INHERITANCE

#include<iostream>
#include<conio.h>
#include<string.h>
using namespace std;

class buku
{      private:
              char judul[35];
              char pengarang[25];
              long harga;
       public:
             buku (char *judul, char *pengarang, long harga);
             void info_buku(); };

class disket
{      private:
             char ukuran [25];
              long harga;
      public:
             disket(char *ukuran, long harga);
             void info_disket();
};

class paketbukudisket : public buku, public disket
{      private:
             long harga;
      public:
             paketbukudisket(char *judul, char *pengarang, long harga_buku, char *ukuran, long harga_disk);
             void info_paket();
};

int main()
{    paketbukudisket cpp("C++", "Alakadabra", 25000, "3 1/2 inci", 12000);
      cpp.info_paket(); }

buku::buku(char*judul, char *pengarang, long harga)
{                       strcpy(buku::judul, judul);
                        strcpy(buku::pengarang, pengarang);
                        buku::harga=harga; }

void buku::info_buku()
{     cout<<" Judul buku    : "<<judul<<endl;
       cout<<" Pengarang     : "<<pengarang<<endl;
       cout<<" Harga buku    : "<<harga<<endl; }

disket::disket(char *ukuran, long harga)
{                    strcpy(disket::ukuran, ukuran);
                     disket::harga = harga; }

void disket::info_disket()
{     cout<<" Ukuran disket : "<<ukuran<<endl;
       cout<<" Harga disket  : "<<harga<<endl; }

paketbukudisket::paketbukudisket(char *judul, char *pengarang, long harga_buku, char *ukuran, long harga_disket):
                                      buku(judul, pengarang, harga_buku),disket(ukuran, harga_disket)
{            harga = harga_buku + harga_disket; }

void paketbukudisket::info_paket()
{     info_buku();
      info_disket();

    cout<<" Harga Total   : "<<harga<<endl;
     getch(); }