c中的运算优先级：
|
优先级 |
运算符 |
名称或含义 |
使用情势 |
结合方向 |
说明 |
|
1 |
[] |
数组下标 |
数组名[常量表达式] |
左到右 |
|
|
() |
圆括号 |
（表达式）/函数名(形参表) |
|||
|
. |
成员选择（对象） |
对象.成员名 |
|||
|
-> |
成员选择（指针） |
对象指针->成员名 |
|||
|
2 |
– |
负号运算符 |
-表达式 |
右到左 |
单目运算符 |
|
(类型) |
强迫类型转换 |
(数据类型)表达式 |
|||
|
++ |
自增运算符 |
++变量名/变量名++ |
单目运算符 |
||
|
— |
自减运算符 |
–变量名/变量名– |
单目运算符 |
||
|
* |
取值运算符 |
*指针变量 |
单目运算符 |
||
|
& |
取地址运算符 |
&变量名 |
单目运算符 |
||
|
! |
逻辑非运算符 |
!表达式 |
单目运算符 |
||
|
~ |
按位取反运算符 |
~表达式 |
单目运算符 |
||
|
sizeof |
长度运算符 |
sizeof(表达式) |
|||
|
3 |
/ |
除 |
表达式/表达式 |
左到右 |
双目运算符 |
|
* |
乘 |
表达式*表达式 |
双目运算符 |
||
|
% |
余数（取模） |
整型表达式/整型表达式 |
双目运算符 |
||
|
4 |
+ |
加 |
表达式+表达式 |
左到右 |
双目运算符 |
|
– |
减 |
表达式-表达式 |
双目运算符 |
||
|
5 |
<< |
左移 |
变量<<表达式 |
左到右 |
双目运算符 |
|
>> |
右移 |
变量>>表达式 |
双目运算符 |
||
|
6 |
> |
大于 |
表达式>表达式 |
左到右 |
双目运算符 |
|
>= |
大于等于 |
表达式>=表达式 |
双目运算符 |
||
|
< |
小于 |
表达式<表达式 |
双目运算符 |
||
|
<= |
小于等于 |
表达式<=表达式 |
双目运算符 |
||
|
7 |
== |
等于 |
表达式==表达式 |
左到右 |
双目运算符 |
|
!= |
不等于 |
表达式!= 表达式 |
双目运算符 |
||
|
8 |
& |
按位与 |
表达式&表达式 |
左到右 |
双目运算符 |
|
9 |
^ |
按位异或 |
表达式^表达式 |
左到右 |
双目运算符 |
|
10 |
| |
按位或 |
表达式|表达式 |
左到右 |
双目运算符 |
|
11 |
&& |
逻辑与 |
表达式&&表达式 |
左到右 |
双目运算符 |
|
12 |
|| |
逻辑或 |
表达式||表达式 |
左到右 |
双目运算符 |
|
13 |
?: |
条件运算符 |
表达式1? 表达式2: 表达式3 |
右到左 |
3目运算符 |
|
14 |
= |
赋值运算符 |
变量=表达式 |
右到左 |
|
|
/= |
除后赋值 |
变量/=表达式 |
|||
|
*= |
乘后赋值 |
变量*=表达式 |
|||
|
%= |
取模后赋值 |
变量%=表达式 |
|||
|
+= |
加后赋值 |
变量+=表达式 |
|||
|
-= |
减后赋值 |
变量-=表达式 |
|||
|
<<= |
左移后赋值 |
变量<<=表达式 |
|||
|
>>= |
右移后赋值 |
变量>>=表达式 |
|||
|
&= |
按位与后赋值 |
变量&=表达式 |
|||
|
^= |
按位异或后赋值 |
变量^=表达式 |
|||
|
|= |
按位或后赋值 |
变量|=表达式 |
|||
|
15 |
, |
逗号运算符 |
表达式,表达式,… |
左到右 |
从左向右顺序运算 |
波比源码 » C语言运算符优先级
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