#5CheckForAPlayCard

using System;

class CheckForAPlayCard
{
    static void Main()
    {
        Console.WriteLine("Enter a string to check whether it's a play card sign.");
        string userInput = Console.ReadLine();
        switch (userInput)
        {
            case "2":
            case "3":
            case "4":
            case "5":
            case "6":
            case "7":
            case "8":
            case "9":
            case "10":
            case "J":
            case "j":
            case "Q":
            case "q":
            case "K":
            case "k":
            case "A":
            case "a":
                {
                    Console.WriteLine("{0} is a valid play card sign.", userInput);
                    break;
                }
            default:
                {
                    Console.WriteLine("{0} is not a valid play card sign.", userInput);
                    break;
                }
        }
    }
}