this 指针

/* this 指针 */#include <iostream>using namespace std;class Point{private:double x;double y;static int count;public: Point(double a=0, double b=0) : x(a), y(b) { count++; }void Show()const;void setPoint(double x, double y);static int getCount();};int Point::count=0;void Point::Show()const{cout<<"this: "<<this<<endl;cout<<"x="<<x<<"y="<<y<<endl;}int Point::getCount(){//return this->count;//错，在静态成员函数内部没有this指针return count;}void Point::setPoint(double x, double y){this->x=x;this->y=y;}int main(){Point p1(1,2);cout<<"p1: "<<&p1<<endl;p1.Show();cout<<endl;Point p2;p2.setPoint(5,6);cout<<"p2: "<<&p2<<endl;p2.Show();return 0;}