付翔的专栏
在鄙视中成长 记录成长的点滴
posts - 106,  comments - 32,  trackbacks - 0

C++ 运算符优先级列表

http://www.cppreference.com/operator_precedence.html 
PrecedenceOperatorDescriptionExampleAssociativity
1 ()
[]
->
.
::
++
--
Grouping operator
Array access
Member access from a pointer
Member access from an object
Scoping operator
Post-increment
Post-decrement
(a + b) / 4;
array[4] = 2;
ptr->age = 34;
obj.age = 34;
Class::age = 2;
for( i = 0; i < 10; i++ ) ...
for( i = 10; i > 0; i-- ) ...
left to right
2 !
~
++
--
-
+
*
&
(type)
sizeof
Logical negation
Bitwise complement
Pre-increment
Pre-decrement
Unary minus
Unary plus
Dereference
Address of
Cast to a given type
Return size in bytes
if( !done ) ...
flags = ~flags;
for( i = 0; i < 10; ++i ) ...
for( i = 10; i > 0; --i ) ...
int i = -1;
int i = +1;
data = *ptr;
address = &obj;
int i = (int) floatNum;
int size = sizeof(floatNum);
right to left
3 ->*
.*
Member pointer selector
Member pointer selector
ptr->*var = 24;
obj.*var = 24;
left to right
4 *
/
%
Multiplication
Division
Modulus
int i = 2 * 4;
float f = 10 / 3;
int rem = 4 % 3;
left to right
5 +
-
Addition
Subtraction
int i = 2 + 3;
int i = 5 - 1;
left to right
6 <<
>>
Bitwise shift left
Bitwise shift right
int flags = 33 << 1;
int flags = 33 >> 1;
left to right
7 <
<=
>
>=
Comparison less-than
Comparison less-than-or-equal-to
Comparison greater-than
Comparison geater-than-or-equal-to
if( i < 42 ) ...
if( i <= 42 ) ...
if( i > 42 ) ...
if( i >= 42 ) ...
left to right
8 ==
!=
Comparison equal-to
Comparison not-equal-to
if( i == 42 ) ...
if( i != 42 ) ...
left to right
9 & Bitwise AND flags = flags & 42; left to right
10 ^ Bitwise exclusive OR flags = flags ^ 42; left to right
11 | Bitwise inclusive (normal) OR flags = flags | 42; left to right
12 && Logical AND if( conditionA && conditionB ) ... left to right
13 || Logical OR if( conditionA || conditionB ) ... left to right
14 ? : Ternary conditional (if-then-else) int i = (a > b) ? a : b; right to left
15 =
+=
-=
*=
/=
%=
&=
^=
|=
<<=
>>=
Assignment operator
Increment and assign
Decrement and assign
Multiply and assign
Divide and assign
Modulo and assign
Bitwise AND and assign
Bitwise exclusive OR and assign
Bitwise inclusive (normal) OR and assign
Bitwise shift left and assign
Bitwise shift right and assign
int a = b;
a += 3;
b -= 4;
a *= 5;
a /= 2;
a %= 3;
flags &= new_flags;
flags ^= new_flags;
flags |= new_flags;
flags <<= 2;
flags >>= 2;
right to left
16 , Sequential evaluation operator for( i = 0, j = 0; i < 10; i++, j++ ) ... left to right

posted on 2010-08-14 10:07 付翔 阅读(71) 评论(0)  编辑 收藏 引用 所属分类: c++

只有注册用户登录后才能发表评论。
【推荐】超50万行VC++源码: 大型组态工控、电力仿真CAD与GIS源码库
网站导航: 博客园   IT新闻   BlogJava   知识库   博问   管理



<2010年8月>
25262728293031
1234567
891011121314
15161718192021
22232425262728
2930311234

常用链接

留言簿(2)

随笔分类

随笔档案

文章分类

文章档案

CSDN - 我的blog地址

博客

搜索

  •  

最新评论

阅读排行榜

评论排行榜