class Punkt {
	public:
		Punkt(); -> Standard CTOR m_y und m_x = 0
		Punkt(int x, int y){
			this.m_x = x;
			this.m_y = y;
		}; -> CTOR x -> m_x, y -> m_y

		setX(int x); setter x
		setY(int y);
	private:
		int m_x;
		int m_y;
}