ostream& operator<<(ostream& os, const User& toPrint)
{
    if (typeid(os) == typeid(ofstream)) // file
    {
        //print something
    }
    else //output (ostream)
    {
        os << "Name: " << toPrint.userName << endl
            << "Password: " << toPrint.password << endl
            << toPrint.address;

        toPrint.toPrint(os);
    }


    return os;
}