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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>erase</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++ Strings</a> &gt; <a href="erase.html">erase</a>  </div>  <div class="name-format">    erase  </div>  <div class="syntax-name-format">    Syntax:  </div>  <pre class="syntax-box">  #include &lt;string&gt;  iterator erase( iterator loc );  iterator erase( iterator start, iterator end );  string&amp; erase( <strong>size_type</strong> index = 0, <strong>size_type</strong> num = npos );</pre>  <p>The erase() function either:</p>  <ul>    <li>removes the character pointed to by <em>loc</em>, returning an    iterator to the next character,</li>    <li>removes the characters between <em>start</em> and <em>end</em>    (including the one at <em>start</em> but not the one at    <em>end</em>), returning an iterator to the character after the    last character removed,</li>    <li>or removes <em>num</em> characters from the current string,    starting at <em>index</em>, and returns *this.</li>  </ul>  <p>The parameters <em>index</em> and <em>num</em> have default  values, which means that erase() can be called with just  <em>index</em> to erase all characters after <em>index</em> or with  no arguments to erase all characters.</p>  <p>For example:</p>  <pre class="example-code">   string s(&quot;So, you like donuts, eh? Well, have all the donuts in the world!&quot;);   cout &lt;&lt; &quot;The original string is &#39;&quot; &lt;&lt; s &lt;&lt; &quot;&#39;&quot; &lt;&lt; endl;             s.erase( 50, 14 );   cout &lt;&lt; &quot;Now the string is &#39;&quot; &lt;&lt; s &lt;&lt; &quot;&#39;&quot; &lt;&lt; endl;   s.erase( 24 );   cout &lt;&lt; &quot;Now the string is &#39;&quot; &lt;&lt; s &lt;&lt; &quot;&#39;&quot; &lt;&lt; endl;   s.erase();   cout &lt;&lt; &quot;Now the string is &#39;&quot; &lt;&lt; s &lt;&lt; &quot;&#39;&quot; &lt;&lt; endl;               </pre>  <p>will display</p>  <pre class="example-code">   The original string is &#39;So, you like donuts, eh? Well, have all the donuts in the world!&#39;   Now the string is &#39;So, you like donuts, eh? Well, have all the donuts&#39;   Now the string is &#39;So, you like donuts, eh?&#39;   Now the string is &#39;&#39;         </pre>  <p>erase() runs in <a href="../complexity.html">linear time</a>.</p>  <div class="related-name-format">    Related topics:  </div>  <div class="related-content">    <a href="insert.html">insert</a>  </div>  </div>  </td>    </tr>  </table></body></html>
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