using System;

public class Program

{

    public static void Main()

    {

        string str;

        Console.WriteLine("Enter the string:");

        str = Console.ReadLine();

        Console.WriteLine("Length of the string: "+str.Length);

        Console.WriteLine("Sub string: "+str.Substring(0,3));

        Console.WriteLine("Uppercase String: "+str.ToUpper());

        Console.WriteLine("lowercase string: "+str.ToLower());

    }

}