Go - Assignment Operators

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The following table lists all the assignment operators supported by Go language −

Operator Description Example
= Simple assignment operator, Assigns values from right side operands to left side operand C = A + B will assign value of A + B into C
+= Add AND assignment operator, It adds right operand to the left operand and assign the result to left operand C += A is equivalent to C = C + A
-= Subtract AND assignment operator, It subtracts right operand from the left operand and assign the result to left operand C -= A is equivalent to C = C - A
*= Multiply AND assignment operator, It multiplies right operand with the left operand and assign the result to left operand C *= A is equivalent to C = C * A
/= Divide AND assignment operator, It divides left operand with the right operand and assign the result to left operand C /= A is equivalent to C = C / A
%= Modulus AND assignment operator, It takes modulus using two operands and assign the result to left operand C %= A is equivalent to C = C % A
<<= Left shift AND assignment operator C <<= 2 is same as C = C << 2
>>= Right shift AND assignment operator C >>= 2 is same as C = C >> 2
&= Bitwise AND assignment operator C &= 2 is same as C = C & 2
^= bitwise exclusive OR and assignment operator C ^= 2 is same as C = C ^ 2
|= bitwise inclusive OR and assignment operator C |= 2 is same as C = C | 2

Example

Try the following example to understand all the assignment operators available in Go programming language −

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 )
}

When you compile and execute the above program it produces the following result −

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
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