Mar29 OOP

// ================[Test.cs]======================
public static void Mar29_ToysForAll()
        {
            Mar29.ToysForAll tfa = new Mar29.ToysForAll();
            Mar29.Branch branch = new Mar29.Branch("New York City");
            Mar29.Car car = new Mar29.Car("China", "Xiao Bei", 100);
            branch.AddCar(car);
            Mar29.Car_Spring carSpring = new Mar29.Car_Spring("China", "Xiao Bei", 200, false);
            branch.AddCar(carSpring);
            Mar29.Car_Electric carElectric = new Mar29.Car_Electric("China", "Xiao Bei", 300, false);
            branch.AddCar(carElectric);
            Mar29.Car_Electric_Remote carElectricRemote = new Mar29.Car_Electric_Remote("China", "Xiao Bei", 400, false, false);
            branch.AddCar(carElectricRemote);
            int[] stock = branch.GetStockQuantity();
            Console.WriteLine($"[{branch.address} Stock]");
            Console.WriteLine($"Total Cars: {stock[0]}");
            Console.WriteLine($"Regular Cars: {stock[1]}");
            Console.WriteLine($"Spring Cars: {stock[2]}");
            Console.WriteLine($"Electric Cars: {stock[3]}");
            Console.WriteLine($"Remote Electric Cars: {stock[4]}");
            tfa.AddBranch(branch);

            Console.WriteLine();

            branch = new Mar29.Branch("San Francisco");
            car = new Mar29.Car("China", "Xiao Bei", 100);
            branch.AddCar(car);
            car = new Mar29.Car("China", "Xiao Bei", 110);
            branch.AddCar(car);
            carSpring = new Mar29.Car_Spring("China", "Xiao Bei", 200, false);
            branch.AddCar(carSpring);
            carSpring = new Mar29.Car_Spring("China", "Xiao Bei", 220, true);
            branch.AddCar(carSpring);
            carElectric = new Mar29.Car_Electric("China", "Xiao Bei", 300, false);
            branch.AddCar(carElectric);
            carElectric = new Mar29.Car_Electric("China", "Xiao Bei", 330, true);
            branch.AddCar(carElectric);
            carElectricRemote = new Mar29.Car_Electric_Remote("China", "Xiao Bei", 400, true, true);
            branch.AddCar(carElectricRemote);
            carElectricRemote = new Mar29.Car_Electric_Remote("China", "Xiao Bei", 440, true, true);
            branch.AddCar(carElectricRemote);
            stock = branch.GetStockQuantity();
            Console.WriteLine($"[{branch.address} Stock]");
            Console.WriteLine($"Total Cars: {stock[0]}");
            Console.WriteLine($"Regular Cars: {stock[1]}");
            Console.WriteLine($"Spring Cars: {stock[2]}");
            Console.WriteLine($"Electric Cars: {stock[3]}");
            Console.WriteLine($"Remote Electric Cars: {stock[4]}");
            tfa.AddBranch(branch);

            Console.WriteLine();

            Console.ForegroundColor = ConsoleColor.Green;
            Console.WriteLine($"Global Price: {tfa.GetGlobalCarsPrice()}");
        }




// =================[Mar29.cs]======================
        public class Car
        {
            public string manufacturingCountry;
            public string manufacturer;
            public double price;
            public Car(string manufacturingCountry, string manufacturer, double price)
            {
                this.manufacturingCountry = manufacturingCountry;
                this.manufacturer = manufacturer;
                this.price = price;
            }
        }

        public class Car_Spring : Car
        {
            public bool springPull;
            public Car_Spring(string manufacturingCountry, string manufacturer, double price, bool springPull) : base(manufacturingCountry, manufacturer, price)
            {
                this.manufacturingCountry = manufacturingCountry;
                this.manufacturer = manufacturer;
                this.price = price;
                this.springPull = springPull;
            }
        }

        public class Car_Electric : Car
        {
            public bool rechargabaleBatteries;
            public Car_Electric(string manufacturingCountry, string manufacturer, double price, bool rechargabaleBatteries) : base(manufacturingCountry, manufacturer, price)
            {
                this.manufacturingCountry = manufacturingCountry;
                this.manufacturer = manufacturer;
                this.price = price;
                this.rechargabaleBatteries = rechargabaleBatteries;
            }
        }

