= 简单的赋值操作符，分配值从右边的操作数到左侧的操作数 C = A + B 将分配值 A + B 到 C
+= ADD与赋值运算符，它增加右操作数左操作数并分配结果左操作数 C += A 相当于 C = C + A
-= 减法与赋值运算符，它从左侧的操作数减去右操作数和分配结果到左操作数 C -= A 相当于 C = C - A
*= 乘法与赋值运算符，它乘以右边的操作数与左操作数和分配结果左操作数 C *= A 相当于 C = C * A
/= 除法与赋值运算符，它把左操作数与右操作数和分配结果左操作数 C /= A 相当于 C = C / A
%= 模量和赋值运算符，它需要使用两个操作数的模量和分配结果左操作数 C %= A 相当于 C = C % A
<<= 左移位并赋值运算符 C <<= 2 和 C = C << 2 一样
>>= 向右移位并赋值运算符 C >>= 2 和 C = C >> 2 一样
&= 按位与赋值运算符 C &= 2 和 C = C & 2 一样
^= 按位异或并赋值运算符 C ^= 2 和 C = C ^ 2 一样
|= 按位或并赋值运算符 C |= 2 和 C = C | 2 一样

## 例子

```#include <stdio.h>

main()
{
int a = 21;
int c ;

c =  a;
printf("Line 1 - =  Operator Example, Value of c = %d", c );

c +=  a;
printf("Line 2 - += Operator Example, Value of c = %d", c );

c -=  a;
printf("Line 3 - -= Operator Example, Value of c = %d", c );

c *=  a;
printf("Line 4 - *= Operator Example, Value of c = %d", c );

c /=  a;
printf("Line 5 - /= Operator Example, Value of c = %d", c );

c  = 200;
c %=  a;
printf("Line 6 - %= Operator Example, Value of c = %d", c );

c <<=  2;
printf("Line 7 - <<= Operator Example, Value of c = %d", c );

c >>=  2;
printf("Line 8 - >>= Operator Example, Value of c = %d", c );

c &=  2;
printf("Line 9 - &= Operator Example, Value of c = %d", c );

c ^=  2;
printf("Line 10 - ^= Operator Example, Value of c = %d", c );

c |=  2;
printf("Line 11 - |= Operator Example, Value of c = %d", c );

}```

```Line 1 - =  Operator Example, Value of c = 21
Line 2 - += Operator Example, Value of c = 42
Line 3 - -= Operator Example, Value of c = 21
Line 4 - *= Operator Example, Value of c = 441
Line 5 - /= Operator Example, Value of c = 21
Line 6 - %= Operator Example, Value of c = 11
Line 7 - <<= Operator Example, Value of c = 44
Line 8 - >>= Operator Example, Value of c = 11
Line 9 - &= Operator Example, Value of c = 2
Line 10 - ^= Operator Example, Value of c = 0
Line 11 - |= Operator Example, Value of c = 2```