isascii.html

来自「unix 下的C开发手册,还用详细的例程。」· HTML 代码 · 共 61 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>isascii</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_007_020">&nbsp;</a>NAME</h4><blockquote>isascii - test for a 7-bit US-ASCII character</blockquote><h4><a name = "tag_000_007_021">&nbsp;</a>SYNOPSIS</h4><blockquote><pre><code>#include &lt;<a href="ctype.h.html">ctype.h</a>&gt;int isascii(int <i>c</i>);</code></pre></blockquote><h4><a name = "tag_000_007_022">&nbsp;</a>DESCRIPTION</h4><blockquote>The<i>isascii()</i>function tests whether<i>c</i>is a 7-bit US-ASCII character code.<p>The<i>isascii()</i>function is defined on all integer values.</blockquote><h4><a name = "tag_000_007_023">&nbsp;</a>RETURN VALUE</h4><blockquote>The<i>isascii()</i>function returns non-zero if<i>c</i>is a 7-bit US-ASCII character code between 0 and octal 0177 inclusive;otherwise it returns 0.</blockquote><h4><a name = "tag_000_007_024">&nbsp;</a>ERRORS</h4><blockquote>No errors are defined.</blockquote><h4><a name = "tag_000_007_025">&nbsp;</a>EXAMPLES</h4><blockquote>None.</blockquote><h4><a name = "tag_000_007_026">&nbsp;</a>APPLICATION USAGE</h4><blockquote>None.</blockquote><h4><a name = "tag_000_007_027">&nbsp;</a>FUTURE DIRECTIONS</h4><blockquote>None.</blockquote><h4><a name = "tag_000_007_028">&nbsp;</a>SEE ALSO</h4><blockquote><i><a href="ctype.h.html">&lt;ctype.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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