Time class: add two objects

The class Time has data members hours, minutes and seconds. The function add() receives one Time object as an argument, is called by another object, and returns a new Time object as the result. Seconds and minutes above 59 are carried over.

#include <iostream>
using namespace std;

class Time {
    int hours, minutes, seconds;
public:
    void getTime() {
        cout << "Enter hours, minutes, seconds: ";
        cin >> hours >> minutes >> seconds;
    }
    Time add(Time t2) {              // object as argument, object returned
        Time t3;
        t3.seconds = seconds + t2.seconds;
        t3.minutes = minutes + t2.minutes + t3.seconds / 60;
        t3.seconds = t3.seconds % 60;
        t3.hours   = hours + t2.hours + t3.minutes / 60;
        t3.minutes = t3.minutes % 60;
        return t3;
    }
    void display() {
        cout << hours << " hr " << minutes << " min "
             << seconds << " sec" << endl;
    }
};

int main() {
    Time t1, t2, t3;
    t1.getTime();
    t2.getTime();
    t3 = t1.add(t2);                 // t1 calls add, t2 is passed
    cout << "Sum = ";
    t3.display();
    return 0;
}

Sample run

Enter hours, minutes, seconds: 2 45 50
Enter hours, minutes, seconds: 1 20 30
Sum = 4 hr 6 min 20 sec

Check: seconds 50 + 30 = 80, so 20 s with carry 1; minutes 45 + 20 + 1 = 66, so 6 min with carry 1; hours 2 + 1 + 1 = 4.