using System;

public class Program

{

    public static void Main()

    {

            string str1 = "red";

​

            switch(str1)

            {

                case "red":

                    Console.WriteLine("IT IS RED");

                    break;

                case "green":

                    Console.WriteLine("IT IS GREEN");

                    break;

                case "blue":

                    Console.WriteLine("IT IS BLUE");

                    break;

​

            }

​

    }

}