/*
 *      A simple C++ program
 */

#include        <iostream.h>
#include        <string.h>

const int NAME_LENGTH = 64;
const int NUMBER_CARDS = 32;

// List of classes in this program

class Author;
class Book;
class CatalogCard;

// Declaration of the classes

class Author {
public:
    Author(char *, char *, char *, char *); 
    void addCatalogCard(CatalogCard *);
    void showAuthor(void);

private:
    char            real_name[NAME_LENGTH];
    char            pen_name[NAME_LENGTH];
    char            dob[NAME_LENGTH];
    char            dod[NAME_LENGTH];
    CatalogCard    *cards[NUMBER_CARDS];
    int             nbooks;
}

class Book {
public:
    Book(char *, Author *, int);
    void showBook(void);

private:
    char            title[NAME_LENGTH];
    Author         *by_author;
    int             pages;
};

class CatalogCard : public Book {
public:
    CatalogCard(char *, Author *, int, char *, int);

private:
    void showCard(void);
    char            catalog[NAME_LENGTH];

    // true(1) if checked out, otherwise false(0)
    int             checked_out;
};

// Implementation of member functions

Author::Author(char *real, char *pen, char *dob, char *dod)
{
    strcpy(real_name, real);
    strcpy(pen_name, pen);
    strcpy(this->dob, dob);
    strcpy(this->dod, dod);
    nbooks = 0;
}

void
Author::addCatalogCard(CatalogCard *card)
{
    cards[nbooks++] = card;
}

void
Author::showAuthor(void)
{
    cout << "   Real Name:      " << real_name << endl;
    if (*pen_name != '\0') {
        cout << "       Pen  Name:      " << pen_name << endl;
    }

    cout << "   Lived " << dob << " to " << dod << endl;

    if (nbook == 1) {           // in C++ the single "=" sign
                                // does NOT test equality
        cout << "       This is the only book by this author in the library."
                << endl;
    } else {
        cout << "       There are " << nbooks
                << " books by this author in the library." << endl;

        /*
         * Need to print the titles of other books written by this
         * author.  How?  Add an accessor function showTitle() in the
         * Book class to print the title of a book, then we can go
         * through the cards here and call showTitle() on the card
         * objects (which are also Book objects).
         */
    }
}

Book::Book(char *title, Author *by_author, int pages)
{
    strcpy(this->title, title);
    this->by_author = by_author;
    this->pages = pages;
}

void
Book::showBook(void)
{
    cout << "--------------------------------------------------" << endl;
    cout << "    Title: " << title << endl;
    cout << "   Author: " << endl;
    by_author->showAuthor();
    cout << "    Pages: " << pages << endl;
}

CatalogCard::CatalogCard(char *title,
        Author *by_author,
        int pages,
        char * catalog,
        int checked_out)
        : Book(title, by_author, pages)
{
    strcpy(this->catalog, catalog);
    this->checked_out = checked_out;
}

void
CatalogCard::showCard(void)
{
    showBook();
    cout << "  Catalog: " << catalog << endl;
    if (checked_out) {
        cout << "   Status:     Checked out" << endl;
    } else {
        cout << "   Status:     Available" << endl;
    }
}

// main function of the program to demonstrate the classes

void
main(void)
{
    Author         *authors[25];
    CatalogCard    *cards[100];
    int             nauth = 0;
    int             ncard = 0;
    int             i;

    authors[nauth++] = new Author("Clemens, Samuel L.",
            "Mark Twain", "1835", "1910");
    cards[ncard++] = new CatalogCard("A Connecticut Yankee",
            authors[0], 352, "Fiction Row 7", true);
    cards[ncard++] = new CatalogCard("What Is Man?",
            authors[0], 154, "Fiction Row 7", false);
    cards[ncard++] = new CatalogCard("Tom Sawyer Detective",
            authors[0], 371, "Fiction Row 7", false);
    cards[ncard++] = new CatalogCard("Adventures of Huckleberry Finn",
            authors[0], 371, "Fiction Row 7", true);
    authors[0]->addCatalogCard(cards[0]);
    authors[0]->addCatalogCard(cards[1]);
    authors[0]->addCatalogCard(cards[2]);
    authors[0]->addCatalogCard(cards[3]);

    authors[nauth++] = new Author("Burroughs, Edgar R.",
            "", "1875", "1950");
    cards[ncard++] = new CatalogCard("Tarzan, Jewels of Opar",
            authors[1], 317, "Fiction Row 2", false);
    cards[ncard++] = new CatalogCard("Return of Tarzan",
            authors[1], 423, "Fiction Row 2", false);
    cards[ncard++] = new CatalogCard("Son of Tarzan",
            authors[1], 296, "Fiction Row 2", false);
    cards[ncard++] = new CatalogCard("Tarzan of the Apes",
            authors[1], 317, "Fiction Row 2", true);
    authors[1]->addCatalogCard(cards[4]);
    authors[1]->addCatalogCard(cards[5]);
    authors[1]->addCatalogCard(cards[6]);
    authors[1]->addCatalogCard(cards[7]);

    authors[nauth++] = new Author("Schartau, Winn",
            "", "1953", "present");
    cards[ncard++] = new CatalogCard("Terminal Compromise",
            authors[2], 429, "Fiction Row 42", true);
    authors[2]->addCatalogCard(cards[8]);

    for (i = 0; i < ncard; i++) {
        cards[i]->showCard();
    }
}