public class Clock {
	private int h, m, s;
	
	/**
	 * adds 1 s to the current time
	 */
	public Clock tick() {
		s += 1;
		if (s == 60) {
			m += 1;
			s = 0;
			if (m == 60) {
				m = 0;
				h += 1;
			}
		}
		return this;
	}
	
	/**
	 * Prints the time of the clock
	 */
	public void printTime() {
		System.out.println(h + "h " + m + "mn " + s + "s");
	}
	
}