using System;

using System.Collections.Generic;

public class Program

{

    public static void Main()

    {

            try

            {

                Console.Write("How many friends do you have? ");

                string FriendsCount = Console.ReadLine();

                int _friendsCount = Convert.ToInt32(FriendsCount);

​

                List<Friend> friends = new List<Friend>();

​

                for (int i = 1; i <= _friendsCount; i++)

                {

                    Console.Write("What is the name " + GetDaySuffix(i) + " friend: ");

                    string Name = Console.ReadLine();

​

                    Console.Write("What " + GetDaySuffix(i) + " friend lives: ");

                    string City = Console.ReadLine();

​

                    Console.Write("What is " + GetDaySuffix(i) + " friend phone #: ");

                    string PhoneNumber = Console.ReadLine();

​

                    friends.Add(new Friend { Name = Name, City = City, Phone = PhoneNumber });

​

                }

​

                foreach (var item in friends)

                {

                    Console.WriteLine(" ================================ ");

                    Console.Write(string.Format("{0} \n{1} \n{2}", item.Name, item.City, item.Phone));

                    Console.WriteLine();

                }

            }

            catch (Exception ex)

            {

                Console.WriteLine(ex.Message);

            }

        }

     static string GetDaySuffix(int count)

        {

            switch (count)

            {

                case 1:

                case 21:

                case 31:

                    return count + "st";

                case 2:

                case 22:

                    return count + "nd";

                case 3:

                case 23:

                    return count + "rd";

                default:

                    return count + "th";

            }

            //if(count == 1 || count == 21 || count == 31)

            //    return count + "st";

            //else if(count == 2 || count == 22)

            //    return count + "nd";

            //else if(count == 3 || count == 23)

            //    return count + "rd";

            //else

            //    return count + "th";

​

​

        }

}

class Friend

    {

        public string Name;

        public string City;

        public string Phone;

    }