C++ 运算符优先级列表

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

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
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
	=	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