Go语言赋值运算符示例

Go语言支持以下赋值运算符：
赋值运算符示例

运算符	描述	示例
=	简单赋值操作符，将值从右侧操作数分配给左侧操作数	C = A + B，就是将A + B的值赋给C
+=	相加和赋值运算符，向左操作数添加右操作数，并将结果赋给左操作数	C += A 相当于 C = C + A
-=	减去和赋值运算符，从左操作数中减去右操作数，并将结果赋给左操作数	C -= A 相当于 C = C - A
*=	乘法和赋值运算符，它将右操作数与左操作数相乘，并将结果赋给左操作数	C *= A 相当于 C = C * A
/=	除法和赋值运算符，它用右操作数划分左操作数，并将结果分配给左操作数	C /= A 相当于 C = C / A
%=	模数和赋值运算符，它使用两个操作数来取模，并将结果分配给左操作数	C %= A 相当于 C = C % A
<<=	左移和赋值运算符	C << = 2相当于C = C << 2
>>=	右移和赋值运算符	C >>= 2 相当于 C = C >> 2
&=	按位和赋值运算符	C &= 2 相当于 C = C & 2
^=	按位异或和赋值运算符	C ^= 2 相当于 C = C ^ 2
=	按位包含OR和赋值运算符	C = 2 相当于 C = C 2

示例

尝试以下示例来了解Go编程语言中提供的所有关系运算符：

package main

import "fmt"

func main() {
   var a int = 21
   var c int

   c =  a
   fmt.Printf("Line 1 - =  Operator Example, Value of c = %d\n", c )

   c +=  a
   fmt.Printf("Line 2 - += Operator Example, Value of c = %d\n", c )

   c -=  a
   fmt.Printf("Line 3 - -= Operator Example, Value of c = %d\n", c )

   c *=  a
   fmt.Printf("Line 4 - *= Operator Example, Value of c = %d\n", c )

   c /=  a
   fmt.Printf("Line 5 - /= Operator Example, Value of c = %d\n", c )

   c  = 200; 

   c <<=  2
   fmt.Printf("Line 6 - <<= Operator Example, Value of c = %d\n", c )

   c >>=  2
   fmt.Printf("Line 7 - >>= Operator Example, Value of c = %d\n", c )

   c &=  2
   fmt.Printf("Line 8 - &= Operator Example, Value of c = %d\n", c )

   c ^=  2
   fmt.Printf("Line 9 - ^= Operator Example, Value of c = %d\n", c )

   c |=  2
   fmt.Printf("Line 10 - |= Operator Example, Value of c = %d\n", c )

}

当编译和执行上面程序，它产生以下结果：

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 = 800
Line 7 - >>= Operator Example, Value of c = 200
Line 8 - &= Operator Example, Value of c = 0
Line 9 - ^= Operator Example, Value of c = 2
Line 10 - |= Operator Example, Value of c = 2