Question

Imagine a publishing company that markets both book and audiocassette versions of its

works. Create a class publication that stores the title (a string) and price (type float)

of a publication. From this class derive two classes: book, which adds a page count (type

int), and tape, which adds a playing time in minutes (type float). Each of these three

classes should have a getdata() function to get its data from the user at the keyboard,

and a putdata() function to display its data.

Write a main() program to test the book and tape classes by creating instances of them,

asking the user to fill in data with getdata(), and then displaying the data with putdata().

Answer 1

#include <iostream>
#include <string>

class publication
{
protected:
    std::string title;
    double price;
};
class book : public publication
{
    int page_count;
public:
    void get_data()
    {
        std::cout << "Enter the book title: "<<std::endl;
        std::getline(std::cin, title);
        std::cout<<"Enter the price: ";
        std::cin>>price;
        std::cout<<"Enter page count: ";
        std::cin>>page_count;
    }
    void put_data()
    {
        std::cout<<"Book: " << title <<" has "<<page_count<<" pages and costs "<< price<<std::endl;
    }
};
class tape: public publication
{
    int playing_time;
public:
    void get_data()
    {
        std::cout << "Enter the tape title: "<<std::endl;
        std::cin.ignore(1);
        std::getline(std::cin, title);
        std::cout<<"Enter the price: ";
        std::cin>>price;
        std::cout<<"Enter playing time: ";
        std::cin>>playing_time;
    }
    
    void put_data()
    {
        std::cout<<"Tape: " << title <<" has "<<playing_time<<" playing time and costs "<< price<<std::endl;
    }
};


int main()
{
    book b;
    b.get_data();
    b.put_data();
    tape t;
    t.get_data();
    t.put_data();
    return 0;
}