while (!in.eof()) {
        in >> temp_id;
        in.get();
        in.getline(temp_name_import, 50, ':');
        in.getline(temp_description_import, 200, ':');
        in >> temp_is_taken;
        books.push_back(temp_id, temp_name_import, temp_description_import, temp_is_taken);
        in.ignore();
    }