class QuartzClock {
   public:
      QuartzClock(Time* t);

      float GetAngle() {
        angle = 0;
        int hours = this->t = t.GetHours();
        if (hours>12) hours = hours - 12;
        int minutes = this->t.GetMinutes();
        angle = abs(hours*30-minutes*6); if (angle>180) angle=abs(180-angle);
        return angle;
        }

    private:
        float angle;
        Time t;
};