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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>copy_n</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> > <a href= "index.html">C++ Algorithms</a> > <a href= "copy_n.html">copy_n</a> </div> <div class="name-format"> copy_n </div> <div class="syntax-name-format"> Syntax: </div> <pre class="syntax-box"> #include <algorithm> iterator copy_n( iterator from, size_t num, iterator to ); </pre> <p>The copy_n() function copies <em>num</em> elements starting at <em>from</em> to the destination pointed at by <em>to</em>. To put it another way, copy_n() performs <em>num</em> assignments and duplicates a subrange.</p> <p>The return value of copy_n() is an iterator that points to the last element that was copied, i.e. (to + num).</p> <p>This function runs in <a href="../complexity.html">linear time</a>.</p> <div class="related-name-format"> Related topics: </div> <div class="related-content"> <a href="copy.html">copy</a><br> <a href="copy_backward.html">copy_backward</a><br> <a href="swap.html">swap</a> </div> </div> </td> </tr> </table></body></html>⌨️ 快捷键说明
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