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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>C++ String Streams</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++ String Streams</a>  </div>  <div class="name-format">    C++ String Streams  </div>  <p>String streams are similar to the <a  href="../cppio/index.html">&lt;iostream&gt;  and &lt;fstream&gt;</a> libraries, except that string streams allow  you to perform I/O on strings instead of streams.  The  &lt;sstream&gt; library provides functionality similar to <a  href="../stdio/sscanf.html">sscanf()</a>  and <a  href="../stdio/sprintf.html">sprintf()</a>  in the standard C library.  Three main classes are available in  &lt;sstream&gt;:</p>  <ul>    <li>stringstream - allows input and output</li>    <li>istringstream - allows input only</li>    <li>ostringstream - allows output only</li>  </ul>  <p>String streams are actually subclasses of iostreams, so  <strong>all of the functions available for iostreams are also  available for stringstream</strong>.  See the <a  href="../cppio/index.html">C++ I/O  functions</a> for more information.</p>  <p><a href="all.html">Display all entries</a> for C++ String Streams  on one page, or view entries individually:</p>  <table class="category-table">    <tr class="category-table-tr-2">      <td class="category-table-td">      <a href="constructors.html">Constructors</a>      </td>      <td class="category-table-td">      create new string streams      </td>    </tr>    <tr class="category-table-tr-1">      <td class="category-table-td">      <a href="operators.html">Operators</a>      </td>      <td class="category-table-td">      read from and write to string streams      </td>    </tr>    <tr class="category-table-tr-2">      <td class="category-table-td">      <a href="rdbuf.html">rdbuf</a>      </td>      <td class="category-table-td">      get the buffer for a string stream      </td>    </tr>    <tr class="category-table-tr-1">      <td class="category-table-td">      <a href="str.html">str</a>      </td>      <td class="category-table-td">      get or set the stream's string      </td>    </tr>  </table>  </div>  </td>    </tr>  </table></body></html>
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