#define PROTECTED_SPACE '@'
#define PROTECTED_NEWLINE '$'
#define BUFFER_MAX 1000

struct book {
  char *title, *author, *publisher;
  int publishing_year;
  int university_text_book;
};

typedef struct book book;

book *make_book(const char *title, const char *author, 
                const char *publisher, 
		int year, int text_book);

void prnt_book(book *b);

void print_book(book *b, FILE *ofp);

book *read_book(FILE *ifp);