using System;

public class Program

{

    public static void Main()

    {

        Vehicle vehicle = new Vehicle("Chevy", "Silverado", 2000);

        Console.WriteLine(vehicle.DisplayInfo());

        Car car = new Car("Jeep", "Wrangler", 2014, 4, true);

        Console.WriteLine(car.DisplayInfo());

    }

}

​

internal class Vehicle

{

    public Vehicle()

    {

        Make = "Mazda";

        Model = "CX5";

        Year = 2019;

    }

    public Vehicle(string make, string model, int year)

    {

        Make = make;

        Model = model;

        Year = year;

    }

    public string Make { get; set; }

    public string Model { get; set; }

    public int Year { get; set; }

    public string DisplayInfo()

    {

        return ($"You have a {Year} {Make} {Model}");

    }

}

​

internal class Car : Vehicle

{

    public Car()

    {

        NumberOfDoors = 4;

        IsConvertible = false;

    }

    public Car(string make, string model, int year, int numDoors, bool isConvert) : base(make, model, year)

    {

        NumberOfDoors = numDoors;

        IsConvertible = isConvert;

    }

    public int NumberOfDoors { get; set; }

    public bool IsConvertible { get; set; }

    new public string DisplayInfo()

    {

        string yes = "";

        if (IsConvertible == true)

        {

            yes = "is";

        }

        else 

        {

            yes = "is not";

        }

        return ($"You have a {Year} {Make} {Model} with {NumberOfDoors} doors that {yes} a convertible");

    }

}