delete顺序

 

delete顺序是深度调用，即先new后delete；

#include <string>


class a
{
public:
	a(){aData=NULL;}
	~a();

	void initA(std::string &);
private:
	a* aData;

	std::string _aStr;
	static int count;

};

#include "a.h"
#include <iostream>
int a::count=0;

void a::initA(std::string & str )
{
	count++;
	_aStr=str;

	
	if (count<3)
	{
		aData=new a;
		str+=count+48;
		aData->initA(str);
	}
	

}

a::~a()
{
	delete aData;
	std::cout<<_aStr<<std::endl;
	

}

#include "a.h"


int main()
{
	a atest;
	atest.initA(std::string("你好"));

	return 0;

}