using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Please enter a letter.");

        char letter;

        letter = Convert.ToChar(Console.ReadLine());

        int ascii =0;

        ascii = Convert.ToInt16(letter);

        if (ascii> 96 && ascii<123 )

        {

            Console.WriteLine("Lowercase entered.");

        }

        else if (ascii> 64 && ascii<91)

        {

            Console.WriteLine("Uppercase entered.");

        }

        else

        {

            Console.WriteLine("Please enter correct value.");

        }

    }

}