C++基本语法---new_delete使用

#include <iostream>
using namespace std;

class Box{
	public:
		Box(){
			cout << "Box构造函数创建" << endl;
		}
		~Box(){
			cout << "Box析构函数调用"  << endl;
		}
};

int main()
{	
	
	double *ptr = NULL;
	ptr = new double;
	*ptr = 29494.99;
	
	cout << "*ptr的值:" << *ptr << endl;
	
	delete ptr;
	
	cout << "-----对象数组创建销毁示例-------" << endl;
	
	Box *BoxArray = new Box[4];
	delete []BoxArray;
	
	
    return 0;
}