namespace Bookshelf
{
    class Bookshelf
    {
        public string BookName;
        public string Genre;
        public string Author;
        public double Price;
        public int BookNumber;


        public string BookNameProps
        {
            get
            { return BookName; }

            set
            {
                if (value == "")
                {
                    Console.WriteLine("Author cannot be empty !!!");
                    return;
                }
                BookName = value;
            }

        }

        public string GenreProps
        {
            get
            { return Genre; }

            set
            {
                if (value == "")
                {
                    Console.WriteLine("Genre cannot be empty !!!");
                    return;
                }
                Genre = value;
            }

        }

        public string AuthorProps
        {
            get
            { return Author; }

            set
            {
                if (value == "")
                {
                    Console.WriteLine("Author cannot be empty !!!");
                    return;
                }
                Author = value;
            }

        }

        public double PriceProps
        {
            get { return Price; }

            set
            {
                if (value <= 0)
                {
                    Console.WriteLine("Price cannot be zero or lower !!!");
                    return;
                }
                Price = value;
            }
        }
        public int BookNumberProps
        {
            get { return BookNumber; }
            set
            {
                if (value <= 0)
                {
                    Console.WriteLine("Book number cannot be zero or lower !!!");
                    return;
                }
                BookNumber = value;
            }
        }


    }
}