Program 5 BCA Madras University BCA Object Oriented Programming using C++ Practical Madras University Program 5 Design a class representing time in hh:mm:ss. Write functions to a. Set and show the time b. Find the difference between two time objects c. Adding a given duration to a time d. Conversion of the time object to seconds

 

BCA

Object Oriented Programming using C++ Practical

Madras University 

Program 5

Design a class representing time in hh:mm:ss. Write functions to a. Set and show the time b. Find the difference between two time objects c. Adding a given duration to a time d. Conversion of the time object to seconds

 

SOURCE CODE:

#include <iostream>

#include <iomanip>

#include <cmath>

using namespace std;

class Time {

private:

    int hours;

    int minutes;

    int seconds;

public:

    // Constructor to initialize time

    Time(int h = 0, int m = 0, int s = 0) : hours(h), minutes(m), seconds(s) {}

    // Function to set the time

    void setTime(int h, int m, int s) {

        hours = h;

        minutes = m;

        seconds = s;

    }

    // Function to show the time

    void showTime() const {

        cout << setw(2) << setfill('0') << hours << ":"

                  << setw(2) << setfill('0') << minutes << ":"

                  << setw(2) << setfill('0') << seconds << endl;

    }

    // Function to find the difference between two time objects

    Time difference(const Time &t) const {

        int totalSec1 = hours * 3600 + minutes * 60 + seconds;

        int totalSec2 = t.hours * 3600 + t.minutes * 60 + t.seconds;

        int diff = abs(totalSec1 - totalSec2);

        int h = diff / 3600;

        diff %= 3600;

        int m = diff / 60;

        int s = diff % 60;

        return Time(h, m, s);

    }

    // Function to add a given duration to a time

    void addDuration(int h, int m, int s) {

        int totalSec = hours * 3600 + minutes * 60 + seconds + h * 3600 + m * 60 + s;

        hours = (totalSec / 3600) % 24;

        totalSec %= 3600;

        minutes = (totalSec / 60) % 60;

        seconds = totalSec % 60;

    }

    // Function to convert the time object to seconds

    int toSeconds() const {

        return hours * 3600 + minutes * 60 + seconds;

    }

};

int main() {

    Time t1(2, 45, 30);

    Time t2(5, 50, 15);

    int h,m,s;

    cout << "Time 1: ";

    t1.showTime();

    cout << "Time 2: ";

    t2.showTime();

    Time diff = t1.difference(t2);

    cout << "Difference: ";

    diff.showTime();

    

    cout<<"Enter Hours, minutes and seconds to add to time 1:";

    cin>>h>>m>>s;

    t1.addDuration(h,m,s);

    cout << "Time 1 after adding given duration: ";

    t1.showTime();

    int seconds = t1.toSeconds();

    cout << "Time 1 in seconds: " << seconds << endl;

    return 0;

}

OUTPUT:

Time 1: 02:45:30

Time 2: 05:50:15

Difference: 03:04:45

Enter Hours, minutes and seconds to add to time 1:2 60 30

Time 1 after adding given duration: 05:46:00

Time 1 in seconds: 20760

Explanation:

1. Constructor: Initializes the time with given hours, minutes, and seconds.
2. setTime: Sets the time.
3. showTime: Displays the time in hh:mm
   format.
4. difference: Calculates the absolute difference between two time objects and returns the result as a new Time object.
5. addDuration: Adds a given duration to the time object and adjusts for overflow in hours, minutes, and seconds.
6. toSeconds: Converts the time to the total number of seconds since 00:00:00.