> For the complete documentation index, see [llms.txt](https://docs.1l.lol/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.1l.lol/basics/operator-precedence.md).

# 运算符优先级

| 优先级 | 运算符类别 | 具体运算符                                                                            | 结合性  | 说明            |       |               |
| --- | ----- | -------------------------------------------------------------------------------- | ---- | ------------- | ----- | ------------- |
| 1   | 最高优先级 | `()` (括号)、`[]` (下标)、`.` (成员访问)、`->` (指针成员访问)                                     | 从左到右 | 括号优先改变运算顺序    |       |               |
| 2   | 一元运算符 | `!` (非)、`~` (按位非)、`++`/`--` (自增 / 自减)、`+`/`-` (正负号)、`*` (解引用)、`&` (取地址)、`sizeof` | 从右到左 | 仅作用于单个操作数     |       |               |
| 3   | 算术乘除模 | `*` (乘)、`/` (除)、`%` (取模)                                                         | 从左到右 | 乘除模优先级高于加减    |       |               |
| 4   | 算术加减  | `+` (加)、`-` (减)                                                                  | 从左到右 |               |       |               |
| 5   | 移位运算符 | `<<` (左移)、`>>` (右移)                                                              | 从左到右 | 二进制位操作        |       |               |
| 6   | 关系运算符 | `<`、`<=`、`>`、`>=`                                                                | 从左到右 | 比较大小，返回布尔值    |       |               |
| 7   | 相等运算符 | `==` (等于)、`!=` (不等于)                                                             | 从左到右 | 注意区分`==`和`=`  |       |               |
| 8   | 按位与   | `&`                                                                              | 从左到右 | 二进制位与         |       |               |
| 9   | 按位异或  | `^`                                                                              | 从左到右 | 二进制位异或        |       |               |
| 10  | 按位或   | \`                                                                               | \`   | 从左到右          | 二进制位或 |               |
| 11  | 逻辑与   | `&&`                                                                             | 从左到右 | 短路求值（左假则右不执行） |       |               |
| 12  | 逻辑或   | \`                                                                               |      | \`            | 从左到右  | 短路求值（左真则右不执行） |
| 13  | 三目运算符 | `?:`                                                                             | 从右到左 | 唯一的三目运算符      |       |               |
| 14  | 赋值运算符 | `=`、`+=`、`-=`、`*=`、`/=`、`%=`、`<<=`、`>>=`、`&=`、`^=`、\`                            | =\`  | 从右到左          | 赋值操作  |               |
| 15  | 逗号运算符 | `,`                                                                              | 从左到右 | 分隔表达式，取最后一个值  |       |               |


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