using System;

using System.Collections.Generic;

using System.Linq;

public class Program

{

    public static void Main()

    {

        var names = GetNames();

        foreach(var name in names) {

            Console.Write(name + "\n");

        }

    }

    public static List<string> GetNames() {

        var people = new[] {

           new { Firstname = "Barry", Surname = "White" },

           new { Firstname = "Sheldon", Surname = "Cooper" }

        };

        var names = new List<string>();

        for (var i = 0; i < people.Length; i++)

        {

           var person = people[i];

           var name = $"{person.Surname}, {person.Firstname}";

           names.Add(name);

        }

        return names;

    }

}