#ifndef  _auto_ptr_meyer_
#define  _auto_ptr_meyer_

template<class T> class auto_ptr {
public:
  explicit auto_ptr(T *p = 0): pointee(p) {}

  template<class U>
  auto_ptr(auto_ptr<U>& rhs): pointee(rhs.release()) {}
  

  ~auto_ptr() { delete pointee; }

  
  template<class U> 
  auto_ptr<T>& operator=(auto_ptr<U>& rhs)
  {
    if (this != &rhs) reset(rhs.release());
    return *this;
  }


  T& operator*() const { return *pointee; }

  T* operator->() const { return pointee; }

  T* get() const { return pointee; }

  T* release()
  {
    T *oldPointee = pointee;
    pointee = 0;
    return oldPointee;
  }

  void reset(T *p = 0)
  {
    if (pointee != p) {
      delete pointee;
      pointee = p;
    }
  }
private:
  T *pointee;

};

#endif