C++运算符优先级

运算符优先级：

域名解析符最高；

然后是前置增量符/前置减量符/括号/数组下标/指针访问符；

单目运算符比双目运算符高；

算术双目比其它双目高；

位运算高于关系运算；

关系运算高于按位运算（&, |, ^）；

按位运算高于逻辑运算；

三目的只有一个条件运算（？：），低于逻辑运算

赋值运算仅比 , (顺序运算)高

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
typeid()	Run-time type information (see typeid)
const_cast	Type cast (see const_cast)
dynamic_cast	Type cast (see dynamic_cast)
reinterpret_cast	Type cast (see reinterpret_cast)
static_cast	Type cast (see static_cast)
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 (exceptions throwing)
18	,	Comma	Left-to-right