using System;

​

public class Program

{

    public static void Main()

    {

        Console.WriteLine("enter number between 1-3");

        String str = Console.ReadLine();

        ExampleSwitch(str);

    }

​

    public static void ExampleSwitch(String str)

    {

        int num=int.Parse(str);

        switch(num){

            case 1 :Console.WriteLine("you have entered 1");    

                break;

            case 2 :Console.WriteLine("you have entered 2");    

                break;

            case 3 :Console.WriteLine("you have entered 3");    

                break;

            default :Console.WriteLine("enter number between 1-3 only!!");  

                break;

        }

    }

}