//card.h
#include<string> //string, getline
#include<iostream> //ostream, istream, cin, cout, endl
using namespace std;
#ifndef CARD_H
#define CARD_H
class card{
  public:
    virtual ~card();   //virtual destructor makes sure that the 
                              //base part and derived part are destroyed.
    void setTitle(string t);
    string getTitle();
    void setKeyword(string k);
    string getKeyword();
    
    //for output, can't use operator<< because it is NOT a
    //member function, so it cannot be declare VIRTUAL
    //similarly for operator>>
    virtual ostream & display(ostream & out);
      //prints
          //Title: title
          //Keyword: keyword
    virtual istream & read(istream & in);
      //reads 
          //title 
          //keyword

  protected:
    string title;
    string keyword;
  };

class book_card:public card{
  public:
    ostream & display(ostream & out);
      //prints
          //   BOOK
          //Title: title
          //Author: author
          //Keyword: keyword      number of pages: pages
          //newline
    istream & read(istream & in);
      //reads 
          //title 
          //keyword
          //author
          //pages
  protected:
    string author;
    int pages;
  };

class journal_card:public card{
  public:
    ostream & display(ostream & out);
      //prints
          //   JOURNAL
          //Title: title
          //Keyword: keyword
          //publisher: publisher
          //From volume start_volume number start_number
          //newline
    istream & read(istream & in);
      //reads 
          //title 
          //keyword
          //start_volume start_number
          //publisher
  protected:
    int start_volume;
    int start_number;
    string publisher;
  };

#endif