template < typename _xT > class auto_ptr
{
	_xT *ptr;

	public:
		auto_ptr( _xT *ptr, size_t size )
		{
			ptr = new _xT[ size ];
			this->ptr = ptr;
		}

		~auto_ptr()
		{ 
			delete []this->ptr;
		}
};

void f()
{
		 int array[100];

		auto_ptr<int> memory( array, 100 );
}

// unique_ptr::operator[]
#include <iostream>
#include <memory>

int main () {
  std::unique_ptr<int[]> foo (new int[5]);

  for (int i=0; i<5; ++i) foo[i] = i;

  for (int i=0; i<5; ++i) std::cout << foo[i] << ' ';
  std::cout << '\n';

  return 0;
}