78 lines
3.5 KiB
HTML
78 lines
3.5 KiB
HTML
<!DOCTYPE html>
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<html lang="zh" dir="ltr" class="client-nojs" xmlns="http://www.w3.org/1999/xhtml" xml:lang="zh">
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<head><meta http-equiv="x-ua-compatible" content="ie=edge">
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
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<title>std::time_t</title>
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<link rel="stylesheet" href="ext.css" />
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<link rel="stylesheet" href="site_modules.css" />
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</head>
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<body class="mediawiki ltr sitedir-ltr ns-0 ns-subject page-cpp_chrono_c_time_t skin-cppreference2 action-view cpp-navbar">
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<div id="cpp-content-base">
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<div id="content"><a id="top"></a>
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<h1 id="firstHeading" class="firstHeading"><span style="font-size:0.7em; line-height:130%">std::</span>time_t</h1>
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<div id="bodyContent">
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<div id="contentSub"><span class="subpages">< <a href="cpp.html">cpp</a>‎ | <a href="cpp-chrono.html">chrono</a>‎ | <a href="cpp-chrono-c.html">c</a></span></div>
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<div id="mw-content-text" lang="zh" dir="ltr" class="mw-content-ltr" xml:lang="zh">
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<table class="t-dcl-begin">
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<tbody>
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<div>定义于头文件 <code><a href="cpp-header-ctime.html"><ctime></a></code></div>
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<td></td>
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<div><span class="mw-geshi cpp source-cpp"><span class="kw1">typedef</span> <span class="coMULTI">/* 未说明 */</span> time_t<span class="sy4">;</span></span></div>
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<p>足以表示时间的算术类型。</p>
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<p>虽然标准中没有给出定义，但是该类型几乎总是整数类型，表示自 1970 年 1 月 1 日 00:00 UTC 以来所经过的秒数（不计闰秒），对应 <a href="https://en.wikipedia.org/wiki/Unix_time" class="extiw" title="enwiki:Unix time">POSIX 时间</a>。</p>
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<h3><span class="mw-headline" id=".E5.8F.82.E9.98.85">参阅</span></h3>
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<table class="t-dsc-begin">
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<td>
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<div class="t-dsc-member-div">
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<div><a href="cpp-chrono-c-time.html"><span class="t-lines"><span>time</span></span></a></div>
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</div>
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</td>
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<td>返回自纪元起计的系统当前时间<br />
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<span class="t-mark">(函数)</span></td>
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</tr>
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<tr class="t-dsc">
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<td>
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<div class="t-dsc-member-div">
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<div><a href="cpp-chrono-c-localtime.html"><span class="t-lines"><span>localtime</span></span></a></div>
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</div>
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</td>
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<td>转换纪元起时间为以本地时间表示的日历时间<br />
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<span class="t-mark">(函数)</span></td>
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</tr>
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<tr class="t-dsc">
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<td>
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<div class="t-dsc-member-div">
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<div><a href="cpp-chrono-c-gmtime.html"><span class="t-lines"><span>gmtime</span></span></a></div>
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</div>
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</td>
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<td>转换纪元起时间为以协调世界时表示的日历时间<br />
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<span class="t-mark">(函数)</span></td>
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</tr>
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</table>
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</div>
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<div class="visualClear"></div>
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</div>
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</body>
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</html>
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