Java 运算符优先级+ C++ 运算符优先级+ C 语言运算符优先级+ PHP 运算符优先级 Python 运算符优先级

ximagine

2022年1月23日19:45:2233

0 1 3464字阅读11分32秒沉浸阅读

宝藏摘要

运算符的优先级决定了表达式中运算执行的先后顺序，优先级高的运算符会作为优先级低的运算符的操作符，优先级从上到下依次递减，最上面具有最高的优先级，逗号操作符具有最低的优先级，优先级高的运算符先结合，优先级低的运算符后结合，同一行中的运算符的优先级相同，荒岛本次带来Java、C++、PHP、Python、C 语言运算符优先级的教程。

Java 运算符优先级+ C++ 运算符优先级+ C 语言运算符优先级+ PHP 运算符优先级 Python 运算符优先级

宝藏归属：教程说明书 发表观点：前往评论 浏览次数：33 次 更新时间：2022年5月21日 09:22:52

运算符的优先级决定了表达式中运算执行的先后顺序，优先级高的运算符会作为优先级低的运算符的操作符。在一个表达式中可能包含多个有不同运算符连接起来的、具有不同数据类型的数据对象，由于表达式有多种运算，不同的结合顺序可能得出不同结果甚至出现错误运算错误，因为当表达式中含多种运算时必须按一定顺序进行结合，才能保证运算的合理性和结果的正确性唯一性。宝藏来自荒岛 - 一座藏有宝藏的小岛-https://x-imagine.com/java-c-php-python-operator-precedence.html

优先级从上到下依次递减，最上面具有最高的优先级，逗号操作符具有最低的优先级。表达式的结合次序取决于表达式中各种运算符的优先级。优先级高的运算符先结合，优先级低的运算符后结合，同一行中的运算符的优先级相同。荒岛本次带来 Java、C++、PHP、Python、C 语言运算符优先级的教程。宝藏来自荒岛 - 一座藏有宝藏的小岛-https://x-imagine.com/java-c-php-python-operator-precedence.html

宝藏来自荒岛 - 一座藏有宝藏的小岛-https://x-imagine.com/java-c-php-python-operator-precedence.html

Java 运算符优先级+ C++ 运算符优先级+ C 语言运算符优先级+ PHP 运算符优先级 Python 运算符优先级

宝藏来自荒岛 - 一座藏有宝藏的小岛-https://x-imagine.com/java-c-php-python-operator-precedence.html

Java

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++

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
8	`>` `>=`	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

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
6	`>` `>=`	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

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	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