getchar.html

来自「unix 下的C开发手册,还用详细的例程。」· HTML 代码 · 共 63 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>getchar</title></head><body bgcolor=white><center><font size=2>The Single UNIX &reg; Specification, Version 2<br>Copyright &copy; 1997 The Open Group</font></center><hr size=2 noshade><h4><a name = "tag_000_005_461">&nbsp;</a>NAME</h4><blockquote>getchar - get a byte from a <i><a href="stdin.html">stdin</a></i> stream</blockquote><h4><a name = "tag_000_005_462">&nbsp;</a>SYNOPSIS</h4><blockquote><pre><code>#include &lt;<a href="stdio.h.html">stdio.h</a>&gt;int getchar(void);</code></pre></blockquote><h4><a name = "tag_000_005_463">&nbsp;</a>DESCRIPTION</h4><blockquote>The<i>getchar()</i>function is equivalent to<i>getc(stdin)</i>.</blockquote><h4><a name = "tag_000_005_464">&nbsp;</a>RETURN VALUE</h4><blockquote>Refer to<i><a href="fgetc.html">fgetc()</a></i>.</blockquote><h4><a name = "tag_000_005_465">&nbsp;</a>ERRORS</h4><blockquote>Refer to<i><a href="fgetc.html">fgetc()</a></i>.</blockquote><h4><a name = "tag_000_005_466">&nbsp;</a>EXAMPLES</h4><blockquote>None.</blockquote><h4><a name = "tag_000_005_467">&nbsp;</a>APPLICATION USAGE</h4><blockquote>If the integer value returned by<i>getchar()</i>is stored into a variable of type<b>char</b>and then compared againstthe integer constant EOF,the comparison may never succeed,because sign-extension of a variable of type<b>char</b>on widening to integer is implementation-dependent.</blockquote><h4><a name = "tag_000_005_468">&nbsp;</a>FUTURE DIRECTIONS</h4><blockquote>None.</blockquote><h4><a name = "tag_000_005_469">&nbsp;</a>SEE ALSO</h4><blockquote><i><a href="getc.html">getc()</a></i>,<i><a href="stdio.h.html">&lt;stdio.h&gt;</a></i>.</blockquote><h4>DERIVATION</h4><blockquote>Derived from Issue 1 of the SVID.</blockquote><hr size=2 noshade><center><font size=2>UNIX &reg; is a registered Trademark of The Open Group.<br>Copyright &copy; 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>

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