class.time.cpp

#include <iostream>

using namespace std;

class Time {
private:
  int hours,
	minutes,
	seconds;
	
public:
	Time() {
		hours = 0;
		minutes = 0;
		seconds = 0;
	}

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

	int gethours() {
		return hours;
	}

	int getminutes() {
		return minutes;
	}

	int getseconds() {
		return seconds;
	}

	void show() {
		cout << hours << ":" << minutes << ":" << seconds << endl;
	}

	void add(Time t1, Time t2) {
		seconds = t1.getseconds() + t2.getseconds();
		if (seconds > 59) {
			seconds = seconds - 60;
			minutes++;
		}

		minutes = minutes + t1.getminutes() + t2.getminutes();
		if (minutes > 59) {
			minutes = minutes - 60;
			hours++;
		}

		hours = hours + t1.gethours() + t2.gethours();
		if (hours > 23) {
			hours = 0;
		}
	}
};

int main() {
	Time t1(3, 20, 10);
	Time t2(4, 30, 20);
	Time t3;

	t3.add(t1, t2);
	t3.show();

	return 0;
}