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feat(CPP):Add C++ Operators
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docs/resource/programming/CPP/C++Operators/cpp-arithmetic-operators.md
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C++ 算术运算符 | ||
===== | ||
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C++ 中的算术运算符用于对操作数执行算术或数学运算。例如,'**+**' 用于加法,'**–**' 用于减法,'*****' 用于乘法,等等。简单来说,算术运算符用于对变量和数据执行算术运算;它们遵循运算符和操作数之间的相同关系。 | ||
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**C++ 算术运算符有 2 种类型:** | ||
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1. **一元算术运算符** | ||
2. **二元算术运算符** | ||
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### 1. 二元算术运算符 | ||
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这些运算符操作或使用两个操作数。C++ 提供了 **5** 个二进制*算术运算符*来执行算术函数: | ||
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| 算子 | 运算符名称 | 操作 | 实现 | | ||
| :---: | :--------: | :--------------------------------: | :--: | | ||
| **+** | 加法 | 用于计算两个操作数的加法 | x+y | | ||
| **–** | 减法 | 用于计算两个操作数的减法 | x-y | | ||
| ***** | 乘法 | 用于计算两个操作数的乘法 | x*y | | ||
| **/** | 取商 | 用于计算两个操作数的除法 | x/y | | ||
| **%** | 取余 | 用于计算两个操作数后计算 Remainder | x%y | | ||
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**例** | ||
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```C++ | ||
// C++ program to execute all 5 | ||
// arithmetic function | ||
#include <iostream> | ||
using` `namespace` `std; | ||
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int` `main() | ||
{ | ||
``int` `GFG1, GFG2; | ||
``GFG1 = 10; | ||
``GFG2 = 3; | ||
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``// printing the sum of GFG1 and GFG2 | ||
``cout<< ``"GFG1 + GFG2= "` `<< (GFG1 + GFG2) << endl; | ||
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``// printing the difference of GFG1 and GFG2 | ||
``cout << ``"GFG1 - GFG2 = "` `<< (GFG1 - GFG2) << endl; | ||
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``// printing the product of GFG1 and GFG2 | ||
``cout << ``"GFG1 * GFG2 = "` `<< (GFG1 * GFG2) << endl; | ||
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``// printing the division of GFG1 by GFG2 | ||
``cout << ``"GFG1 / GFG2 = "` `<< (GFG1 / GFG2) << endl; | ||
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``// printing the modulo of GFG1 by GFG2 | ||
``cout << ``"GFG1 % GFG2 = "` `<< (GFG1 % GFG2) << endl; | ||
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``return` `0; | ||
} | ||
``` | ||
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**输出** | ||
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```C++ | ||
GFG1 + GFG2= 13 | ||
GFG1 - GFG2 = 7 | ||
GFG1 * GFG2 = 30 | ||
GFG1 / GFG2 = 3 | ||
GFG1 % GFG2 = 1 | ||
``` | ||
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### 2. 一元运算符 | ||
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这些运算符操作或使用单个操作数。 | ||
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| 算子 | 象征 | 操作 | 实现 | | ||
| :--------: | :--: | :------------------: | :--------: | | ||
| 递减运算符 | — | 将变量的整数值减少 1 | –x 或 x — | | ||
| 递增运算符 | ++ | 将变量的整数值增加 1 | ++x 或 x++ | | ||
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**例** | ||
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```C++ | ||
// C++ Program to demonstrate the | ||
// increment and decrement operators | ||
#include <iostream> | ||
using` `namespace` `std; | ||
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int` `main() | ||
{ | ||
``int` `x = 5; | ||
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``// This statement Incremented 1 | ||
``cout << ``"x++ is "` `<< x++ << endl; | ||
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``// This statement Incremented 1 | ||
``// from already Incremented | ||
``// statement resulting in | ||
``// Incrementing of 2 | ||
``cout << ``"++x is "` `<< ++x << endl; | ||
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``int` `y = 10; | ||
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``// This statement Decremented 1 | ||
``cout << ``"y-- is "` `<< y-- << endl; | ||
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``// This statement Decremented 1 | ||
``// from already Decremented | ||
``// statement resulting in | ||
``// Decrementing of 2 | ||
``cout << ``"--y is "` `<< --y << endl; | ||
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``return` `0; | ||
} | ||
``` | ||
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**输出** | ||
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``` | ||
x++ is 5 | ||
++x is 7 | ||
y-- is 10 | ||
--y is 8 | ||
``` | ||
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*在 **++x** 中,变量的值首先增加/递增,然后再在程序中使用。* | ||
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*在 **x++** 中,变量的值在增加/递增之前被分配。* | ||
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*递减运算符也会发生类似情况。* | ||
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