Practic 3.1

#include <iostream>

using namespace std;

class publication
{
   private:
       char name[100];
       float cost;
   public:
void getdata()
{
    cout << "Name book" << endl;
    cin >> name;
    cout << "Cost book" << endl;
    cin >> cost;
}
void putdata()
{
    cout << "Book:" << endl;
    cout << "Name - " << name << endl;
    cout << "Cost - " << cost << " $" << endl;
}
};
class book : public publication
{
   public:
       int tops;
       void gettops()
       {
           cout << "Write tops in the book" << endl;
           cin >> tops;
       }
       void puttops()
       {
           cout << tops << " - Tops" << endl;
       }
};
       class type : public publication
       {
       public:
           float time;
           void gettime()
           {
               cout << "Write time book" << endl;
               cin >> time;
           }
           void puttime()
           {
               cout << "Time - " << time << " hours" << endl;
           }
};
int main()
{
    publication obj;
    book obj1;
    type obj2;
    obj.getdata();
    obj.putdata();
    obj1.gettops();
    obj1.puttops();
    obj2.gettime();
    obj2.puttime();
    system("pause");
    return 0;
}