using System;

​

public class Vehicle

{

    private string make;

    private int model;

    public Vehicle(){}

    public Vehicle(string make,int model)

    {

        this.make = make;

        this.model = model;

    }

    //property for make

    public string Make

    {

        get{ return make;}

        set{make = value;}

    }

    //property for model

    public int Model

    {

        get{return model;}

        set{model = (value >= 1900 && value <= 2016 ? value : 0);}

    }

    //display string

    public string BuiltString()

    {

        return "Model: " + model + "\nMake: "+ make;

    }

}

​

public class Car : Vehicle

{

    private string regNumber;

    private string fuelType;

    private double engineSize;

    private int passengers;

    public Car(){}

    public Car(string regNumber,string fuelType,double engineSize,int passengers,string make,int model) : base(make,model)

    {

        this.regNumber = regNumber;

        this.fuelType = fuelType;

        this.engineSize = engineSize;

        this.passengers = passengers;

    }

     new public string BuiltString()

    {

        return base.BuiltString() + "\nREGISTRATION: " + regNumber + "\nFUEL TYPE: " + fuelType + "\nENGINE SIZE: " 

                                + engineSize + "\nPASSENGER NUMBER: " + passengers ;

    }

}

​

public class Person

{

    private string id;

    private string name;

    private Vehicle center;

    public Person(){}

    public Person(string id,string name,string make, int model)

    {

        center = new Vehicle(make,model);

        this.id = id;

        this.name = name;

    }

    public Vehicle PersonVehicle

    {

        get

        {

            return center;

        }

    }

    public string BuiltString()

    {

        return "NAME: " + name + "\nID: " + id + center.BuiltString();

    }

}

public class Program

{

    public static void Main()

    {

        Vehicle car1 = new Vehicle();

        car1.Make = "VW VrrPhaa";

        car1.Model = 2012;

        Console.WriteLine(car1.BuiltString());

        Person person1 = new Person("0312025338087","Neo","Chevrolet Cruze Ls",2016);

        Console.WriteLine();

        Console.WriteLine(person1.BuiltString());

        person1.PersonVehicle.Make = "Toyota Yaris";

        person1.PersonVehicle.Model = 2008;

        Console.WriteLine();

        Console.WriteLine(person1.BuiltString());

        Car carPerson = new Car("LESEGO#", "Unleaded", 2.2, 3, "Range Rover SS",2011);

        Console.WriteLine();

        Console.WriteLine(carPerson.BuiltString());

    }

}