using System;

public class Program

{

    public static void Main()

    {

        //create the engine object

        Engine engine = new Engine();

        engine.Size = 4;

        engine.Power = 5;

        //create the carobject

        Car car = new Car();

        car.Size = "Mid Size";

        car.SeatingCapacity = 5;

        //add the engine object to the car object

        car.Engine = engine;

        int engineValue = car.Engine.CalulateAValue();

        //return the engine value for the car

        Console.WriteLine("The size of the engine is: " + car.Engine.Size.ToString());

    }

}

​

​

public class Engine

{

  public int Size;

  public int Power;

    //functions or methods here pertaining to the engine.

 public int CalulateAValue()

 {

     return Size*Power;

 }

}

​

​

public class Car

{

    public string Size; 

    public int SeatingCapacity;

    //Engine Object

    public Engine Engine;       

    //functions or methods here pertaining to the engine.

}