abstract.cpp

#include <cmath>
#include <cstdio>
#include <vector>
#include <iostream>
#include <algorithm>
#include <string>
using namespace std;
class Book{
    protected:
        string title;
        string author;
    public:
        Book(string t,string a){
            title=t;
            author=a;
        }
        virtual void display()=0;

};

class MyBook : public Book
{
    public:
        int price;
    MyBook(string tle,string auth, int prc) : Book(tle,auth)
    {
        title = tle;
        author = auth;
        this->price = prc;
    }
    void display()
    {
        cout <<"Title: "<<title<<endl;
        cout <<"Author: "<<author<<endl;
        cout <<"Price: "<<price<<endl;
    }
};

int main() {
    string title,author;
    int price;
    getline(cin,title);
    getline(cin,author);
    cin>>price;
    MyBook novel(title,author,price);
    novel.display();
    return 0;
}