C / C ++中的赋值运算符
赋值运算符用于将表达式的值/结果赋给变量（常量-在常量声明的情况下）。在执行基于赋值运算符的语句时，它将在右侧写的值（或表达式的结果）分配给在左侧写的变量。
语法：
variable = value;
赋值运算符的类型
C/C++语言提供了简单的赋值运算符是“=”，但一些其他的赋值运算（这是分配和其他经营者的组合）都可以使用。
赋值运算符是
注意：在右侧，可以使用值，表达式或任何变量。
1）简单赋值运算符（=）
它是一个简单的赋值运算符，用于将值和表达式的结果赋值给变量。
语法：
variable = value;
示例
//C++程序演示
//示例
#include <iostream>
using namespace std;
int main(){
int x = 0;
x = 10;
cout << "value of x = " << x << endl;
return 0;
}输出：
value of x = 10
2）加和赋值运算符（+=）
它将表达式的值或结果添加到变量的当前值，并将结果分配给变量。
语法：
variable += value;equivalent to: variable = variable + value;
示例
//C++程序演示
//示例
#include <iostream>
using namespace std;
int main(){
int x = 10;
cout << "Before the operation, x = " << x << endl;
x += 5;
cout << "After the operation, x = " << x << endl;
return 0;
}输出：
Before the operation, x = 10 After the operation, x = 15
3）减法和赋值运算符（-=）
它将表达式的值或结果减去该变量的当前值，并将结果分配给该变量。
语法：
variable -= value;equivalent to: variable = variable - value;
示例
//C++程序演示
//示例
#include <iostream>
using namespace std;
int main(){
int x = 10;
cout << "Before the operation, x = " << x << endl;
x -= 5;
cout << "After the operation, x = " << x << endl;
return 0;
}输出：
Before the operation, x = 10 After the operation, x = 5
4）乘法和赋值运算符（*=）
它将表达式的值或结果与变量的当前值相乘，并将结果分配给变量。
语法：
variable *= value;equivalent to: variable = variable * value;
示例
//C++程序演示
//示例
#include <iostream>
using namespace std;
int main(){
int x = 10;
cout << "Before the operation, x = " << x << endl;
x *= 5;
cout << "After the operation, x = " << x << endl;
return 0;
}输出：
Before the operation, x = 10 After the operation, x = 50
5）除法和赋值运算符（/=）
它将表达式的值或结果除以变量的当前值，然后将结果（商）分配给变量。
语法：
variable /= value;equivalent to: variable = variable / value;
示例
//C++程序演示
//示例
#include <iostream>
using namespace std;
int main(){
int x = 10;
cout << "Before the operation, x = " << x << endl;
x /= 5;
cout << "After the operation, x = " << x << endl;
return 0;
}输出：
Before the operation, x = 10 After the operation, x = 2
6）模块和赋值运算符（％=）
它将表达式的值或结果除以变量的当前值，然后将结果（余数）分配给变量。
语法：
variable %= value;equivalent to: variable = variable % value;
示例
//C++程序演示
//示例
#include <iostream>
using namespace std;
int main(){
int x = 10;
cout << "Before the operation, x = " << x << endl;
x %= 5;
cout << "After the operation, x = " << x << endl;
return 0;
}输出：
Before the operation, x = 10 After the operation, x = 0
7）左移和赋值运算符（<<=）
它将变量的值向左移动给定位数（值），并将结果分配给变量。
语法：
variable <<= value;equivalent to: variable = variable << value;
示例
//C++程序演示
// example of <<= operator
#include <iostream>
using namespace std;
int main(){
int x = 0x0A;
cout << "Before the operation, x = " << x << endl;
x <<= 0x02;
cout << "After the operation, x = " << x << endl;
return 0;
}输出：
Before the operation, x = 10 After the operation, x = 40
8）右移和赋值运算符（>>=）
它将变量的值向右移动给定位数（值），并将结果分配给变量。
语法：
variable >>= value;equivalent to: variable = variable >> value;
示例
//C++程序演示
// example of >>= operator
#include <iostream>
using namespace std;
int main(){
int x = 0x0A;
cout << "Before the operation, x = " << x << endl;
x >>= 0x02;
cout << "After the operation, x = " << x << endl;
return 0;
}输出：
Before the operation, x = 10 After the operation, x = 2
9）按位与和赋值运算符（＆=）
它对具有给定值的变量的现有值执行按位与（＆）操作，并将结果分配给变量。
语法：
variable &= value;equivalent to: variable = variable & value;
示例
//C++程序演示
// example of &= operator
#include <iostream>
using namespace std;
int main(){
int x = 0x0A;
cout << "Before the operation, x = " << x << endl;
x &= 0x02;
cout << "After the operation, x = " << x << endl;
return 0;
}输出：
Before the operation, x = 10 After the operation, x = 2
10）按位或与赋值运算符（|=）
它对具有给定值的变量的现有值执行按位或（|）操作，并将结果分配给变量。
语法：
variable |= value;equivalent to: variable = variable | value;
示例
//C++程序演示
//示例
#include <iostream>
using namespace std;
int main(){
int x = 0x0A;
cout << "Before the operation, x = " << x << endl;
x |= 0x02;
cout << "After the operation, x = " << x << endl;
return 0;
}输出：
Before the operation, x = 10 After the operation, x = 10
11）按位XOR和赋值运算符（^=）
它对具有给定值的变量的现有值执行按位XOR（^）操作，并将结果分配给变量。
语法：
variable ^= value;equivalent to: variable = variable ^ value;
示例
//C++程序演示
//^=运算符的示例
#include <iostream>
using namespace std;
int main(){
int x = 0x0A;
cout << "Before the operation, x = " << x << endl;
x ^= 0x02;
cout << "After the operation, x = " << x << endl;
return 0;
}输出：
Before the operation, x = 10 After the operation, x = 8
C++程序演示各种赋值运算符的示例
//C++程序演示 example
//各种赋值运算符
#include <iostream>
using namespace std;
int main(){
int x = 0;
//=运算符
x = 20;
cout << "x = " << x << endl;
//+=运算符
x += 5;
cout << "x = " << x << endl;
//-=运算符
x -= 5;
cout << "x = " << x << endl;
//*=运算符
x *= 5;
cout << "x = " << x << endl;
///=运算符
x /= 3;
cout << "x = " << x << endl;
//％=运算符
x %= 5;
cout << "x = " << x << endl;
// <<= operator
x <<= 5;
cout << "x = " << x << endl;
// >>= operator
x >>= 5;
cout << "x = " << x << endl;
// &= operator
x &= 5;
cout << "x = " << x << endl;
//|=运算符
x |= 5;
cout << "x = " << x << endl;
//^=运算符
x ^= 10;
cout << "x = " << x << endl;
return 0;
}