Упражнения: Полиморфизъм I
1.  Превозни средства

class Car : Vehicle
{
        private const double AirConditionPrice = 0.9;

        public Car(double fuelQuantity, double fuelConsumation) :
            base(fuelQuantity, fuelConsumation,true)
        {
        }

        protected override double AirCondition => AirConditionPrice;

        public override string Name =>"Car" ; //this.GetType().Name

        public override string Drive(double km)
        {
            if (IsAirConditionOn)
            {
                this.FuelConsumation += AirCondition;
            }
            return base.Drive(km);
        }
}


class Truck : Vehicle
{
        private const double AirConditionPrice = 1.6;

        public Truck(double fuelQuantity, double fuelConsumation) :
            base(fuelQuantity, fuelConsumation, true)
        {
        }

        public override string Name => "Truck";

        protected override double AirCondition => AirConditionPrice;

        public override string Drive(double km)
        {
            if (IsAirConditionOn)
            {
                FuelConsumation += AirCondition;
            }
            return base.Drive(km);
        }

        public override void Refuel(double liters)
        {
            this.FuelQuantity += liters * 0.95;
        }
}

abstract class Vehicle
{
        public double FuelQuantity { get; set; }

        public double FuelConsumation { get; set; }

        public  bool IsAirConditionOn { get;  set; }

        protected abstract double AirCondition { get; }

        public abstract string Name { get; }

        protected Vehicle(double fuelQuantity,double fuelConsumation,
            bool isAirConditionOn)
        {
            this.FuelQuantity = fuelQuantity;
            this.FuelConsumation = fuelConsumation;
            this.IsAirConditionOn = isAirConditionOn;
        }

        public virtual string Drive(double km)
        {
            var neededFuel =this.FuelConsumation * km;
            if (neededFuel>FuelQuantity)
            {
                return $"{Name} needs refueling";
            }
            else
            {
                this.FuelQuantity -= neededFuel;
                return $"{Name} travelled {km} km";
            }
        }

        public virtual void Refuel(double liters)
        {
            this.FuelQuantity += liters;
        }

        public override string ToString()
        {
            return $"{Name}: {this.FuelQuantity:f2}";
        }
}


static void Main(string[] args)
{
            List<Vehicle> vehicle = new List<Vehicle>();

            for (int i = 0; i < 2; i++)
            {
                var line = Console.ReadLine().Split();

                var type = line[0];
                var quantity = double.Parse(line[1]);
                var consumation = double.Parse(line[2]);

                switch (type)
                {
                    case "Car":
                        vehicle.Add(new Car(quantity,consumation));
                        break;
                    case "Truck":
                        vehicle.Add(new Truck(quantity, consumation));
                        break;
                    default:
                        break;
                }
            }

            int n = int.Parse(Console.ReadLine());

            for (int i = 0; i < n; i++)
            {
                var line = Console.ReadLine().Split();

                var comand = line[0];
                var type = line[1];

                string result;

                var vehicleType = vehicle.FirstOrDefault(x => x.Name == type);

                switch (comand)
                {
                    case "Drive":
                        double km = double.Parse(line[2]);
                        result= vehicleType.Drive(km);
                        Console.WriteLine(result);
                        break;
                    case "Refuel":
                        double liters = double.Parse(line[2]);
                        vehicleType.Refuel(liters);
                        break;
                    default:
                        break;
                }
            }

            vehicle.ForEach(Console.WriteLine);
}