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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html><head>  <meta name="generator" content=  "HTML Tidy for Linux/x86 (vers 1 September 2005), see www.w3.org">  <title>Container constructors &amp; destructors</title>  <link href="../cppreference.css" rel="stylesheet" type="text/css"></head><body><table>  <tr>  <td>  <div class="body-content">  <div class="header-box">    <a href="../index.html">cppreference.com</a> &gt; <a href=    "index.html">C++ Multisets</a> &gt; <a href=    "container_constructors.html">Container constructors &amp;    destructors</a>  </div>  <div class="name-format">    Container constructors &amp; destructors  </div>  <div class="syntax-name-format">    Syntax:  </div>  <pre class="syntax-box">  #include &lt;set&gt;  container();  container( const container&amp; c );  ~container();</pre>  <p>Every multiset has a default constructor, copy constructor, and  destructor.</p>  <p>The default constructor takes no arguments, creates a new instance  of that multiset, and runs in <a href="../complexity.html">constant  time</a>. The default copy constructor runs in <a href=  "../complexity.html">linear time</a> and can be used to create a new  multiset that is a copy of the given multiset <em>c</em>.</p>  <p>The default destructor is called when the multiset should be  destroyed.</p>  <p>For example, the following code creates a pointer to a vector of  integers and then uses the default multiset constructor to allocate a  memory for a new vector:</p>  <pre class="example-code"> vector&lt;int&gt;* v; v = new vector&lt;int&gt;();           </pre>  <div class="related-name-format">    Related topics:  </div>  <div class="related-content">    (C++ Strings) <a href="../cppstring/resize.html">resize</a>  </div>  </div>  </td>    </tr>  </table></body></html>

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