Indexer C#

using System;
public class addd
{
    public string[] girlfriend = new string[3];

    public string this[int i]
            {
                get
                {
                    return girlfriend[i];
                }
                set
                {
                    girlfriend[i] = value;
                }
            }
}

public class Program
{
    public static void Main()
    {
        addd obj = new addd();
        obj[0] = "Riya the Kid";
        obj[1] = "Riya the KID";
        obj[2] = "Riya the kid";

        for(int i=0;i<3;i++) {
            Console.WriteLine(obj[i]);
        }
    }
}