运算符优先级 功能详解

    运算符优先级工具是一种帮助程序员确定计算表达式中各个运算符优先级的工具。

    Java 运算符优先级

    运算符 优先级
    postfix expr ++ expr --
    unary ++ expr -- expr + expr - expr ~ !
    multiplicative * / %
    additive + -
    shift << >> >>>
    relational < > <= >= instanceof
    equality == !=
    bitwise AND &
    bitwise exclusive OR ^
    bitwise inclusive OR |
    logical AND &&
    logical OR ||
    ternary ? :
    assignment = += -= *= /= %= &= ^= |= <<= >>= >>>=

    C++运算符优先级

    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
    16 = 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
    17 throw Throw operator (for exceptions)
    18 , Comma Left-to-right

    C语言运算符优先级

    Precedence Operator Description Associativity
    1 ++ -- Suffix/postfix increment and decrement Left-to-right
    () Function call
    [] Array subscripting
    . Structure and union member access
    −> Structure and union member access through pointer
    ( type ){ list } Compound literal (C99)
    2 ++ -- 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
    _Alignof Alignment requirement (C11)
    3 * / % Multiplication, division, and remainder Left-to-right
    4 + − Addition and subtraction
    5 << >> Bitwise left shift and right shift
    6 < <= For relational operators < and ≤ respectively
    > >= For relational operators > and ≥ respectively
    7 == != For relational = and ≠ respectively
    8 & Bitwise AND
    9 ^ Bitwise XOR (exclusive or)
    10 | Bitwise OR (inclusive or)
    11 && Logical AND
    12 || Logical OR
    13 ?: Ternary conditional Right-to-Left
    14 = Simple assignment
    += −= 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
    15 , Comma Left-to-right

    PHP运算符优先级

    结合方向 运算符 附加信息
    非结合 clone new clone 和 new
    左 [ array()
    非结合 ++ -- 递增／递减运算符
    非结合 ~ - (int) (float) (string) (array) (object) (bool) @ 类型
    非结合 instanceof 类型
    右结合 ! 逻辑操作符
    左 * / % 算术运算符
    左 + - . 算术运算符 和 字符串运算符
    左 << >> 位运算符
    非结合 < <= > >= <> 比较运算符
    非结合 == != === !== 比较运算符
    左 & 位运算符 和 引用
    左 ^ 位运算符
    左 | 位运算符
    左 && 逻辑运算符
    左 || 逻辑运算符
    左 ? : 三元运算符
    右 = += -= *= /= .= %= &= |= ^= <<= >>= 赋值运算符
    左 and 逻辑运算符
    左 xor 逻辑运算符
    左 or 逻辑运算符
    左 , 多处用到

    Python 运算符优先级

    运算符 描述
    lambda Lambda表达式
    or 布尔“或”
    and 布尔“与”
    not x 布尔“非”
    in，not in 成员测试
    is，is not 同一性测试
    <，<=，>，>=，!=，== 比较
    | 按位或
    ^ 按位异或
    & 按位与
    <<，>> 移位
    +，- 加法与减法
    *，/，% 乘法、除法与取余
    +x，-x 正负号
    ~x 按位翻转
    ** 指数
    x.attribute 属性参考
    x[index] 下标
    x[index:index] 寻址段
    f(arguments...) 函数调用
    (experession,...) 绑定或元组显示
    [expression,...] 列表显示
    {key:datum,...} 字典显示
    'expression,...' 字符串转换
    声明：该工具由 运算符优先级 - 无界在线工具(https://tool.wbtime.com/) 提供。网站致力于打造极简、便捷、好用的在线工具，如该工具有任何问题，可以进行反馈留言，感谢您的使用与支持！