Question

Q#2). Create a class called Time that has data members to represent hours, minutes and seconds.

Provide the following member functions:-

1. To assign initial values to the Time object.

2. To display a Time object in the form of hh:mm:ss {0 to 24 hours}

3. To add 2 Time objects (the return value should be a Time object)

4. To subtract 2 Time objects (the return value should be a Time object)

5. To compare 2 time objects and to determine if they are equal or if the first is greater or smaller than

the second one.

Answer 1

#include<iostream>
using namespace std;


// Create a class called Time that has data members to represent hours, minutes and seconds
class Time {
    private:
        int hours;
        int minutes;
        int seconds;
    public:
    //assign initial values to the Time object
        Time(){ 
        hours = 0;
        minutes = 0;
        seconds = 0;
        }
        Time(int hrs, int min, int sec) {
        hours = hrs;
        minutes = min;
        seconds = sec;
        }
        //display a Time object in the form of hh:mm:ss {0 to 24 hours}
        void display(){
            cout << hours << ":" << minutes << ":" << seconds << endl;
        } 
        //To add 2 Time objects (the return value should be a Time object)
        int getHours(){
            return hours;
        }
        int getMinutes(){
            return minutes;
        }
        int getSeconds(){
            return seconds;
        }
        Time add(Time t1, Time t2) {
            int hours2 = t1.getHours() + t2.getHours();
            if (hours2 > 23) {
            hours2 -= 24;
            }
            int minutes2 = t1.getMinutes() + t2.getMinutes();
            if (minutes2 > 59) {
            minutes2 -= 60;
            hours2 += 1;
            }
            int seconds2 = t1.getSeconds() + t2.getSeconds();
            if (seconds2 > 59) {
            seconds2 -= 60;
            minutes2 += 1;
            }
            
            Time time3(hours2, minutes2, seconds2);
            return time3;
        };
    //To subtract 2 Time objects (the return value should be a Time object)
        
    Time sub( Time t1,  Time t2)  {
        int nDiff(t1.getHours()*3600 + t1.getHours()*60 - (t2.getHours()*3600 + t2.getMinutes()*60));
    
        int nHours(nDiff/3600);
        int nMins((nDiff%3600)/60);
        int nSec((nDiff%3600)%60);
        return Time(nHours, nMins,nSec);
    }   
    //To compare 2 time objects and to determine if they are equal or if the first is greater or smaller than
    //the second one.
    bool operator == ( Temp& t)  {
         return this->hours == t.hours;
    }  
};


int main() {
    Time t1(20, 50, 30);
    Time t2(10, 30, 43);
    
    t1.display();
    t2.display();
    
    Time t3=t1.add(t1,t2);
    t3.display();
    // cout<<"\nAfter ADD: "<<t1.add(t1, t2);
    return 0;
}