Class Vehicles C# Exercise - C# Programming Course

// Import the System namespace for basic functionality
using System;

// Define the main class containing all vehicle-related classes
public class VehiclesDemo
{
    // Define the base class Vehicle
    public class Vehicle
    {
        // Declare a private field for the vehicle's speed
        private int speed;
        // Declare a private field for the vehicle's color
        private string color;

        // Define a public method to set the vehicle's speed
        public void SetSpeed(int speed)
        {
            // Assign the speed parameter to the speed field
            this.speed = speed;
        }

        // Define a public method to get the vehicle's speed
        public int GetSpeed()
        {
            // Return the speed of the vehicle
            return speed;
        }

        // Define a public method to set the vehicle's color
        public void SetColor(string color)
        {
            // Assign the color parameter to the color field
            this.color = color;
        }

        // Define a public method to get the vehicle's color
        public string GetColor()
        {
            // Return the color of the vehicle
            return color;
        }

        // Define a virtual method for driving
        public virtual void Drive()
        {
            // Print a message indicating that the vehicle is driving
            Console.WriteLine("The vehicle is driving.");
        }
    }

    // Define the Car class, inheriting from Vehicle
    public class Car : Vehicle
    {
        // Declare a private field for the number of doors in the car
        private int numberOfDoors;

        // Define a public method to set the number of doors
        public void SetNumberOfDoors(int doors)
        {
            // Assign the doors parameter to the numberOfDoors field
            numberOfDoors = doors;
        }

        // Define a public method to get the number of doors
        public int GetNumberOfDoors()
        {
            // Return the number of doors
            return numberOfDoors;
        }

        // Override the Drive method to specify that a car is driving
        public override void Drive()
        {
            // Print a message indicating that the car is driving
            Console.WriteLine("The car is driving.");
        }
    }

    // Define the Truck class, inheriting from Vehicle
    public class Truck : Vehicle
    {
        // Declare a private field for the load capacity of the truck
        private int loadCapacity;

        // Define a public method to set the load capacity
        public void SetLoadCapacity(int capacity)
        {
            // Assign the capacity parameter to the loadCapacity field
            loadCapacity = capacity;
        }

        // Define a public method to get the load capacity
        public int GetLoadCapacity()
        {
            // Return the load capacity
            return loadCapacity;
        }

        // Override the Drive method to specify that a truck is driving
        public override void Drive()
        {
            // Print a message indicating that the truck is driving
            Console.WriteLine("The truck is driving.");
        }
    }

    // Define the MiniVan class, inheriting from Vehicle
    public class MiniVan : Vehicle
    {
        // Declare a private field to indicate if the minivan has dual sliding doors
        private bool hasDualSlidingDoors;

        // Define a public method to set if the minivan has dual sliding doors
        public void SetDualSlidingDoors(bool hasDoors)
        {
            // Assign the hasDoors parameter to the hasDualSlidingDoors field
            hasDualSlidingDoors = hasDoors;
        }

        // Define a public method to check if the minivan has dual sliding doors
        public bool HasDualSlidingDoors()
        {
            // Return true if the minivan has dual sliding doors
            return hasDualSlidingDoors;
        }

        // Override the Drive method to specify that a minivan is driving
        public override void Drive()
        {
            // Print a message indicating that the minivan is driving
            Console.WriteLine("The minivan is driving.");
        }
    }

    // Define the main entry point of the program
    public static void Main()
    {
        // Create a Vehicle object, set attributes, and call the Drive method
        Vehicle vehicle = new Vehicle();
        vehicle.SetSpeed(50);
        vehicle.SetColor("Red");
        vehicle.Drive();

        // Create a Car object, set attributes, and call the Drive method
        Car car = new Car();
        car.SetSpeed(80);
        car.SetColor("Blue");
        car.SetNumberOfDoors(4);
        car.Drive();

        // Create a Truck object, set attributes, and call the Drive method
        Truck truck = new Truck();
        truck.SetSpeed(60);
        truck.SetColor("Black");
        truck.SetLoadCapacity(1000);
        truck.Drive();

        // Create a MiniVan object, set attributes, and call the Drive method
        MiniVan minivan = new MiniVan();
        minivan.SetSpeed(70);
        minivan.SetColor("White");
        minivan.SetDualSlidingDoors(true);
        minivan.Drive();
    }
}