# Golang program to rotate specified bits of the binary number in the left/right direction

Here, we are going to learn how to rotate specified bits of the binary number in the left/right direction in Golang (Go Language)?
Submitted by Nidhi, on April 30, 2021

Problem Solution:

Here, we will rotate the bits of input number in the left and right direction using the bits.RotateLeft() function and print the result on the console screen.

Program/Source Code:

The source code to rotate specified bits of the binary number in the left/right direction is given below. The given program is compiled and executed on the ubuntu 18.04 operating system successfully.

```// Golang program to rotate specified bits of
// the binary number in left/right direction

package main

import (
"fmt"
"math/bits"
)

func main() {
var num uint = 0

fmt.Printf("Enter number: ")
fmt.Scanf("%d", &num)

fmt.Printf("Number:  %064b\n", num)
fmt.Printf("After rotating 3-bit in left : \n%064b\n", bits.RotateLeft(num, 3))
fmt.Printf("After rotating 3-bit in right: \n%064b\n", bits.RotateLeft(num, -3))
}
```

Output:

```nter number: 108
Number:  0000000000000000000000000000000000000000000000000000000001101100
After rotating 3-bit in left :
0000000000000000000000000000000000000000000000000000001101100000
After rotating 3-bit in right:
1000000000000000000000000000000000000000000000000000000000001101
```

Explanation:

In the above program, we declare the package main. The main package is used to tell the Go language compiler that the package must be compiled and produced the executable file. Here, we imported the required packages to predefined functions.

In the main() function, we created an integer variable then read the value of the variable from the user, and then rotate the binary bits of the number using the bits.RotateLeft() function in the left/right direction. After that, we printed the result on the console screen.

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