using System;

​

public class Program

{

    public static void Main()

    {

        int i = 2;

        // the switch statement contains the condition (i)

        switch (i)

        {

            // each case contains an evaluation criteria 

            case 1:

                Console.WriteLine("i=1");

                break;

            case 2:

                Console.WriteLine("i=2");

                break;

            case 3:

                Console.WriteLine("i=3");

                break;

            // if none of the conditions are met the 'default' (optional) statement is executed

            default:

                Console.WriteLine("i is not 1,2, or 3");

                break;

        }

        // the switch statement contains the condition (i)

        switch (i)

        {

            // each case contains an evaluation criteria

            // notice the empty case statements are allowed to fall through to the next

            //      (e.g. no break statement)

            case 1:

            case 2:

            case 3:

                Console.WriteLine("i<=3");

                break;

        }

    }

}