fgetpos.html
来自「unix 下的C开发手册,还用详细的例程。」· HTML 代码 · 共 94 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>fgetpos</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_050"> </a>NAME</h4><blockquote>fgetpos - get current file position information</blockquote><h4><a name = "tag_000_005_051"> </a>SYNOPSIS</h4><blockquote><pre><code>#include <<a href="stdio.h.html">stdio.h</a>>int fgetpos(FILE *<i>stream</i>, fpos_t *<i>pos</i>);</code></pre></blockquote><h4><a name = "tag_000_005_052"> </a>DESCRIPTION</h4><blockquote>The<i>fgetpos()</i>function stores the current value of the file position indicatorfor the stream pointed to by<i>stream</i>in the object pointed to by<i>pos</i>.The value stored contains unspecified information usable by<i><a href="fsetpos.html">fsetpos()</a></i>for repositioning the stream to its position at the timeof the call to<i>fgetpos()</i>.</blockquote><h4><a name = "tag_000_005_053"> </a>RETURN VALUE</h4><blockquote>Upon successful completion,<i>fgetpos()</i>returns 0. Otherwise, it returns a non-zero value and sets<i>errno</i>to indicate the error.</blockquote><h4><a name = "tag_000_005_054"> </a>ERRORS</h4><blockquote>The<i>fgetpos()</i>function will fail if:<dl compact><dt>[EOVERFLOW]<dd>The current value of the file position cannot be represented correctly inan object of type<b>fpos_t</b>.</dl><p>The<i>fgetpos()</i>function may fail if:<dl compact><dt>[EBADF]<dd>The file descriptor underlying<i>stream</i>is not valid.<dt>[ESPIPE]<dd>The file descriptor underlying<i>stream</i>is associated with a pipe or FIFO.</dl></blockquote><h4><a name = "tag_000_005_055"> </a>EXAMPLES</h4><blockquote>None.</blockquote><h4><a name = "tag_000_005_056"> </a>APPLICATION USAGE</h4><blockquote>None.</blockquote><h4><a name = "tag_000_005_057"> </a>FUTURE DIRECTIONS</h4><blockquote>None.</blockquote><h4><a name = "tag_000_005_058"> </a>SEE ALSO</h4><blockquote><i><a href="fopen.html">fopen()</a></i>,<i><a href="ftell.html">ftell()</a></i>,<i><a href="rewind.html">rewind()</a></i>,<i><a href="ungetc.html">ungetc()</a></i>,<i><a href="stdio.h.html"><stdio.h></a></i>.</blockquote><h4>DERIVATION</h4><blockquote>Derived from the ISO C standard.</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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