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<a name="putwchar_002c-putwchar_005funlocked_002d_002d_002dwrite-a-wide-character-to-standard-output"></a>
<h3 class="section">4.51 <code>putwchar</code>, <code>putwchar_unlocked</code>&mdash;write a wide character to standard output</h3>
<a name="index-putwchar"></a>
<a name="index-putwchar_005funlocked"></a>
<a name="index-_005fputwchar_005fr"></a>
<a name="index-_005fputwchar_005funlocked_005fr"></a>
<p><strong>Synopsis</strong>
</p><div class="example">
<pre class="example">#include &lt;wchar.h&gt;
wint_t putwchar(wchar_t <var>wc</var>);

#include &lt;wchar.h&gt;
wint_t putwchar_unlocked(wchar_t <var>wc</var>);

#include &lt;wchar.h&gt;
wint_t _putwchar_r(struct _reent *<var>reent</var>, wchar_t <var>wc</var>);

#include &lt;wchar.h&gt;
wint_t _putwchar_unlocked_r(struct _reent *<var>reent</var>, wchar_t <var>wc</var>);

</pre></div>
<p><strong>Description</strong><br>
The <code>putwchar</code> function or macro is the wide-character equivalent of
the <code>putchar</code> function. It writes the wide character wc to stdout.
</p>
<p><code>putwchar_unlocked</code> is a non-thread-safe version of <code>putwchar</code>.
<code>putwchar_unlocked</code> may only safely be used within a scope
protected by flockfile() (or ftrylockfile()) and funlockfile().  This
function may safely be used in a multi-threaded program if and only
if they are called while the invoking thread owns the (FILE *)
object, as is the case after a successful call to the flockfile() or
ftrylockfile() functions.  If threads are disabled, then
<code>putwchar_unlocked</code> is equivalent to <code>putwchar</code>.
</p>
<p>The alternate functions <code>_putwchar_r</code> and <code>_putwchar_unlocked_r</code> are
reentrant versions of the above.  The extra argument <var>reent</var> is a pointer
to a reentrancy structure.
</p>
<br>
<p><strong>Returns</strong><br>
If successful, <code>putwchar</code> returns its argument <var>wc</var>.  If an error
intervenes, the result is <code>EOF</code>.  You can use &lsquo;<code>ferror(stdin)</code>&rsquo; to
query for errors.
</p>
<br>
<p><strong>Portability</strong><br>
<code>putwchar</code> is required by C99.
</p>
<p><code>putwchar_unlocked</code> is a GNU extension.
</p>
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