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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>accumulate</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= "accumulate.html">accumulate</a> </div> <div class="name-format"> accumulate </div> <div class="syntax-name-format"> Syntax: </div> <pre class="syntax-box"> #include <numeric> <a href="../containers.html">TYPE</a> accumulate( iterator start, iterator end, <a href="../containers.html">TYPE</a> val ); <a href="../containers.html">TYPE</a> accumulate( iterator start, iterator end, <a href="../containers.html">TYPE</a> val, BinaryFunction f );</pre> <p>The accummulate() function computes the sum of <em>val</em> and all of the elements in the range [<em>start</em>,<em>end</em>).</p> <p>If the binary function <em>f</em> if specified, it is used instead of the + operator to perform the summation.</p> <p>accumulate() runs in <a href="../complexity.html">linear time</a>.</p> <div class="related-name-format"> Related topics: </div> <div class="related-content"> <a href="adjacent_difference.html">adjacent_difference</a><br> <a href="count.html">count</a><br> <a href="inner_product.html">inner_product</a><br> <a href="partial_sum.html">partial_sum</a> </div> </div> </td> </tr> </table></body></html>⌨️ 快捷键说明
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