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<td class="t-dcl-nopad"> <div><span class="mw-geshi cpp source-cpp"><a href="time_t.html"><span class="kw864">std::<span class="me2">time_t</span></span></a> time<span class="br0">(</span> <a href="time_t.html"><span class="kw864">std::<span class="me2">time_t</span></span></a> <span class="sy2">*</span>time <span class="br0">)</span><span class="sy4">;</span></span></div>
</td>
<td class="t-dcl-nopad">  </td>
<td class="t-dcl-nopad">  </td>
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<p>Returns the current calendar time encoded as a <span class="t-lc"><a href="time_t.html" title="cpp/chrono/c/time t">std::time_t</a></span> object. 
</p>
<table id="toc" class="toc"><tr><td>
<div id="toctitle"><h2>Contents</h2></div>
<ul>
<li class="toclevel-1 tocsection-1"><a href="time.html%23Parameters"><span class="tocnumber">1</span> <span class="toctext">Parameters</span></a></li>
<li class="toclevel-1 tocsection-2"><a href="time.html%23Return_value"><span class="tocnumber">2</span> <span class="toctext">Return value</span></a></li>
<li class="toclevel-1 tocsection-3"><a href="time.html%23Notes"><span class="tocnumber">3</span> <span class="toctext">Notes</span></a></li>
<li class="toclevel-1 tocsection-4"><a href="time.html%23Example"><span class="tocnumber">4</span> <span class="toctext">Example</span></a></li>
<li class="toclevel-1 tocsection-5"><a href="time.html%23See_also"><span class="tocnumber">5</span> <span class="toctext">See also</span></a></li>
</ul>
</td></tr></table>
<h3>
<span class="editsection">[<a href="http%3A//en.cppreference.com/mwiki/index.php" title="Edit section: Parameters">edit</a>]</span> <span class="mw-headline" id="Parameters">Parameters</span>
</h3>
<table class="t-par-begin">


<tr class="t-par">
<td>  time
</td>
<td> -
</td>
<td>  pointer to a <span class="t-lc"><a href="time_t.html" title="cpp/chrono/c/time t">std::time_t</a></span> object to store the time in or <span class="t-lc"><a href="../../types/NULL.html" title="cpp/types/NULL">NULL</a></span>
</td>
</tr>
</table>
<h3>
<span class="editsection">[<a href="http%3A//en.cppreference.com/mwiki/index.php" title="Edit section: Return value">edit</a>]</span> <span class="mw-headline" id="Return_value">Return value</span>
</h3>
<p>Current calendar time encoded as <span class="t-lc"><a href="time_t.html" title="cpp/chrono/c/time t">std::time_t</a></span> object on success, <span class="t-c"><span class="mw-geshi cpp source-cpp"><span class="br0">(</span><a href="time_t.html"><span class="kw864">std::<span class="me2">time_t</span></span></a><span class="br0">)</span><span class="br0">(</span><span class="sy2">-</span><span class="nu0">1</span><span class="br0">)</span></span></span> on error. If the argument is not <span class="t-lc"><a href="../../types/NULL.html" title="cpp/types/NULL">NULL</a></span>, the return value is also set to the object pointed by <code>time</code>.
</p>
<h3>
<span class="editsection">[<a href="http%3A//en.cppreference.com/mwiki/index.php" title="Edit section: Notes">edit</a>]</span> <span class="mw-headline" id="Notes">Notes</span>
</h3>
<p>The encoding of calendar time in <span class="t-lc"><a href="time_t.html" title="cpp/chrono/c/time t">std::time_t</a></span> is unspecified, but most systems conform to <a rel="nofollow" class="external text" href="http%3A//pubs.opengroup.org/onlinepubs/9699919799/functions/time.html">POSIX specification</a> and return a value of integral type holding the number of seconds since <a rel="nofollow" class="external text" href="http%3A//pubs.opengroup.org/onlinepubs/9699919799/basedefs/V1_chap04.html%23tag_04_15">the Epoch</a>. Implementations in which <span class="t-lc"><a href="time_t.html" title="cpp/chrono/c/time t">std::time_t</a></span> is a 32-bit signed integer (many historical implementations) fail in the year 2038.
</p>
<h3>
<span class="editsection">[<a href="http%3A//en.cppreference.com/mwiki/index.php" title="Edit section: Example">edit</a>]</span> <span class="mw-headline" id="Example">Example</span>
</h3>
<div class="t-example">
<div class="t-example-live-link"><div class="coliru-btn coliru-btn-run-init">Run this code</div></div>
<div dir="ltr" class="mw-geshi" style="text-align: left;"><div class="cpp source-cpp"><pre class="de1"><span class="co2">#include &lt;ctime&gt;</span>
<span class="co2">#include &lt;iostream&gt;</span>
 
<span class="kw4">int</span> main<span class="br0">(</span><span class="br0">)</span>
<span class="br0">{</span>
    <a href="time_t.html"><span class="kw864">std::<span class="me2">time_t</span></span></a> result <span class="sy1">=</span> std<span class="sy4">::</span><span class="me2">time</span><span class="br0">(</span>nullptr<span class="br0">)</span><span class="sy4">;</span>
    <a href="../../io/basic_ostream.html"><span class="kw1439">std::<span class="me2">cout</span></span></a> <span class="sy1">&lt;&lt;</span> <a href="asctime.html"><span class="kw855">std::<span class="me2">asctime</span></span></a><span class="br0">(</span><a href="localtime.html"><span class="kw860">std::<span class="me2">localtime</span></span></a><span class="br0">(</span><span class="sy3">&amp;</span>result<span class="br0">)</span><span class="br0">)</span>
              <span class="sy1">&lt;&lt;</span> result <span class="sy1">&lt;&lt;</span> <span class="st0">" seconds since the Epoch<span class="es1">\n</span>"</span><span class="sy4">;</span>
<span class="br0">}</span></pre></div></div>
<p>Output:
</p>
<div dir="ltr" class="mw-geshi" style="text-align: left;"><div class="text source-text"><pre class="de1">Wed Sep 21 10:27:52 2011
1316615272 seconds since the Epoch</pre></div></div> 
</div>
<h3>
<span class="editsection">[<a href="http%3A//en.cppreference.com/mwiki/index.php" title="Edit section: See also">edit</a>]</span> <span class="mw-headline" id="See_also">See also</span>
</h3>
<table class="t-dsc-begin">

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><a href="localtime.html" title="cpp/chrono/c/localtime"> <span class="t-lines"><span>localtime</span></span></a></div></div>
</td>
<td>   converts time since epoch to calendar time expressed as local time <br> <span class="t-mark">(function)</span> 
</td>
</tr>

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><a href="gmtime.html" title="cpp/chrono/c/gmtime"> <span class="t-lines"><span>gmtime</span></span></a></div></div>
</td>
<td>   converts time since epoch to calendar time expressed as Universal Coordinated Time <br> <span class="t-mark">(function)</span> 
</td>
</tr>

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div">
<div><a href="../system_clock.html" title="cpp/chrono/system clock"> <span class="t-lines"><span>system_clock</span></span></a></div>
<div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div>
</div>
</td>
<td>   wall clock time from the system-wide realtime clock   <br> <span class="t-mark">(class)</span> 
</td>
</tr>

<tr class="t-dsc">
<td colspan="2"> <div class="t-dsc-see">
<span><a href="../../../c/chrono/time.html" title="c/chrono/time">C documentation</a></span> for <span class="t-dsc-see-tt"><span>time</span></span>
</div>
</td>
</tr>

</table>

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