using System;

public class Program

{

​

public static void Main()

​

{

int age = 25;

​

switch (age)

{ 

    case 10:

        Console.WriteLine("Value of age is 10");

        break;

    case 20:

        Console.WriteLine("Value of age is 20");

        break;

    case 25:

        Console.WriteLine("Value of age is 25");

        break;

    default:

        Console.WriteLine("Unknown value");

        break;

}

}

}