C语言赋值运算符

广告位

赋值运算符 还有C语言支持以下赋值运算符: 运算符 描述 示例 = 简单的赋值操作符,分配值从右边的操作数到左…

赋值运算符

还有C语言支持以下赋值运算符:

运算符 描述 示例
= 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

试试下面的例子就明白了可用C语言编程的所有赋值运算符:

  #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 );    }

当编译和执行上面的程序就产生以下结果:

  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

贺, 贺朝

关于作者: 贺朝

为您推荐