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<table class="t-dcl-begin"><tbody>
<tr class="t-dcl">
<td> <div><span class="mw-geshi cpp source-cpp"><a href="../ios_base/iostate.html"><span class="kw1694">std::<span class="me2">ios_base</span><span class="sy4">::</span><span class="me2">iostate</span></span></a> exceptions<span class="br0">&#40;</span><span class="br0">&#41;</span> <span class="kw4">const</span><span class="sy4">;</span></span></div></td>
<td> (1) </td>
<td class="t-dcl-nopad">  </td>
</tr>
<tr class="t-dcl">
<td> <div><span class="mw-geshi cpp source-cpp"><span class="kw4">void</span> exceptions<span class="br0">&#40;</span> <a href="../ios_base/iostate.html"><span class="kw1694">std::<span class="me2">ios_base</span><span class="sy4">::</span><span class="me2">iostate</span></span></a> except <span class="br0">&#41;</span><span class="sy4">;</span></span></div></td>
<td> (2) </td>
<td class="t-dcl-nopad">  </td>
</tr>
<tr class="t-dcl-sep"><td></td><td></td><td></td></tr>
</tbody></table>
<p>Gets and sets the exception mask of the stream. The exception mask determines the error states, on occurrence of which the stream throws exception of type <span class="t-lc"><a href="../ios_base/failure.html" title="cpp/io/ios base/failure">failure</a></span>. 
</p>
<div class="t-li1"><span class="t-li">1)</span> Returns the exception mask.</div>
<div class="t-li1"><span class="t-li">2)</span> Sets the exception mask to <code>except</code>.</div>
<table id="toc" class="toc"><tr><td><div id="toctitle"><h2>Contents</h2></div>
<ul>
<li class="toclevel-1 tocsection-1"><a href="exceptions.html#Parameters"><span class="tocnumber">1</span> <span class="toctext">Parameters</span></a></li>
<li class="toclevel-1 tocsection-2"><a href="exceptions.html#Return_value"><span class="tocnumber">2</span> <span class="toctext">Return value</span></a></li>
<li class="toclevel-1 tocsection-3"><a href="exceptions.html#Notes"><span class="tocnumber">3</span> <span class="toctext">Notes</span></a></li>
<li class="toclevel-1 tocsection-4"><a href="exceptions.html#Example"><span class="tocnumber">4</span> <span class="toctext">Example</span></a></li>
</ul>
</td></tr></table>
<h3><span class="editsection">[<a href="http://en.cppreference.com/mwiki/index.php?title=cpp/io/basic_ios/exceptions&amp;action=edit&amp;section=1" 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>  except
</td>
<td> -
</td>
<td>  exception mask
</td></tr></table>
<h3><span class="editsection">[<a href="http://en.cppreference.com/mwiki/index.php?title=cpp/io/basic_ios/exceptions&amp;action=edit&amp;section=2" title="Edit section: Return value">edit</a>]</span> <span class="mw-headline" id="Return_value">Return value</span></h3>
<div class="t-li1"><span class="t-li">1)</span> The current exception mask.</div>
<div class="t-li1"><span class="t-li">2)</span> (none)</div>
<h3><span class="editsection">[<a href="http://en.cppreference.com/mwiki/index.php?title=cpp/io/basic_ios/exceptions&amp;action=edit&amp;section=3" title="Edit section: Notes">edit</a>]</span> <span class="mw-headline" id="Notes">Notes</span></h3>
<table class="metadata plainlinks ambox mbox-small-left ambox-notice" style=""><tr><td class="mbox-empty-cell"></td><td class="mbox-text" style="">This section is incomplete<br />Reason: discuss <a rel="nofollow" class="external text" href="http://cplusplus.github.io/LWG/lwg-active.html#2349">LWG2349</a> and link from ios_base::clear, and from (un)formatted(i/o)utputfunction concept pages (or perhaps the behavior should be fully elaborated on the concepts pages and linked from here). See also <a rel="nofollow" class="external text" href="http://stackoverflow.com/a/35089910">stackoverflow.com/a/35089910</a> </td></tr></table>
<h3><span class="editsection">[<a href="http://en.cppreference.com/mwiki/index.php?title=cpp/io/basic_ios/exceptions&amp;action=edit&amp;section=4" 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;iostream&gt;</span>
<span class="co2">#include &lt;fstream&gt;</span>
&#160;
<span class="kw4">int</span> main<span class="br0">&#40;</span><span class="br0">&#41;</span> 
<span class="br0">&#123;</span>
    <span class="kw4">int</span> ivalue<span class="sy4">;</span>
    <span class="kw1">try</span> <span class="br0">&#123;</span>
        <a href="../basic_ifstream.html"><span class="kw1729">std::<span class="me2">ifstream</span></span></a> in<span class="br0">&#40;</span><span class="st0">&quot;in.txt&quot;</span><span class="br0">&#41;</span><span class="sy4">;</span>
        in.<span class="me1">exceptions</span><span class="br0">&#40;</span>std<span class="sy4">::</span><span class="me2">ifstream</span><span class="sy4">::</span><span class="me2">failbit</span><span class="br0">&#41;</span><span class="sy4">;</span>
        in <span class="sy1">&gt;&gt;</span> ivalue<span class="sy4">;</span>
    <span class="br0">&#125;</span> <span class="kw1">catch</span> <span class="br0">&#40;</span><a href="../ios_base/failure.html"><span class="kw1667">std::<span class="me2">ios_base</span><span class="sy4">::</span><span class="me2">failure</span></span></a> <span class="sy3">&amp;</span>fail<span class="br0">&#41;</span> <span class="br0">&#123;</span>
        <span class="co1">// handle exception here</span>
    <span class="br0">&#125;</span>
<span class="br0">&#125;</span></pre></div></div>
<p><br /> 
</p>
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