/**
 * A class to represent a number of hours, minutes and seconds
 * 
 * @author CSC 142
 * 
 */
public class Clock {
	// hours, minutes and seconds
	private int h, m, s;

	// no need to write this constructor.
	// If no constructor is written, Java automatically creates
	// a default constructor that initializes the instance fields
	// to their default values.
	public Clock() {
		h = 0;
		m = 0;
		s = 0;
	}

	/**
	 * Adds one second to the current time of the clock
	 */
	public Clock tick() {
		s++; // same as s+=1 or s = s + 1
		if (s == 60) {
			m++;
			s = 0;
			if (m == 60) {
				m = 0;
				h++;
			}
		}
		return this;
	}

	/** Returns the time of the clock as a string */
	public String toString() {
		return "h=" + h + ", m=" + m + ", s=" + s;
	}
}