#include <string>
#include <iostream>

using namespace std;

// Lägg till nödvändiga klasser här

int main()
{
    Bookshelf bookshelf{5.0};
    bookshelf.put_book( Book{"The Hobbit", 0.4}      );
    bookshelf.put_book( Book{"Learning Python", 3.6} );
    bookshelf.put_book( Book{"C++ Primer", 2.0}      );
    bookshelf.put_book( Book{"Learning C++", 2.2}    );
    bookshelf.put_book( Book{"C++ Templates", 2.0}   );
    bookshelf.put_book( Book{"The Pickaxe", 0.9}     );
 
    cout << bookshelf.to_string() << endl;
    return 0;
}