11.0 C++远征：对象指针

4-1对象指针

​ 定义一个类：

class Coordinate{
	public:
  		int m_iX;
  		int m_iY;
};

​ 实例化一个对象：

Coordinate *p = new Coordinate;

`在堆区分配内存：`![](http://images2015.cnblogs.com/blog/939857/201611/939857-20161118110851107-82638650.png)

// 访问对象指针
int main(){
	Coordinate *p = new Coordinate;
	p->m_iX = 10;	// (*p).m_iX = 10;
	p->m_iY = 20;	// (*p).m_iY = 20;
 	delete p;
	p = NULL;
  
	return 0;
}