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    <a href="../index-2.html">cppreference.com</a> &gt; <a href=
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    realloc
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  #include &lt;cstdlib&gt;
  void *realloc( void *ptr, size_t size );
</pre>

  <p>The realloc() function changes the size of the object pointed to
  by ptr to the given size. size can be any size, larger or smaller
  than the original. The return value is a pointer to the new space, or
  <strong>NULL</strong> if there is an error.</p>

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