Answer to Question #226764 in C++ for Fairy

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>
using namespace std;
class Publication{
    protected:
    string title = "";
    float price;
    public:
    Publication(){
        getdata();
    }
    void getdata(){
        cout<<"\nInput title: ";
        char c = cin.get();
        getline(cin, title);
        if(c != '\n') title = c + title;
        cout<<"Input price: ";
        cin>>price;
    }
};
class Book: public Publication{
    int page_count;
    public:
    Book():Publication(){
        cout<<"Input number of pages: ";
        cin>>page_count;
    }
    void putdata(){
        cout<<"\nType: Book";
        cout<<"\nTitle: "<<title;
        cout<<"\nPrice: "<<price;
        cout<<"\nNumber of pages: "<<page_count<<endl;
    }
};
class Tape:public Publication{
    float play_time;
    public:
    Tape():Publication(){
        cout<<"Input play time in mimutes: ";
        cin>>play_time;
    }
    void putdata(){
        cout<<"\nType: Tape";
        cout<<"\nTitle: "<<title;
        cout<<"\nPrice: "<<price;
        cout<<"\nPlay time: "<<play_time<<endl;
    }
};
int main(){
    cout<<"Input book data:\n";
    Book book;
    cout<<"Input tape data:\n";
    Tape tape;
    book.putdata();
    tape.putdata();
    return 0;
}