using System;
public class Program
{
public void Start()
int choice = -1;
while(choice != 0 )
ShowMenu();
choice = int.Parse(Console.ReadLine());
switch (choice)
case 0:
//donothing
break;
case 1:
Console.WriteLine(" You choose 1.");
case 2:
Console.WriteLine(" You choose 2.");
}
private void ShowMenu()
Console.WriteLine("Please choose your choice 0, 1, 2");
public static void Main(string[] args)
Program P = new Program();
P.Start();