vector<Clock> clocks(3);
clocks[0] = Clock(true);
clocks[1] = TravelClock(true, "Rome", 9);
clocks[2] = TravelClock(false, "Tokyo", -7);
for(int i = 0; i < clocks.size(); i++)
{
cout << clocks[i].get_location() << " time: "
<< clocks[i].get_hours() << ":"
<< setw(2) << setfill('0'
<< clocks[i].get_minutes()
<< setfill(' ') << "\n";
}