using System;

​

public class Program

{

    public static void Main()

    {

        /*Only do these once you have finished making the constructors for the classes below*/

​

        //Create a new patient

        Patient amandaPatient = new Patient();

​

        //Create a new user, passing in no values

        User amandaUser = new User();

​

​

        //Create a new user, passing in a user id and username  

        User secondUser = new User(18, "John");     

    }

}

​

public class Patient

{

    public long Id { get; set; }

    public string Name { get; set; }

​

    //Create a constructor that takes in no parameters and sets the Id to -1

    public Patient()

    {

        Id = -1;

    }

}

​

public class User

{

    public long Id { get; set; }

    public string Username { get; set; }

    public Patient Patient { get; set; }

​

    //Create a constructor that takes in no parameters and makes it so the Patient isn't null when a new instance of User is created

    public User()

    {

        Patient = new Patient();

    }

​

    //Create a constructor that takes in a user id and username and sets Id and Username to those values and makes it so the Patient isn't null when a new instance of User is created

    public User(long id, string username)

    {

        Id = id;

        Username = username;

        Patient = new Patient();

    }

}