        public class Car_Electric_Remote : Car_Electric
        {
            public bool wireless;
            public Car_Electric_Remote(string manufacturingCountry, string manufacturer, double price, bool rechargabaleBatteries, bool wireless) : base(manufacturingCountry, manufacturer, price, rechargabaleBatteries)
            {
                this.manufacturingCountry = manufacturingCountry;
                this.manufacturer = manufacturer;
                this.price = price;
                this.rechargabaleBatteries = rechargabaleBatteries;
                this.wireless = wireless;
            }
        }

        public class Branch
        {
            public string address;
            public Node<Car> cars;
            public int totalCars;
            public double totalCarsPrice;

            public Branch(string address)
            {
                this.address = address;
                cars = null;
                totalCars = 0;
                totalCarsPrice = 0;
            }

            public void AddCar(Car car)
            {
                cars = new Node<Car>(car, cars);
                totalCars++;
                totalCarsPrice += car.price;
            }

            public int[] GetStockQuantity()
            {
                // Total, Car_Spring, Car_Electric, Car_Electric_Remote
                int[] stock = new int[] { 0, 0, 0, 0, 0 };
                Node<Car> scan = cars;
                while (scan != null)
                {
                    stock[0]++;
                    if (scan.GetInfo() is Car &&
                        scan.GetInfo() is Car_Spring == false &&
                        scan.GetInfo() is Car_Electric == false)
                        stock[1]++;
                    if (scan.GetInfo() is Car_Spring)
                        stock[2]++;
                    if (scan.GetInfo() is Car_Electric && scan.GetInfo() is Car_Electric_Remote == false)
                        stock[3]++;
                    if (scan.GetInfo() is Car_Electric_Remote)
                        stock[4]++;
                    scan = scan.GetNext();
                }
                return stock;
            }

            public double[] GetStockPrice()
            {
                                        // Total, Car_Spring, Car_Electric, Car_Electric_Remote
                double[] stock = new double[] { 0.0, 0.0, 0.0, 0.0, 0.0 };
                Node<Car> scan = cars;
                while(scan != null)
                {
                    stock[0] += scan.GetInfo().price;
                    if (scan.GetInfo() is Car &&
                        scan.GetInfo() is Car_Spring == false &&
                        scan.GetInfo() is Car_Electric == false)
                        stock[1]++;
                    if (scan.GetInfo() is Car_Spring)
                        stock[2] += scan.GetInfo().price;
                    if (scan.GetInfo() is Car_Electric && scan.GetInfo() is Car_Electric_Remote == false)
                        stock[3] += scan.GetInfo().price;
                    if (scan.GetInfo() is Car_Electric_Remote)
                        stock[4] += scan.GetInfo().price;
                    scan = scan.GetNext();
                }
                return stock;
            }

            public void SetCarPrice(int carType, double price)
            {
                Node<Car> scan = cars;

                // Nesting While instead of nesting if statement to lower runtime
                if (carType == 0) // All
                {
                    while (scan != null)
                    {
                        scan.GetInfo().price = price;
                        scan = scan.GetNext();
                    }
                }
                if (carType == 1) // Car_Spring
                {
                    while (scan != null)
                    {
                        if (scan.GetInfo() is Car_Spring)
                            scan.GetInfo().price = price;
                        scan = scan.GetNext();
                    }
                }
                if (carType == 2) // Car_Electric
                {
                    while (scan != null)
                    {
                        // Excluding Car_Electric_Remote cars.
                        if (scan.GetInfo() is Car_Electric && scan.GetInfo() is Car_Electric_Remote == false)
                            scan.GetInfo().price = price;
                        scan = scan.GetNext();
                    }
                }
                if (carType == 3) // Car_Electric_Remote
                {
                    while (scan != null)
                    {
                        if (scan.GetInfo() is Car_Electric_Remote)
                            scan.GetInfo().price = price;
                        scan = scan.GetNext();
                    }
                }


            }
        }

        public class ToysForAll
        {
            public Node<Branch> branches;
            public int branchesCount;
            public ToysForAll()
            {
                branches = null;
                branchesCount = 0;
            }

            public void AddBranch(Branch branch)
            {
                branches = new Node<Branch>(branch, branches);
                branchesCount++;
            }

            public double GetGlobalCarsPrice()
            {
                double totalPrice = 0;
                Node<Branch> scan = branches;
                while(scan != null)
                {
                    totalPrice += scan.GetInfo().totalCarsPrice;
                    scan = scan.GetNext();
                }
                return totalPrice;
            }
        }