Sinflar va obyektlar

var talaba = new Talaba("Husanboy Qodirov", 25);

talaba.BallQoshish(90);
talaba.BallQoshish(85);
talaba.BallQoshish(95);

talaba.Korsat();

class Talaba
{
    private readonly List<int> ballar = [];

    public string Ism { get; }
    public int Yosh { get; }

    public Talaba(string ism, int yosh)
    {
        Ism = ism;
        Yosh = yosh;
    }

    public void BallQoshish(int ball) => ballar.Add(ball);

    public double Ortacha => ballar.Count == 0 ? 0 : ballar.Average();

    public void Korsat()
    {
        Console.WriteLine($"{Ism}, {Yosh} yosh");
        Console.WriteLine($"Baholar soni: {ballar.Count}");
        Console.WriteLine($"O'rtacha: {Ortacha}");
    }
}

var hisob = new Hisob();

hisob.Egasi = "Malika";
hisob.Qoshish(50000);
hisob.Qoshish(30000);

Console.WriteLine($"{hisob.Egasi}: {hisob.Balans} so'm");
Console.WriteLine($"Amallar soni: {hisob.AmallarSoni}");

class Hisob
{
    private decimal balans;          // maydon - tashqaridan ko'rinmaydi
    private int amallar;

    public string Egasi { get; set; } = "";       // avto-xossa

    public decimal Balans => balans;               // faqat o'qish

    public int AmallarSoni => amallar;

    public void Qoshish(decimal miqdor)
    {
        if (miqdor <= 0)
        {
            throw new ArgumentException("Miqdor musbat bo'lishi kerak");
        }

        balans += miqdor;
        amallar++;
    }
}

var kitob = new Kitob("Alpomish") { Muallif = "Xalq dostoni", Yili = 1928 };

Console.WriteLine($"{kitob.Nom} ({kitob.Yili}) - {kitob.Muallif}");
Console.WriteLine($"Yoshi: {kitob.Yoshi} yil");

kitob.Muallif = "Fozil Yo'ldosh o'g'li";
Console.WriteLine($"Yangilandi: {kitob.Muallif}");

class Kitob
{
    public string Nom { get; }                    // faqat konstruktorda
    public string Muallif { get; set; } = "";     // o'qish va yozish
    public int Yili { get; init; }                // faqat yaratishda

    public int Yoshi => 2026 - Yili;              // hisoblanadigan

    public Kitob(string nom) => Nom = nom;
}

var m1 = new Mahsulot("Non", 4000);
var m2 = new Mahsulot("Sut", 12000);

Console.WriteLine(m1);
Console.WriteLine(m2);
Console.WriteLine($"Jami: {m1.Narx + m2.Narx} so'm");

class Mahsulot(string nom, decimal narx)
{
    public string Nom => nom;
    public decimal Narx => narx;

    public override string ToString() => $"{nom} - {narx} so'm";
}

var a = new Oddiy();
var b = new Chiroyli();

Console.WriteLine(a);
Console.WriteLine(b);

class Oddiy { }

class Chiroyli
{
    public override string ToString() => "Men o'zimni tanishtira olaman";
}

var a = new Foydalanuvchi("Husanboy");
var b = new Foydalanuvchi("Malika");
var c = new Foydalanuvchi("Nodira");

Console.WriteLine($"Yaratilgan foydalanuvchilar: {Foydalanuvchi.Soni}");
Console.WriteLine($"Oxirgisi: {c.Ism}");

class Foydalanuvchi
{
    public static int Soni { get; private set; }

    public string Ism { get; }

    public Foydalanuvchi(string ism)
    {
        Ism = ism;
        Soni++;
    }
}

var q = new Qutti();
Console.WriteLine(q.Ochiq);
Console.WriteLine(q.Korsat());

class Qutti
{
    public string Ochiq = "hamma ko'radi";
    private string yopiq = "faqat shu sinf ichida";
    protected string himoyalangan = "shu sinf va vorislari";
    internal string ichki = "shu loyiha ichida";

    public string Korsat() => $"{yopiq} / {himoyalangan} / {ichki}";
}

var m = new Manzil
{
    Viloyat = "Namangan",
    Tuman = "Chust",
    Kocha = "Navoiy",
    Uy = 14
};

Console.WriteLine(m);

class Manzil
{
    public string Viloyat { get; init; } = "";
    public string Tuman { get; init; } = "";
    public string Kocha { get; init; } = "";
    public int Uy { get; init; }

    public override string ToString() =>
        $"{Viloyat} viloyati, {Tuman} tumani, {Kocha} ko'chasi, {Uy}-uy";
}