product

using System;
using System.IO;

namespace Tovar
{
    abstract class Tovar
    {
        public abstract void ShowInfo();

        public abstract bool IsOver(DateTime aDate);
    }

    class Product : Tovar
    {
        string name;
        double price;
        DateTime dateFrom, dateOver;

        public Product(string aName, double aPrice, string strDateFrom, string strLifeDays)
        {
            this.name = aName;
            this.price = aPrice;
            this.dateFrom = Convert.ToDateTime(strDateFrom);
            this.dateOver = Convert.ToDateTime(strLifeDays);
        }

        public override void ShowInfo()
        {
            Console.WriteLine("Название: {0}\nЦена: {1}\nДата производства: {2}\nСрок годности: {3}", name, price, dateFrom.ToShortDateString(), dateOver.ToShortDateString());
        }

        public override bool IsOver(DateTime aDate)
        {
            return DateTime.Compare(this.dateOver, aDate) < 0;
        }
    }

    class Partia : Tovar
    {
        string name;
        double price;
        int count;
        DateTime dateFrom, dateOver;

        public Partia(string aName, double aPrice, int aCount, string strDateFrom, string strLifeDays)
        {
            this.name = aName;
            this.price = aPrice;
            this.count = aCount;
            this.dateFrom = Convert.ToDateTime(strDateFrom);
            this.dateOver = Convert.ToDateTime(strLifeDays);
        }

        public override void ShowInfo()
        {
            Console.WriteLine("Название: {0}\nЦена: {1}\nКоличество: {2}\nДата производства: {3}\nСрок годности: {4}", name, price, count, dateFrom.ToShortDateString(), dateOver.ToShortDateString());
        }

        public override bool IsOver(DateTime aDate)
        {
            return DateTime.Compare(this.dateOver, aDate) < 0;
        }
    }



    class Program
    {
        static void Main()
        {

            Tovar[] arTovars = {
                new Product("макрона",  40,     "2019.02.18", "2019.06.18"),
                new Product("тушенка", 120,     "2019.01.18", "2019.08.18"),
                new Product("кабачьек", 160,    "2019.04.18", "2019.02.18"),
                new Partia("макроны", 3000, 50, "2019.05.10", "2019.06.10"),
                new Partia("огурцы", 2000, 100, "2019.04.18", "2019.05.17")
            };

            DateTime localTime = DateTime.Now;
            Console.WriteLine("Сегодняшняя дата: {0}\n------------", localTime.ToShortDateString());

            for (int i = 0; i < arTovars.Length; i++)
            {
                arTovars[i].ShowInfo();
                if (arTovars[i].IsOver(localTime))
                    Console.WriteLine("Товар просрочен!");

                Console.WriteLine("------------");
            }

        }


    }


}