CheckForSignsAndNumbersInString

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace CheckForPlayCard
{
    class CheckForPlayCard
    {
        static void Main()
        {
            string CardSign;
            Console.WriteLine("Enter a card sign: ");
            CardSign = Console.ReadLine();

            switch (CardSign)
            {
                case "2":
                    Console.WriteLine("Yes!");
                    break;
                case "3":
                    Console.WriteLine("Yes!");
                    break;
                case "4":
                    Console.WriteLine("Yes!");
                    break;
                case "5":
                    Console.WriteLine("Yes!");
                    break;
                case "6":
                    Console.WriteLine("Yes!");
                    break;
                case "7":
                    Console.WriteLine("Yes!");
                    break;
                case "8":
                    Console.WriteLine("Yes!");
                    break;
                case "9":
                    Console.WriteLine("Yes!");
                    break;
                case "10":
                    Console.WriteLine("Yes!");
                    break;
                case "J":
                    Console.WriteLine("Yes!");
                    break;
                case "Q":
                    Console.WriteLine("Yes!");
                    break;
                case "K":
                    Console.WriteLine("Yes!");
                    break;
                case "A":
                    Console.WriteLine("Yes!");
                    break;
                default:
                    Console.WriteLine("No!");
                    break;

            }


        }
    }
}