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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!-- but may not be published or retransmitted without explicit permission.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 decl.sgml dated Wed Dec 21 12:56:18 2005 --><!-- corresponding to FAQ list version 4.0 --><html><!-- Mirrored from c-faq.com/decl/octabyte.html by HTTrack Website Copier/3.x [XR&CO'2008], Sat, 14 Mar 2009 07:58:41 GMT --><head><meta name=GENERATOR content="faqproc"><title>Question 1.4</title><link href="int16.html" rev=precedes><link href="charstarws.html" rel=precedes><link href="index.html" rev=subdocument></head><body bgcolor="#ffffff"><a href="int16.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="charstarws.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 1.4</h1><p><font face=Helvetica size=8 color=blue><b>Q:</b></font>What should the 64-bit type beon amachine that can support it?</p><p><hr><p><font face=Helvetica size=8 color=blue><b>A:</b></font>ThenewC99 Standardspecifies type <TT>long long</TT> as effectively beingat least 64 bits,and this type has been implemented by a number of compilersfor some time.(Others have implemented extensions such as <TT>__longlong</TT>.)On the other hand,it's also appropriate toimplementtype <TT>short int</TT> as 16,<TT>int</TT> as 32,and <TT>long int</TT> as 64 bits,and some compilers do.</p><p>See alsoquestions <a href="int16.html">1.3</a> and <a href="../resources/mplib.html">18.15d</a>.</p><p>Additional links:Part of a<a href="longlong.awjd.html">proposal for <TT>long long</TT> for C9X</a>by Alan Watson and Jutta Degener,succinctly outlining the arguments.</p><p>References:C9X Sec. 5.2.4.2.1, Sec. 6.1.2.5<br></p><!-- aend --><p><hr><a href="int16.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="charstarws.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/octabyte.html by HTTrack Website Copier/3.x [XR&CO'2008], Sat, 14 Mar 2009 07:58:41 GMT --></html>⌨️ 快捷键说明
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