using System;

public class Program

{

    public static void Main()

    {

        string[] guestList = {"Rebecca", "Nadia", "Noor", "Jonte"};

        string[] rsvps = new string[10];

        int count = 0;

        RSVP("Rebecca", 1, "none", true);

        RSVP("Nadia", 2, "Nuts", true);

        RSVP("Linh", 2, "none", false);

        RSVP("Tony", 1, "Jackfruit", true);

        RSVP("Noor", 4, "none", false);

        RSVP("Jonte", 2, "Stone fruit", false);

        ShowRSVPs();

​

        void RSVP(string name, int partySize, string allergies, bool inviteOnly) 

        {

            if (inviteOnly)

            {

                bool found = false;

                foreach (string guest in guestList)

                {

                    if (guest.Equals(name)) {

                        found = true;

                        break;

                    }

                }

                if (!found)

                {

                    Console.WriteLine($"Sorry, {name} is not on the guest list");

                    return;

                }

            }

​

            rsvps[count] = $"Name: {name}, \tParty Size: {partySize}, \tAllergies: {allergies}";

            count++;

        }

​

        void ShowRSVPs()

        {

            Console.WriteLine("\nTotal RSVPs:");

            for (int i = 0; i < count; i++)

            {

                Console.WriteLine(rsvps[i]);

            }

        }

    }

}