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    <a href="../index-2.html">cppreference.com</a> &gt; <a href=
    "index.html">Miscellaneous C++</a>
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  <div class="name-format">
    auto_ptr
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    Syntax:
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  <pre class="syntax-box">
  #include &lt;memory&gt;
  auto_ptr&lt;class <a href="../containers.html">TYPE</a>&gt; name
</pre>

  <p>The auto_ptr class allows the programmer to create pointers that
  point to other objects. When auto_ptr pointers are destroyed, the
  objects to which they point are also destroyed.</p>

  <p>The auto_ptr class supports normal pointer operations like =, *,
  and -&gt;, as well as two functions <a href=
  "../containers.html">TYPE</a>* get() and <a href=
  "../containers.html">TYPE</a>* release(). The get() function returns
  a pointer to the object that the auto_ptr points to. The release()
  function acts similarily to the get() function, but also relieves the
  auto_ptr of its memory destruction duties. When an auto_ptr that has
  been released goes out of scope, it will not call the destructor of
  the object that it points to.</p>

  <p><strong>Warning</strong>: It is generally a <strong>bad
  idea</strong> to put auto_ptr objects inside C++ STL containers. C++
  containers can do funny things with the data inside them, including
  frequent reallocation (when being copied, for instance). Since
  calling the destructor of an auto_ptr object will free up the memory
  associated with that object, any C++ container reallocation will
  cause any auto_ptr objects to become invalid.</p>

  <div class="related-examples-format">
    Example code:
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<pre class="prettyprint">
 #include &lt;memory&gt;
 using namespace std;

 class MyClass {
 public:
   MyClass() {} // nothing
   ~MyClass() {} // nothing
   void myFunc() {} // nothing
 };

 int main() {
   auto_ptr&lt;MyClass&gt; ptr1(new MyClass), ptr2;

   ptr2 = ptr1;
   ptr2-&gt;myFunc();

   MyClass* ptr = ptr2.get();

   ptr-&gt;myFunc();

   return 0;
 }
</pre>
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