C++运算符优先级
同一优先级按结合性顺序运算
**********************************************************************
第一优先级
:: Scope resolution None
**********************************************************************
第二优先级
. Member selection (object) Left to right
-> Member selection (pointer) Left to right
[] Array subscript Left to right
() Function call Left to right
() member initialization Left to right
++ Postfix increment Left to right
-- Postfix decrement Left to right
typeid type name Left to right
() Type cast (conversion) Left to right
const_cast Type cast (conversion) Left to right
dynamic_cast Type cast (conversion) Left to right
reinterpret_cast Type cast (conversion) Left to right
static_cast Type cast (conversion) Left to right
**********************************************************************
第三优先级
sizeof Size of object or type Right to left
++ Prefix increment Right to left
-- Prefix decrement Right to left
~ One's complement Right to left
! Logical not Right to left
- Unary minus Right to left
+ Unary plus Right to left
& Address-of Right to left
* Indirection Right to left
new Create object Right to left
delete Destroy object Right to left
() Cast Right to left
**********************************************************************
第四优先级
.* Pointer-to-member (objects) Left to right
->* Pointer-to-member (pointers) Left to right
**********************************************************************
第五优先级
* Multiplication Left to right
/ Division Left to right
% Modulus Left to right
**********************************************************************
第六优先级
+ Addition Left to right
- Subtraction Left to right
**********************************************************************
第七优先级
<< Left shift Left to right
>> Right shift Left to right
**********************************************************************
第八优先级
< Less than Left to right
> Greater than Left to right
<= Less than or equal to Left to right
>= Greater than or equal to Left to right
**********************************************************************
第九优先级
== Equality Left to right
!= Inequality Left to right
**********************************************************************
第十优先级
& Bitwise AND Left to right
**********************************************************************
第十一优先级
^ Bitwise exclusive OR Left to right
**********************************************************************
第十二优先级
| Bitwise inclusive OR Left to right
**********************************************************************
第十三优先级
&& Logical AND Left to right
**********************************************************************
第十四优先级
|| Logical OR Left to right
**********************************************************************
第十五优先级
e1 ? e2 : e3 Conditional Right to left
**********************************************************************
第十六优先级
= Assignment Right to left
*= Multiplication assignment Right to left
/= Division assignment Right to left
%= Modulus assignment Right to left
+= Addition assignment Right to left
-= Subtraction assignment Right to left
<<= Left-shift assignment Right to left
>>= Right-shift assignment Right to left
&= Bitwise AND assignment Right to left
|= Bitwise inclusive OR assignment Right to left
^= Bitwise exclusive OR assignment Right to left
**********************************************************************
第十七优先级
throw expr throw expression Right to left
**********************************************************************
第十八优先级
, Comma Left to right
**********************************************************************