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<a name="fputws_002c-fputws_005funlocked_002d_002d_002dwrite-a-wide-character-string-in-a-file-or-stream"></a>
<h3 class="section">4.23 <code>fputws</code>, <code>fputws_unlocked</code>&mdash;write a wide character string in a file or stream</h3>
<a name="index-fputws"></a>
<a name="index-fputws_005funlocked"></a>
<a name="index-_005ffputws_005fr"></a>
<a name="index-_005ffputws_005funlocked_005fr"></a>
<p><strong>Synopsis</strong>
</p><div class="example">
<pre class="example">#include &lt;wchar.h&gt;
int fputws(const wchar_t *__restrict <var>ws</var>, FILE *__restrict <var>fp</var>);

#define _GNU_SOURCE
#include &lt;wchar.h&gt;
int fputws_unlocked(const wchar_t *__restrict <var>ws</var>, FILE *__restrict <var>fp</var>);

#include &lt;wchar.h&gt;
int _fputws_r(struct _reent *<var>ptr</var>, const wchar_t *<var>ws</var>,
    FILE *<var>fp</var>);

#include &lt;wchar.h&gt;
int _fputws_unlocked_r(struct _reent *<var>ptr</var>, const wchar_t *<var>ws</var>,
    FILE *<var>fp</var>);

</pre></div>
<p><strong>Description</strong><br>
<code>fputws</code> writes the wide character string at <var>ws</var> (but without the
trailing null) to the file or stream identified by <var>fp</var>.
</p>
<p><code>fputws_unlocked</code> is a non-thread-safe version of <code>fputws</code>.
<code>fputws_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>fputws_unlocked</code> is equivalent to <code>fputws</code>.
</p>
<p><code>_fputws_r</code> and <code>_fputws_unlocked_r</code> are simply reentrant versions of the
above that take an additional reentrant struct pointer argument: <var>ptr</var>.
</p>
<br>
<p><strong>Returns</strong><br>
If successful, the result is a non-negative integer; otherwise, the result
is <code>-1</code> to indicate an error.
</p>
<br>
<p><strong>Portability</strong><br>
<code>fputws</code> is required by C99 and POSIX.1-2001.
</p>
<p><code>fputws_unlocked</code> is a GNU extension.
</p>
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