簡單版本...代理模式和指標操作符過載的結合體...

#ifndef __AUTO_PTR_H_
#define __AUTO_PTR_H_
#include <iostream>

namespace std_plus {

	template<class T> class auto_ptr
	{

	public:
		auto_ptr(T *ptr)
		{
			_ptr = ptr;
			refer_count = new int(0);
			std::cout << "refer_count:" << *refer_count <<std::endl;
		}
		auto_ptr(const auto_ptr<T> &ap_t)
		{
			this->_ptr = ap_t._ptr;
			this->refer_count = ap_t.refer_count;
			(*refer_count)+=1;
			std::cout << "refer_count:" << *refer_count <<std::endl;
		}
		~auto_ptr()
		{
			if (*refer_count == 0)
			{
				std::cout << "auto_ptr auto to delete..." << std::endl;
				delete _ptr;
                                delete refer_count;
				
			}
			_ptr = NULL;
		}
		T* operator->()
		{
			return _ptr;
		}
		T& operator*()
		{
			return *_ptr;
		}
	private:
		T *_ptr;
		int *refer_count;
	};

}
#endif