The number entered by the user is not being converted or interpreted as an integer in Go code

I am running this code in Visual studio code.

package main

import (
	"bufio"
	"fmt"
	"math/rand"
	"os"
	"strconv"
	"strings"
	"time"
)

func main() {
	min, max := 1, 100
	rand.Seed(time.Now().UnixNano())
	secretNumber := rand.Intn(max-min) + min
	fmt.Println(secretNumber)

	fmt.Println("Guess a number between 1 and 100")
	fmt.Println("Please input your guess")

	reader := bufio.NewReader(os.Stdin)
	input, err := reader.ReadString('\n')
	if err != nil {
		fmt.Println("An error occured while reading input. Please try again", err)
		return
	}

	input = strings.TrimSuffix(input, "\n")

	guess, err := strconv.Atoi(input)
	if err != nil {
		fmt.Println("Invalid input. Please enter an integer value")
		return
	}

	fmt.Println("Your guess is", guess)
}

I have copied this code from this link https://freshman.tech/golang-guess/ When I run this code on my system, after entering the number by hitting the enter key instead of printing the entered number my code is generating this output.

56
Guess a number between 1 and 100
Please input your guess
63
Invalid input. Please enter an integer value

Can anyone please guide me how to solve this problem.

Are you on Windows? I suspect your console is giving you \r\n at the end of each line, not just \n.

You can trim all whitespace from a string...

Instead of this:

input = strings.TrimSuffix(input, "\n")

Use this:

input = strings.TrimSpace(input)

This will trim space, including \r and \n, from both the beginning and end.