C++ | 对象指针和对象数组

应用举例：

#include<iostream>
using namespace std;
class Point{
    public :
        Point(){
        }
        Point(double x,double y):x_(x),y_(y){
        }
        Point &operator=(const Point &point){
            if(&point == this)
                return *this;
            
            this->x_ = point.x_;
            this->y_ = point.y_;
            return *this;
        }
        print(){ 
            cout<<"x:"<<this->x_<<" y:"<<this->y_<<endl; 
        } 
    private:
        double x_;
        double y_;
};
int main(){
    Point points[4];
    points[0] = Point(3,4);
    points[1] = Point(5,6);
    points[2] = Point(7,8);
    points[3] = Point(1,8);
    
    //指针对象数组 
    Point* p = points;
    for(int i = 0; i < 4; i++)
        (p+i)->print();
        
    //单个指针对象
    Point *p1 = &points[0];
    p1->print();
}