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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN"><html><head><!-- Copyright 1997 The Open Group, All Rights Reserved --><title>wctob</title></head><body bgcolor=white><center><font size=2>The Single UNIX ® Specification, Version 2<br>Copyright © 1997 The Open Group</font></center><hr size=2 noshade><h4><a name = "tag_000_010_689"> </a>NAME</h4><blockquote>wctob - wide-character to single-byte conversion</blockquote><h4><a name = "tag_000_010_690"> </a>SYNOPSIS</h4><blockquote><pre><code>#include <<a href="stdio.h.html">stdio.h</a>>#include <<a href="wchar.h.html">wchar.h</a>>int wctob(wint_t <i>c</i>);</code></pre></blockquote><h4><a name = "tag_000_010_691"> </a>DESCRIPTION</h4><blockquote>The<i>wctob()</i>function determines whether<i>c</i>corresponds to a member of the extended character set whose character representation is a single byte when in the initial shiftstate.<p>The behaviour of this function is affected by the LC_CTYPE category ofthe current locale.</blockquote><h4><a name = "tag_000_010_692"> </a>RETURN VALUE</h4><blockquote>The<i>wctob()</i>function returns EOF if<i>c</i>does not correspond to a character with length one in theinitial shift state. Otherwise, it returns the single-byterepresentation of that character.</blockquote><h4><a name = "tag_000_010_693"> </a>ERRORS</h4><blockquote>No errors are defined.</blockquote><h4><a name = "tag_000_010_694"> </a>EXAMPLES</h4><blockquote>None.</blockquote><h4><a name = "tag_000_010_695"> </a>APPLICATION USAGE</h4><blockquote>None.</blockquote><h4><a name = "tag_000_010_696"> </a>FUTURE DIRECTIONS</h4><blockquote>None.</blockquote><h4><a name = "tag_000_010_697"> </a>SEE ALSO</h4><blockquote><i><a href="btowc.html">btowc()</a></i>,<i><a href="wchar.h.html"><wchar.h></a></i>.</blockquote><h4>DERIVATION</h4><blockquote>Derived from the ISO/IEC 9899:1990/Amendment 1:1995 (E).</blockquote><hr size=2 noshade><center><font size=2>UNIX ® is a registered Trademark of The Open Group.<br>Copyright © 1997 The Open Group<br> [ <a href="../index.html">Main Index</a> | <a href="../xshix.html">XSH</a> | <a href="../xcuix.html">XCU</a> | <a href="../xbdix.html">XBD</a> | <a href="../cursesix.html">XCURSES</a> | <a href="../xnsix.html">XNS</a> ]</font></center><hr size=2 noshade></body></html>⌨️ 快捷键说明
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