using System;

​

public class Book

{

    public string name;

    public string author;

    //amount - стоимость

    public float amount;

    public Book(string name, string author, float amount)

    {

        this.name = name;

        this.author = author;

        this.amount = amount;

    }

​

    public override string ToString()

    {

        return "Название: " + this.name + ", автор; " + this.author + ", сумма: " + this.amount;

    }

​

    public override bool Equals(Object obj)

    {

        if (obj is Book)

        {

            Book book = (Book)obj;

            return this.name == book.name && this.author == book.author && this.amount == book.amount;

        }

        else

        {

            return false;

        }

    }

}

​

//shape - фигура

public abstract class Shape

{

    //square - площадь

    public abstract float getSquare();

    public abstract float getPerim();

    public abstract string getInfo();

    public abstract string Name

    {

        get;

    }

}

​

public class Kvadrat : Shape

{

    public float side;

    public string name;

    public Kvadrat(float side, string name)

    {

        this.side = side;

        this.name = name;

    }

    public override float getSquare()

    {

        return this.side * this.side;   

    }

    public override float getPerim()

    {

        return this.side * 4;

    }

    public override string getInfo()

    {

        return "Длина стороны: " + this.side + ", название фигуры: " + this.name;

    }

    public override string Name

    {

        get

        {

            return name;

        }

    }

}

​

public class RandomBoolean : Random

{

    public bool[] BoolArray(int size)

    {

        bool[] boolArray = new bool[size];

        for(int i = 0; i < size; i++)

        {

            boolArray[i] = base.Next(0,1) == 0;

        }

        return boolArray;

    }

}

​

public class Program

{

    public static void Main()

    {

        //Задание 1

        Book book = new Book("1984", "G. Orwell", 315.4F);

        Console.WriteLine(book.ToString());

        Console.WriteLine(book);

        //Задание 2

        Book book1 = new Book("1984", "G. Orwell", 315.4F);

        Book book2 = new Book("Call of Ktulhu", "H. Lovecraft", 322.2F);

        Book book3 = new Book("Trainspotting", "I. Welsh", 321.4F);

        if (book.Equals(book1))

        {

            Console.WriteLine("книги {0} и {1} равны", book.ToString(), book1.ToString());

        }

​

        if (book2.Equals(book3))

        {

            Console.WriteLine("книги {0} и {1} равны", book2.ToString(), book3.ToString());

        }

    //Заданиие 3

    }

}