using System;

using System;

using System.Collections.Generic;

public class Program

{

    public static void Main()

    {

​

            List<string> members = new List<string>();

            List<double> income = new List<double>();

            while (true)

            {

                Console.WriteLine("\nHousehold Income App\nOptions:\nA - Add Member\nB - Search Member\nC - Edit Member\nD - Summary\nE - Exit");

                string option = Console.ReadLine();

                if (option == "A" || option == "a")

                {

                    Console.Write("Enter Name: ");

                    string name = Console.ReadLine();

                    members.Add(name);

                    Console.Write("Enter Income: ");

                    double memincome = double.Parse(Console.ReadLine());

                    income.Add(memincome);

                    Console.Write("\nMember Added");

                }

                else if (option == "B" || option == "b")

                {

                    Console.Write("Enter Index Number: ");

                    int i = int.Parse(Console.ReadLine());

                    if (i < members.Count)

                    {

                        Console.WriteLine("Member Name: " + members[i] + "  Income: " + income[i]);

                    }

                    else 

                        Console.WriteLine("No Such Index Number");

                }

                else if (option == "C" || option == "c")

                {

                    Console.Write("Enter Index Number: ");

                    int i = int.Parse(Console.ReadLine());

                    if (i < members.Count)

                    {

                        Console.WriteLine("Enter New Income: ");

                        income[i] = double.Parse(Console.ReadLine());

                        Console.WriteLine("Updated Info\nMember Name: " + members[i] + " Income: " + income[i]);

                    }

                    else

                    {

                    Console.WriteLine("No Such Index Number.");

                    }

                    }

                else if (option == "D" || option == "d")

                    {

                    Console.Clear();

                    double sum = 0;

                    for (int i = 0; i < members.Count; i++)

                    {Console.WriteLine("Members: "+members[i]+"Income: "+income[i]);

                    sum += income[i];}

                    Console.WriteLine("Total Income: "+sum+" Average Income: "+(sum/members.Count));

                }

                else

            {

​

                Console.WriteLine("Thank You");

                break;

            }

        }

​

​

    }

    }