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Use c++ to code: Problem 1 Implement a class Clock whose get hours and get_minutes member functions return the current time at your location.

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Answer #1

thanks for the question, here are the 5 files you will be needing. Let me know for any changes or modifications. We have override the get_hours and get_minutes member functions

///////////////////////////////////////////////////////////////////////

/////////////////////////////// Clock.h///////////////////////////////

///////////////////////////////////////////////////////////////////////

#ifndef CLOCK_H

#define CLOCK_H

#include<string>

using std::string;

class Clock

{

                public:

                                virtual int get_hours();

                                virtual int get_minutes();

                                virtual string get_time();

};

#endif

////////////////////////////////////////////////////////////////////////

/////////////////////////////// Clock.cpp///////////////////////////////

////////////////////////////////////////////////////////////////////////

#include "Clock.h"

#include<string>

#include<ctime>

#include<sstream>

using namespace std;

int Clock::get_hours() {

                time_t current_time = time(0);

                tm* local_time=localtime(&current_time);

                return local_time->tm_hour;

}

int Clock::get_minutes() {

                time_t current_time = time(0);

                tm* local_time=localtime(&current_time);

                return local_time->tm_min;

}

string Clock::get_time() {

                int hours = get_hours();

                int minutes = get_minutes();

                if(hours>12){

                                stringstream ss;

                                ss<<(hours-12)<<":"<<minutes;

                                string time;

                                ss>>time;

                                return time+" PM";

                }else{

                                stringstream ss;

                                ss<<(hours)<<":"<<minutes;

                                string time;

                                ss>>time;

                                return time+" AM";

                }

}

///////////////////////////////////////////////////////////////////////////

/////////////////////////////// WorldClock.h///////////////////////////////

///////////////////////////////////////////////////////////////////////////

#ifndef WORLDCLOCK_H

#define WORLDCLOCK_H

#include "Clock.h"

class WorldClock:public Clock

{

                public:

                                WorldClock(int);

                                int get_hours();

                                int get_minutes();

                private:

                                int ahead;

};

#endif

/////////////////////////////////////////////////////////////////////////////

/////////////////////////////// WorldClock.cpp///////////////////////////////

/////////////////////////////////////////////////////////////////////////////

#include "WorldClock.h"

#include<string>

#include<ctime>

#include<sstream>

using namespace std;

WorldClock::WorldClock(int ahead):Clock(), ahead{ahead}{

}

                int WorldClock::get_hours(){

                                time_t current_time = time(0);

                                tm* local_time=localtime(&current_time);

                                int hours= local_time->tm_hour;

                                int minutes = local_time->tm_min;

                                int total_minutes = hours*60+minutes + ahead*30;

                                total_minutes%=24*60;

                                return total_minutes/60;

                }

                int WorldClock::get_minutes(){

                                time_t current_time = time(0);

                                tm* local_time=localtime(&current_time);

                                int hours= local_time->tm_hour;

                                int minutes = local_time->tm_min;

                                int total_minutes = hours*60+minutes + ahead*30;

                                total_minutes%=24*60;

                                return total_minutes%60;

                }

///////////////////////////////////////////////////////////////////////

/////////////////////////////// main.cpp///////////////////////////////

///////////////////////////////////////////////////////////////////////

#include <iostream>

#include "Clock.h"

#include "WorldClock.h"

using namespace std;

int main(){

                Clock clock;

                cout<<"New York Time: "<<clock.get_time()<<endl;

                WorldClock worldClock(3);

                cout<<"London Time: "<<worldClock.get_time()<<endl;

}

///////////////////////////////////////////////////////////////////////

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