#include <iostream>
 #include <iomanip>
 #include <string>
 using namespace std;
 
 #include "ccc_time.h"
 
 class Clock {
 public:
    Clock(bool use_military); 
    string get_location() const;
    int get_hours() const;
    int get_minutes() const;
    bool is_military() const;
 private:
    bool military;
 };
 
 Clock::Clock(bool use_military)
 { military = use_military; }
 
 string Clock::get_location() const
 { return "Local"; }
 
 int Clock::get_hours() const
 { Time now;
   int hours = now.get_hours();
   if (military) return hours;
   if (hours == 0) return 12;
   else if (hours > 12) return hours - 12;
   else return hours;
 }
 
 int Clock::get_minutes() const
 { Time now;
   return now.get_minutes();
 }
 
 bool Clock::is_military() const
 { return military;  }
 
 class TravelClock : public Clock {
 public:
 /**
   Constructs a travel clock that can tell the time
    at a specified location
   @param mil true if the clock uses military format
   @param loc the location
   @param diff the time difference from the local time
 */
    TravelClock(bool mil, string loc, int diff);
    string get_location() const;
    int get_hours() const;
 private:
    string location;
   int time_difference;
 };
 
 TravelClock::TravelClock(bool mil, string loc, int diff)
    : Clock(mil)
 { location = loc;
   time_difference = diff;
   while (time_difference < 0) 
       time_difference = time_difference + 24;
 }
 
 string TravelClock::get_location() const
 { return location; }
 
 int TravelClock::get_hours() const
 { int h = Clock::get_hours();
   if (is_military())
       return (h + time_difference) % 24;
   else
   {  h = (h + time_difference) % 12;
      if (h == 0) return 12;
      else return h;
   }
 }
 
 int main()
 { Clock clock1(true);
   TravelClock clock2(true, "Rome", -1);
   TravelClock clock3(false, "Tokyo", 5);
 
   cout << clock1.get_location() << " time: " 
       << clock1.get_hours() << ":"
       << setw(2) << setfill('0') 
       << clock1.get_minutes() 
       << setfill(' ') << "\n";
   cout << clock2.get_location() << " time: " 
       << clock2.get_hours() << ":"
       << setw(2) << setfill('0') 
       << clock2.get_minutes() 
       << setfill(' ') << "\n";
   cout << clock3.get_location() << " time: " 
       << clock3.get_hours() << ":"
       << setw(2) << setfill('0') 
       << clock3.get_minutes() 
       << setfill(' ') << "\n";
   return 0;
 }