using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ConsoleApp2
{
    public class Car
    {
        public string make { get; set; }
        public int price { get; set; }
        public int year { get; set; }

        public Car()
        {
            make = "empty";
            price = 0;
            year = 0;
        }

        public Car(string a, int b, int c)
        {
            make = a;
            price = b;
            year = c;
        }
    }

    public class AllCars
    {
        public List<Car> CarList { get; set; }

        public AllCars()
        {
            CarList = new List<Car>();
        }

        public int Price_Average()
        {
            int total_price = 0;
            int average_price = 0;

            foreach (var i in CarList)
            {
                total_price += i.price;
            }

            average_price = total_price / CarList.Count;
            return average_price;
        }
    }
    class Program
    {
        static void Main(string[] args)
        {
            Car a = new Car("Aston Martin", 50000, 2012);
            Car b = new Car("BMW", 30000, 2014);
            Car c = new Car("Cheverolet", 20000, 2013);
            Car d = new Car("Datsun", 2000, 2001);

            AllCars all = new AllCars();

            all.CarList.Add(a);
            all.CarList.Add(b);
            all.CarList.Add(c);
            all.CarList.Add(d);

            int total_price_average = all.Price_Average();

            Console.WriteLine("The avearge Car Price is " + total_price_average);
            Console.ReadLine();
        }
    }


}