ОпределениеПросрочки

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

namespace ОпределениеПросрочки
{
    class Program
    {
        static void Main(string[] args)
        {
            Menu menu = new Menu();
            menu.Run();
        }
    }

     class Menu
    {
        private int _dateOfCheck;
        private List<Stew> _stews;

        public Menu()
        {
            _dateOfCheck = 2021;
            _stews = new List<Stew>()
            {
                new Stew("YummyStew", 2000, 23),
                new Stew("Stew №1", 1945, 50),
                new Stew("OneStew", 1901, 70),
                new Stew("Milit", 1941, 100)
            };
        }

        public void Run()
        {
            bool isRun = true;

            while (isRun)
            {
                Console.WriteLine("\n1)Вывести все просроченных банок тушенки\n" +
                    "2)Выход");
                Console.Write("Ввод: ");

                switch (Console.ReadLine())
                {
                    case "1":
                        ShowExpiredStew();
                        break;
                    case "2":
                        isRun = false;
                        break;
                }
            }
        }

        private void ShowExpiredStew()
        {
            var filteredStew = _stews.Where(stew => (stew.ProductionYear + stew.ShelfLife) < _dateOfCheck);

            Console.WriteLine("Просрочены следующие продукты:");
            foreach (var stew in filteredStew)
            {
                Console.WriteLine(stew.Name);
            }
        }
    }

    class Stew
    {
        public string Name { get; private set; }
        public int ProductionYear { get; private set; }
        public int ShelfLife { get; private set; }

        public Stew(string name, int productionYear, int shelfLife)
        {
            Name = name;
            ProductionYear = productionYear;
            ShelfLife = shelfLife;
        }
    }
}