Simple Go guess number game

guess_number.go

package main

import (
	"fmt"
	"math/rand"
	"time"
)

func main() {
	exit := false

	for !exit {
		lives := 3
		guess := GetRandomNumber(10)
		isRight := false

		var answer int
		for lives > 0 && !isRight {
			fmt.Printf("Lives: %d\nGuess number: ", lives)
			fmt.Scanln(&answer)

			switch {
			case answer < guess:
				fmt.Println("Lesser")
			case answer > guess:
				fmt.Println("Greater")
			default:
				isRight = true
			}

			lives--
			fmt.Println()
		}

		if isRight {
			fmt.Println("Nice")
		} else {
			fmt.Println("You noob")
		}
		fmt.Printf("Your answer: %d | Expected answer: %d\n", answer, guess)

		fmt.Print("Do you want to exit? [0/1] ")
		var exitChoice int
		fmt.Scanln(&exitChoice)

		if exitChoice == 1 {
			exit = true
		}
		fmt.Println()
	}
	fmt.Println("Thank you for playing")
}

func GetRandomNumber(max int) int {
	s1 := rand.NewSource(time.Now().Unix())
	r1 := rand.New(s1)

	return r1.Intn(max)
}