c++运算符优先级列表

下表列出了C ++运算符的优先级和结合性。操作符列出从上到下，降优先。

优先级	操作符	描述	结合性
1	::	Scope resolution	Left-to-right
2	++   --	Suffix/postfix increment and decrement（如:i++）
	()	Function call
	[]	Array subscripting
	.	Element selection by reference
	−>	Element selection through pointer
3	++   --	Prefix increment and decrement(如：++i)	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
	=	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

http://en.cppreference.com/w/cpp/language/operator_precedence

有个速记口诀：

2011-06-16 19:05 林缘雨梦

阔框点箭域先锋 ① () [] . -> ::
塞外干旱烦政府 ②sizeof ! ~ + -
家家户户限制米 ++ -- (type型) &(取址) *
救灾捐米一点米 ③->* .*
时余曾促物价减 ④% * / ⑤+ -
左邻右舍来相告 ⑥<< >>
老大小凳换大凳 ⑦> < <= >=
把事说明等不等 ⑧== !=
久雨适宜事宜否 ⑨&⑩^⑾|
十二雨下十三过 ⑿&&⒀||
三梦睡醒灯都灭 ⒁:?(三目运算) ⒂= +=...⒃,(逗号)