C++运算符优先级一览表

VC++常用功能开发汇总(专栏文章列表,欢迎订阅,持续更新...)https://blog.csdn.net/chenlycly/article/details/124272585C++软件异常排查从入门到精通系列教程(专栏文章列表,欢迎订阅,持续更新...)https://blog.csdn.net/chenlycly/article/details/125529931C++软件分析工具从入门到精通案例集锦(专栏文章正在更新中...)https://blog.csdn.net/chenlycly/article/details/131405795C/C++基础与进阶(专栏文章,持续更新中...)https://blog.csdn.net/chenlycly/category_11931267.html 当一个复杂的表达式中包含了多个运算符时,要读懂表达式的含义,就需要搞清楚这些运算符的优先级。下面完整地罗列了所有C++运算符的优先级,以供查阅和参考。

|----------------|-------------------------------------------------------------------------------------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|-------------------|
| Precedence | Operator | Description | Example | Associativity |
| 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 |

相关推荐
想要成为计算机高手12 分钟前
12. STL的原理
开发语言·c++·经验分享·stl
Heisenberg~34 分钟前
C++ 多态:面向对象编程的核心概念(二)
c++
float_六七3 小时前
C++中的搜索算法实现
java·c++·算法
编码小笨猪3 小时前
[ C++ ] | C++11 从左值引用到右值引用
开发语言·c++
菜鸟自学一哥3 小时前
MFC添加免费版大漠3.1233
c++·mfc
wen__xvn4 小时前
Codeforces Round 1014 (Div. 2)2092A - Kamilka and the Sheep c++
开发语言·c++·算法
梁下轻语的秋缘4 小时前
每日c/c++题 备战蓝桥杯(全排列问题)
c++·算法·蓝桥杯·深度优先
虾球xz4 小时前
游戏引擎学习第194天
c++·学习·游戏引擎
AredRabbit4 小时前
vector<int> 的用法
c++·算法·vector
m0_687399845 小时前
build cinecert/asdcplib to .so or .a
c++·ubuntu·dci