类的静态成员

//类的静态成员class Point{public:Point(int xx=0,int yy=0)  //隐式内联构造函数{X=xx;Y=yy;countP++;}Point(Point &p); //拷贝构造函数~Point()  //隐式内联析构函数{counP--;}int GetX(){return X;}int GetY(){return Y;}static void GetC() //静态函数成员，可以直接通过类名调用{cout<<"Object id="<<countP<<endl;}private:int X,Y;static int countP;};Point::Point(Point &p){X=p.X;Y=p.Y;countP++;}int Point::countP=0;   //静态数据成员定义和初始化，使用类名限定int main(){Point::GetC();// 直接通过类名调用函数输出对象个数的初始值

<span style="white-space:pre"></span>Point A(4,5);cout<<"Point A,"<<A.GetX()<<","<<A.GetY();A.GetC();Point B(A);cout<<"Point B,"<<B.GetX()<<","<<B.GetY();B.GetC();}