/* * A query that receives a reference to an ISBN object and returns true * if the Order object is for that ISBN, false otherwise */ int Order::has(const ISBN& isbn) const { bool flag = false; ISBNPrefix list(PREFIX); if (isbn == ISBN(isbnNo.getISBN(), list)) flag = true; return flag; }
const Book& default_book() { static const Book b(ISBN(),"","",0,Book::fiction,false); return b; }