static void Main(string[] args)
        {
            //Changing user input to lower case, then comparing with string.

            //string sElvish = "elvish";

            //string userInput = Console.ReadLine();

            //string lowerUserInput = userInput.ToLower();

            //Console.WriteLine(lowerUserInput);

            //if (lowerUserInput == sElvish)
            //{
            //    //do something here.
            //}

            //else
            //{
            //    //Do something else here.
            //}

            //Console.ReadLine();

            //Getting user input then comparing that to an array.

            string[] myArray = new string[] { "Elvish", "elvish" };

            string userInput = Console.ReadLine();
            if (myArray.Contains(userInput))
            {
                //Do something here.
            }

            else
            {
                //Do something different here.
            }

            Console.ReadLine();
        }