using System;

using System.Collections;

​

class Customer{

    public required string firstname {get; init;}

    public string lastname {get; set;}

    public required int age{get; init;}

}

​

class VipCustomer(string carBrand, bool is_active, int prime):Customer{

    public string carBrand {get; init;} = carBrand;

    protected bool is_active = is_active;

    protected int prime = prime;

    public VipCustomer(string carBrand, bool is_active, int prime, char gender):this(carBrand,  is_active, prime){

    }

}

​

record struct Car{

    public string name{get; init;}

    public int year{get; init;}

    public string brand{get; init;}

    public Car(string name, string brand, int year){

        this.name = name;

        this.brand = brand;

        this.year = year;

    }

    public void getCarInfo(){

        Console.WriteLine($"Your car is a {this.name} of {this.brand} and release at {this.year}");

    }

}

​

record class Car2{

    public string name{get; init;}

    public int year{get; init;}

    public string brand{get; init;}

    public Car2(string name, string brand, int year){

        this.name = name;

        this.brand = brand;

        this.year = year;

    }

    public void getCarInfo(){

        Console.WriteLine($"Your car is a {this.name} of {this.brand} and release at {this.year}");

    }

}

public class Program

{

    public static void Main()

    {

        int[] numb = {1,3,4,5,7};

        int? age = 9;

        var ano = new {amount=125, message="this is a anonyme type", issue=true, price=12};

        var ano2 = ano with {amount = 85, price=43, message="this is an anonyme type copied from an another type too"};

        var c1 = new Customer(){firstname="Dubois", age=34, lastname="Alexis"};

        var c2 = new VipCustomer("Toyota", true, 100){firstname="Delaroche", age=48, lastname="Jhonny"};

        Console.WriteLine(c2.carBrand);

        var camry = new Car2("Camry", "Toyota", 2020);

        Car2 almera = new("Camry", "Toyota", 2020);

        var test = c1 == c2;

        var car1 = new Car("Cullinague","Rolce Royce", 2024);

        var c3 = car1 with {brand="Toyota"};

        camry.getCarInfo();

        Console.WriteLine(camry==almera);

        Console.WriteLine(almera.ToString());

        Console.WriteLine("Sun Jin Wo");

        //ArrayList

        ArrayList arr = new ArrayList();

        arr.Add(1);

        arr.Add(true);

        arr.Add("string");

​

    }

}