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<!DOCTYPE HTML PUBLIC "-//W3O//DTD W3 HTML 2.0//EN"><!-- This collection of hypertext pages is Copyright 1995-2005 by Steve Summit. --><!-- Content from the book "C Programming FAQs: Frequently Asked Questions" --><!-- (Addison-Wesley, 1995, ISBN 0-201-84519-9) is made available here by --><!-- permission of the author and the publisher as a service to the community. --><!-- It is intended to complement the use of the published text --><!-- and is protected by international copyright laws. --><!-- The on-line content may be accessed freely for personal use --><!-- but may not be published or retransmitted without explicit permission. --><!-- --><!-- this page built Sat Dec 24 21:47:45 2005 by faqproc version 2.7 --><!-- from source file init.sgml dated Fri Jul 2 21:52:44 2004 --><!-- corresponding to FAQ list version 4.0 --><html><!-- Mirrored from c-faq.com/decl/autoaggrinit.html by HTTrack Website Copier/3.x [XR&CO'2008], Sat, 14 Mar 2009 07:58:45 GMT --><head><meta name=GENERATOR content="faqproc"><title>Question 1.31</title><link href="initval.html" rev=precedes><link href="fcninit.html" rel=precedes><link href="index.html" rev=subdocument></head><body bgcolor="#ffffff"><a href="initval.html" rev=precedes><img src="../images/buttonleft.gif" alt="prev"></a><a href="index.html" rev=subdocument><img src="../images/buttonup.gif" alt="up"></a><a href="fcninit.html" rel=precedes><img src="../images/buttonright.gif" alt="next"></a> <a href="../index-2.html"><img src="../images/buttontop.gif" alt="top/contents"></a><a href="../search.html"><img src="../images/buttonsrch.gif" alt="search"></a><hr><p><!-- qbegin --><h1>comp.lang.c FAQ list<font color=blue>·</font><!-- qtag -->Question 1.31</h1><p><font face=Helvetica size=8 color=blue><b>Q:</b></font>This code, straight out of a book, isn't compiling:<pre>int f(){ char a[] = "Hello, world!";}</pre></p><p><hr><p><font face=Helvetica size=8 color=blue><b>A:</b></font>Perhaps you havean old,pre-ANSI compiler,which doesn't allow initialization of ``automatic aggregates''(i.e. non-<TT>static</TT> local arrays, structures,orunions).You have four possible workarounds:<OL><li>Ifthe array won't be written toor ifyou won't need a fresh copyduringanysubsequent calls,you can declare it <TT>static</TT>(or perhaps make it global).<li>Ifthe array won't be written to,you couldreplace it with a pointer:<pre> f() { char *a = "Hello, world!"; }</pre>Youcan always initialize local <TT>char *</TT> variablesto point tostring literals(butsee question<a href="strlitinit.html">1.32</a>).<li>If neither ofthe aboveconditions hold,you'll have toinitializethe arrayby handwith <TT>strcpy</TT>whenthe functionis called:<pre> f() { char a[14]; strcpy(a, "Hello, world!"); }</pre><li>Get an ANSI-compatible compiler.</OL></p><p>See also question<a href="../ansi/preansi.html">11.29a</a>.</p><!-- aend --><p><hr><a href="initval.html" rev=precedes><img src="../images/buttonleft.gif" alt="prev"></a><a href="index.html" rev=subdocument><img src="../images/buttonup.gif" alt="up"></a><a href="fcninit.html" rel=precedes><img src="../images/buttonright.gif" alt="next"></a> <a href="../questions.html"><img src="../images/buttontop.gif" alt="contents"></a><a href="../search.html"><img src="../images/buttonsrch.gif" alt="search"></a><br><!-- lastfooter --><a href="../about.html">about this FAQ list</a> <a href="../eskimo.html">about eskimo</a> <a href="../search.html">search</a> <a href="../feedback.html">feedback</a> <a href="copyright.html">copyright</a><p>Hosted by<a href="http://www.eskimo.com/"><img src="../../www.eskimo.com/img/link/eskitiny.gif" alt="Eskimo North"></a></body><!-- Mirrored from c-faq.com/decl/autoaggrinit.html by HTTrack Website Copier/3.x [XR&CO'2008], Sat, 14 Mar 2009 07:58:45 GMT --></html>⌨️ 快捷键说明
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