using System;

​

public class SmartPhone

{

    private string owner;

    private int year;

    private double price;

    private int battery;

    private string[] application;

    public SmartPhone(string newOwner, int newYear, double newPrice, int battery, string[] application)

    {

        this.owner = newOwner;

        this.year = newYear;

        this.price = newPrice;

        this.battery = battery;

        this.application = application;

    }

​

    public SmartPhone(SmartPhone other)

    {

        this.owner = other.owner;

        this.year = other.year;

        this.price = other.price;

        this.battery = other.battery;

        this.application = other.application;

    }

​

    public string GetOwner()

    {

        return this.owner;

    }

​

    public int GetYear()

    {

        return this.year;

    }

​

    public double GetPrice()

    {

        return this.price;

    }

​

    public int GetBattery()

    {

        return this.battery;

    }

​

    public string[] GetApplication()

    {

        return this.application;

    }

​

    public void SetOwner(string owner)

    {

        this.owner = owner;

    }

​

    public void SetPrice(double price)

    {

        this.price = price;

    }

​

    public void SetYear(int year)

    {

        this.year = year;

    }

​

    public void SetBattery(int battery)

    {

        this.battery = battery;

    }

​

    public void AddApplication(string newApplication)

    {

        int index = 0;

        while (this.application[index] != null)

        {

            index++;

        }

​

        if (index < this.application.Length)

        {

            this.application[index] = newApplication;

        }

    }

​

    public void RemoveApplication()

    {

        int index = this.application.Length - 1;

        while (this.application[index] == null)

        {

            index--;

        }

​

        if (index >= 0)

        {

            this.application[index] = null;

        }

    }

​

    public override string ToString()

    {

        string smartphoneString = "Smartphone- \n" + "Owner = " + this.GetOwner() + "\n" + "year = " + this.GetYear() + "\n" + "price = " + this.GetPrice() + "\n" + " battery " + this.GetBattery() + "\n " + "Applications = \n";

        int index = 0;

        while (this.application[index] != null)

        {

            smartphoneString += "Application #" + index + ": " + this.application[index] + "\n";

        }

​

        return smartphoneString;

    }

}

​

public class Program

{

    public static void Main()

    {

        string[] apps1 = {"youtube", "instagram", "Whatsapp", "Fortnite"};

        SmartPhone s1 = new SmartPhone("itay", 2000, 2000, 10, apps1);

        string[] apps2 = {"youtube", "instagram", "Whatsapp", "Fortnite"};

        SmartPhone s2 = new SmartPhone("Tal", 2000, 2000, 100, apps2);

        string[] apps3 = {"youtube", "instagram", "Whatsapp", "Fortnite"};

        SmartPhone s3 = new SmartPhone("Idan", 1000, 2000, 100, apps3);

        Console.WriteLine(s1 + "\n" + s2 + "\n" + s3);

        SmartPhone[] smartphones = {s1, s2, s3};

        double maxprice = 0;

        double silver = 0;

        int index = 0;

        int index2 = 0;

        for (int i = 0; i < smartphones.Length; i++)

        {

            double newPrice = 1.2 * smartphones[i].GetPrice();

            smartphones[i].SetPrice(newPrice);

            if (smartphones[i].GetBattery() < 30)

            {

                smartphones[i].SetBattery(100);

            }

​

            if (smartphones[i].GetPrice() > maxprice)

            {

                maxprice = smartphones[i].GetPrice();

                index = i;

            }

            else if (smartphones[i].GetPrice()<maxprice && smartphones[i].GetPrice()>silver)

            {

                silver = smartphones[i].GetPrice();

                index2 = i;

            }

        }

        Console.WriteLine("the most expensive is " + smartphones[index] + "and the secind one is " + smartphones[index2]);

        Console.WriteLine(smartphones[index]);

            SmartPhone s4 = new SmartPhone(s1);

        Console.WriteLine("enter new owner");

        string  newowner =Console.ReadLine();

         s1.SetOwner(newowner);

        Console.WriteLine(s1 + "\n" + s2 + "n" + s3);

    }

}