继承和派生

classPoint//基类Point类的声明{public://公有函数成员voidInitP(floatxx=0,floatyy=0){X=xx;Y=yy;}voidMove(floatxOff,floatyOff){X+=xOff;Y+=yOff;}floatGetX(){returnX;}floatGetY(){returnY;}private:floatX,Y;};