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115 lines
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115 lines
4.7 KiB
HTML
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<a name="fputws"></a>
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<div class="header">
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<p>
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Next: <a href="fread.html#fread" accesskey="n" rel="next">fread</a>, Previous: <a href="fputwc.html#fputwc" accesskey="p" rel="prev">fputwc</a>, Up: <a href="Stdio.html#Stdio" accesskey="u" rel="up">Stdio</a> [<a href="Document-Index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Document-Index.html#Document-Index" title="Index" rel="index">Index</a>]</p>
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<a name="fputws_002c-fputws_005funlocked_002d_002d_002dwrite-a-wide-character-string-in-a-file-or-stream"></a>
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<h3 class="section">4.23 <code>fputws</code>, <code>fputws_unlocked</code>—write a wide character string in a file or stream</h3>
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<a name="index-fputws"></a>
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<a name="index-fputws_005funlocked"></a>
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<a name="index-_005ffputws_005fr"></a>
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<a name="index-_005ffputws_005funlocked_005fr"></a>
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<p><strong>Synopsis</strong>
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</p><div class="example">
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<pre class="example">#include <wchar.h>
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int fputws(const wchar_t *__restrict <var>ws</var>, FILE *__restrict <var>fp</var>);
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#define _GNU_SOURCE
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#include <wchar.h>
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int fputws_unlocked(const wchar_t *__restrict <var>ws</var>, FILE *__restrict <var>fp</var>);
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#include <wchar.h>
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int _fputws_r(struct _reent *<var>ptr</var>, const wchar_t *<var>ws</var>,
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FILE *<var>fp</var>);
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#include <wchar.h>
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int _fputws_unlocked_r(struct _reent *<var>ptr</var>, const wchar_t *<var>ws</var>,
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FILE *<var>fp</var>);
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</pre></div>
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<p><strong>Description</strong><br>
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<code>fputws</code> writes the wide character string at <var>ws</var> (but without the
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trailing null) to the file or stream identified by <var>fp</var>.
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</p>
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<p><code>fputws_unlocked</code> is a non-thread-safe version of <code>fputws</code>.
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<code>fputws_unlocked</code> may only safely be used within a scope
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protected by flockfile() (or ftrylockfile()) and funlockfile(). This
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function may safely be used in a multi-threaded program if and only
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if they are called while the invoking thread owns the (FILE *)
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object, as is the case after a successful call to the flockfile() or
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ftrylockfile() functions. If threads are disabled, then
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<code>fputws_unlocked</code> is equivalent to <code>fputws</code>.
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</p>
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<p><code>_fputws_r</code> and <code>_fputws_unlocked_r</code> are simply reentrant versions of the
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above that take an additional reentrant struct pointer argument: <var>ptr</var>.
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</p>
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<br>
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<p><strong>Returns</strong><br>
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If successful, the result is a non-negative integer; otherwise, the result
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is <code>-1</code> to indicate an error.
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</p>
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<br>
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<p><strong>Portability</strong><br>
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<code>fputws</code> is required by C99 and POSIX.1-2001.
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</p>
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<p><code>fputws_unlocked</code> is a GNU extension.
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