using System;

public class Program

{

    public static void Main()

    {

        book[]books=new book[3];

        books[0]= new book(123,"book" );

        books[1]= new book(1234 , "other book");

        books[2]=new book(12345, "other book 2" );

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

        Console.WriteLine(books[i]);

    }

}

​

public class book

{

 private int number ;

 private string name;

​

public book(int number, string name)

{

    this.number=number; 

        this.name=name;

}

    public int Getnumber()

    {

    return this.number;

    }

    public string Getname()

    {

    return this.name;

    }

    public void Setnumber(int n)

    {

    this.number=n;

    }

    public void Setname(string nm)

    {

    this.name=nm;

    }

    public override string ToString()

    {

    return (this.number +"," + this.name);

    }

    public bool Equals(book other)

    {

        if(this.name==other.Getname())

        {

    return true;

    }

        else

        {

        return false;   

        }

    }

}