	布爾“與”
not x	布爾“非”
in，not in	成員測試
is，is not	同一性測試
<，<=，>，>=，!=，==	比較
|	按位或
^	按位異或
&	按位與
<<，>>	移位
+，-	加法與減法
*，/，%	乘法、除法與取余
+x，-x	正負號
~x	按位翻轉
**	指數
x.attribute	屬性參考
x[index]	下標
x[index:index]	尋址段
f(arguments...)	函數調用
(experession,...)	綁定或元組顯示
[expression,...]	列表顯示
{key:datum,...}	字典顯示
'expression,...'	字符串轉換

from:?http://tool.oschina.net/

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