class Book {
 
private:
 
  int isbn; 
  String2002 title; 
 
public:
   // default constructor sets isbn to 0 and title to ""
   Book(); 
 
   // constructor sets isbn and title to parms provided
   Book(int isbn, const String2002 &title);
 
   // sets the ISBN and title of a book
   void set(int newIsbn, const String2002 &newTitle);
 
   // returns the ISBN of a book
   int getIsbn() const;
  
   // returns the 3rd letter in the book title or '0' if title shorter than that
   char getTitle3rdChar() const;
 
   // returns true if two books have the same ISBN, false otherwise
   bool compare(const Book &otherBook) const;
};