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
	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 explicit_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/modulus[1]
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