using System;

​

public struct Book

{

    public string title;

    public string category;

    public string author;

    public int numPages;

    public int currentPage;

    public double ISBN;

    public string coverStyle;

    public Book(string title, string category, string author, int numPages, int currentPage, double isbn, string cover)

    {

        this.title = title;

        this.category = category;

        this.author = author;

        this.numPages = numPages;

        this.currentPage = currentPage;

        this.ISBN = isbn;

        this.coverStyle = cover;

    }

​

    public void nextPage()

    {

        if (this.currentPage != this.numPages)

        {

            this.currentPage++;

            Console.WriteLine("Current page is now: " + this.currentPage);

        }

        else

        {

            Console.WriteLine("At end of book.");

        }

    }

​

    public void prevPage()

    {

        if (this.currentPage != 1)

        {

            this.currentPage--;

            Console.WriteLine("Current page is now: " + this.currentPage);

        }

        else

        {

            Console.WriteLine("At the beginning of the book.");

        }

    }

}

​

public class Program

{

    public static void Main()

    {

        Book myBook = new Book("MCSD Certification Toolkit (Exam 70-483)", "Certification", "Covaci, Tiberiu", 648, 1, 81118612095, "Soft Cover");

        Console.WriteLine(myBook.title);

        Console.WriteLine(myBook.category);

        Console.WriteLine(myBook.author);

        Console.WriteLine(myBook.numPages);

        Console.WriteLine(myBook.currentPage);

        Console.WriteLine(myBook.ISBN);

        Console.WriteLine(myBook.coverStyle);

        myBook.nextPage();

        myBook.prevPage();

    }

}