getwc.html
来自「unix 下的C开发手册,还用详细的例程。」· HTML 代码 · 共 69 行
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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>getwc</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_005_806"> </a>NAME</h4><blockquote>getwc - get a wide character from a stream</blockquote><h4><a name = "tag_000_005_807"> </a>SYNOPSIS</h4><blockquote><pre><code>#include <<a href="stdio.h.html">stdio.h</a>>#include <<a href="wchar.h.html">wchar.h</a>>wint_t getwc(FILE *<i>stream</i>);</code></pre></blockquote><h4><a name = "tag_000_005_808"> </a>DESCRIPTION</h4><blockquote>The<i>getwc()</i>function is equivalent to<i><a href="fgetwc.html">fgetwc()</a></i>,except that if it is implemented as a macro it may evaluate<i>stream</i>more than once, so the argument should never be an expression with sideeffects.</blockquote><h4><a name = "tag_000_005_809"> </a>RETURN VALUE</h4><blockquote>Refer to<i><a href="fgetwc.html">fgetwc()</a></i>.</blockquote><h4><a name = "tag_000_005_810"> </a>ERRORS</h4><blockquote>Refer to<i><a href="fgetwc.html">fgetwc()</a></i>.</blockquote><h4><a name = "tag_000_005_811"> </a>EXAMPLES</h4><blockquote>None.</blockquote><h4><a name = "tag_000_005_812"> </a>APPLICATION USAGE</h4><blockquote>Because it may be implemented as a macro,<i>getwc()</i>may treat incorrectly a<i>stream</i>argument with side effects. In particular,<i>getwc</i>(*<i>f</i>++)will not necessarily work as expected. Therefore, use of this interface is not recommended;<i><a href="fgetwc.html">fgetwc()</a></i>should be used instead.</blockquote><h4><a name = "tag_000_005_813"> </a>FUTURE DIRECTIONS</h4><blockquote>None.</blockquote><h4><a name = "tag_000_005_814"> </a>SEE ALSO</h4><blockquote><i><a href="fgetwc.html">fgetwc()</a></i>,<i><a href="stdio.h.html"><stdio.h></a></i>,<i><a href="wchar.h.html"><wchar.h></a></i>.</blockquote><h4>DERIVATION</h4><blockquote>Derived from the MSE working draft.</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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