In C Design a class named TimeClock The class should be deri

In C++:

Design a class named TimeClock. The class should be derived from the Time class listed below:

// Specification file for the Time class

class Time

{

protected:

int Hour;

int Min;

int Sec;

public:

Time(int H, int M, int S) //constructor

{ Hour = H; Min = M; Sec = S; }

// Accessors

int GetHour()

{ return Hour; }

int GetMin()

{ return Min; }

int GetSec()

{ return Sec; }

};

. The class should allow the programmer to pass two times to it: starting time and ending time.

The class should have a member function that returns the amount of time elapsed between the two

times. For example, if the starting time is 900 hours (9:00 am), and the ending time is 1300 hours

(1:00 pm), the elapsed time is 4 hours.

Input Validation: The class should not accept hours greater than 2359 or less than 0.

Solution

I really dont understand the use of given Time class. The requirement could be done withut tht class

#include<iostream>

class Time
{
   protected:
   int Hour;
   int Min;
   int Sec;
   public:
   Time()
   {
       Hour=Min=Sec=0;
   }
   Time(int H, int M, int S) //constructor
   { Hour = H; Min = M; Sec = S; }
   // Accessors
   int GetHour()
   { return Hour; }
   int GetMin()
   { return Min; }
   int GetSec()
   { return Sec; }
};
class TimeClock:public Time
{
   private:
       int startTime, endTime;
   public:
       TimeClock(int start, int end)
       {
           Time(10,10,10);
           if(start < 2359 && end < 2359 && start >=0 && end >=0)
           {
               startTime=start;
               endTime=end;
           }
           else
           {
               startTime=0;
               endTime=0;
           }
       }
       void elapsedTime()
       {
           //return endTime-startTime;
           int m1=startTime % 100;
           int h1=startTime / 100;
          
           int m2=endTime % 100;
           int h2=endTime / 100;
          
           int h = abs(h2-h1);
           int m= abs(m2-m1);
           cout <<h<<\" hours and \"<<m<<\" minnutes\";
       }
};
int main()
{
   TimeClock t(900,1100);
  
   t.elapsedTime();
}