ДЗ Поезда

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

namespace TrainPlanner
{
    class Program
    {
        static void Main(string[] args)
        {
            TrainPlan Planner = new TrainPlan();
            Train ActiveTrain = new Train();
            bool RunProgram = true;

            while (RunProgram)
            {
                Console.Clear();
                ActiveTrain.ShowInfo();
                Console.WriteLine("1 - Задать новый рейс\n2 - Выход");
                int userInput = Convert.ToInt32(Console.ReadLine());

                switch (userInput)
                {
                    case 1:
                        Planner.CreateRoute();
                        Planner.SellTickets();
                        Planner.FormTrain();
                        ActiveTrain = Planner.RunTrain();
                        break;
                    case 2:
                        RunProgram = false;
                        break;
                }
            }
        }

        class Car
        {
            public int Capacity;
            public Car(int carCapacity)
            {
                Capacity = carCapacity;
            }
        }

        class Train
        {
            public string Route;
            public Car[] Cars;
            public bool IsEnRoute;
            public int Capacity { get; private set; }
            public int OccupiedPlaces;

            public Train()
            {
                Cars = new Car[] { };
            }

            public void InsertCar(Car car)
            {
                Capacity += car.Capacity;
                Array.Resize(ref Cars, Cars.Length + 1);
            }

            public void ShowInfo()
            {
                if (IsEnRoute)
                {
                    Console.WriteLine($"Поезд <{Route}> - всего мест:{Capacity} - из них занято: {OccupiedPlaces}");
                }
                else
                {
                    Console.WriteLine("Состав не сформирован");
                }
            }
        }
        class TrainPlan
        {
            private Train _processedTrain;
            public int SoldTickets;

            public TrainPlan()
            {
                _processedTrain = new Train();
            }

            public void CreateRoute()
            {
                Console.WriteLine("Введите маршрут");
                _processedTrain.Route = Console.ReadLine();
            }

            public void SellTickets()
            {
                Random rand = new Random();
                SoldTickets = rand.Next(10, 1000);
            }

            public void FormTrain()
            {
                Random rand = new Random();
                int carCapacity;

                while (_processedTrain.Capacity < SoldTickets)
                {
                    carCapacity = rand.Next(30, 50);
                    _processedTrain.InsertCar(new Car(carCapacity));
                }
                _processedTrain.OccupiedPlaces = SoldTickets;
                Console.WriteLine("Общая вместимость поезда: " + _processedTrain.Capacity);
            }

            public Train RunTrain()
            {
                _processedTrain.IsEnRoute = true;
                return _processedTrain;
            }
        }
    }
}