Create a class called Time and then write a driver program to test your class by

Question

Create a class called Time and then write a driver program to test your class by creating some objects and performing various operations. Your program must have at least three files: a Time header file (Time.h), a Time implementation file (Time.cpp), and an application file (TimeDriver.cpp). The class has only two int data members hour and minute, with the hour defaults to 0 and the minute defaults to 0 (i.e., the constructor has two default arguments, hour and then minute in that order; note that the default time is 00:00 or 12:00 AM). The hour must be between 0 and 23 and the minute must be between 0 and 59 so validation is needed. Provide the following public member functions:

Constructor (two default parameters); must verify that hour is between 0 and 23 and default to 0 if needed; must verify that minute is between 0 and 59 and default to 0 if needed.

Time(int h = 0, int m = 0);

Setting the hour (must verify that the value is between 0 and 23 and keep current hour if applicable). void setHour(int h);

Setting the minute (must verify that the value is between 0 and 59 and keep current minute if applicable). void setMinute(int m);

Returning the hour. int getHour();

Returning the minute. int getMinute();

Printing the time in AM/PM format (like 1:05 AM, but not 1:5 AM). void print();

Include and use an array of Time objects and a Time pointer in your program

Explanation / Answer

Time.h:

#ifndef TIME_H
#define TIME_H

class Time
{
     private :
          int hour;
          int minute;
     public :
          Time(int h = 0, int m = 0);
      void setHour(int h);
      void setMinute(int m);
      int getHour();
      int getMinute();
          void print() const;
};

#endif

Time.cpp:

#include <iostream>
#include <iomanip>
#include "Time.h"
using namespace std;

Time ::Time(int h, int m)
{
   if(h>=0 && h<=23)
         hour = h;
   else
       hour=0;

   if(m>=0 && m<=59)
       minute = m;
   else
       minute=0;
}
void Time :: setHour(int h)
{
   if(h>=0 && h<=23)
         hour = h;
   else
       hour=0;
}      
void Time :: setMinute(int m)
{
   if(m>=0 && m<=59)
       minute = m;
   else
       minute=0;
}      
int Time :: getHour()
{
   return hour;
}
int Time :: getMinute()
{
   return minute;
}
void Time :: print() const
{
   if(hour==0)
       cout<<"12:";
   else if(hour < 13)
       cout<< hour << ":";
   else
       cout<<hour-12<< ":";
     cout<< setw(2) << setfill('0') << minute << " ";
   if(hour<12)
       cout<<"AM ";
   else
       cout<<"PM ";

}

TimeDriver.cpp:

#include <iostream>
#include "Time.h"
using namespace std;
int main()
{
Time t[10];
Time *tp;
Time t1(12,22);
t[0].print();
t[0].setHour(6);
t[0].setMinute(57);
t[0].print();
t[0].setHour(25);
t[0].print();
tp=&t[0];
tp->print();
t1.print();
cout<<t1.getHour()<<endl;
cout<<t1.getMinute()<<endl;

}

Output:

$ g++ TimeDriver.cpp Time.cpp
$ ./a.out
12:00 AM
6:57 AM
12:57 AM
12:57 AM
12:22 PM
12
22

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