out << "\t<tank name=\"" << name << "\">" << std::endl;
out << "\t\t<capacity>" << capacity << "</capacity>" << std::endl;
out << "\t\t<litros>" << litros << "</litros>" << std::endl;
+ out << "\t\t<salida id=\"inferior\"><active>" << (output->get_output()?"true":"false") << "</active></salida>" << std::endl;
+ out << "\t\t<salida id=\"superior\"><active>" << (input->get_output()?"true":"false") << "</active></salida>" << std::endl;
out << "\t</tank>" << std::endl;
}