⭐ 欢迎来到虫虫下载站! | 📦 资源下载 📁 资源专辑 ℹ️ 关于我们
⭐ 虫虫下载站

📄 node154.htm

📁 Tutorila for CPP, very good tutorial for CPP
💻 HTM
字号:
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2//FR">
<!--Converted with LaTeX2HTML 97.1 (release) (July 13th, 1997)
 by Nikos Drakos (nikos@cbl.leeds.ac.uk), CBLU, University of Leeds
* revised and updated by:  Marcus Hennecke, Ross Moore, Herb Swan
* with significant contributions from:
  Jens Lippman, Marek Rouchal, Martin Wilck and others -->
<HTML><BLOCKQUOTE><img src="logo.gif" tppabs="http://www.linux-kheops.com/doc/ansi-c/icons.gif/logo.gif" ALIGN=right></A> 
<HEAD>
<TITLE>Directives du pr閜rocesseur</TITLE>
<META NAME="description" CONTENT="Directives du pr閜rocesseur">
<META NAME="keywords" CONTENT="Introduction_ANSI_C">
<META NAME="resource-type" CONTENT="document">
<META NAME="distribution" CONTENT="global">
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=iso_8859_1">
<LINK REL="STYLESHEET" HREF="Introduction_ANSI_C.css" tppabs="http://www.linux-kheops.com/doc/ansi-c/Introduction_ANSI_C.css">
<LINK REL="next" HREF="node155.htm" tppabs="http://www.linux-kheops.com/doc/ansi-c/node155.htm">
<LINK REL="previous" HREF="node153.htm" tppabs="http://www.linux-kheops.com/doc/ansi-c/node153.htm">
<LINK REL="up" HREF="node140.htm" tppabs="http://www.linux-kheops.com/doc/ansi-c/node140.htm">
<LINK REL="next" HREF="node155.htm" tppabs="http://www.linux-kheops.com/doc/ansi-c/node155.htm">
</HEAD>
<BODY BACKGROUND="marge.gif" tppabs="http://www.linux-kheops.com/doc/ansi-c/icons.gif/marge.gif" TEXT=#000000 LINK=#FF0000 VLINK=#1809BB >
<!--Navigation Panel-->
<A NAME="tex2html3549"
 HREF="node155.htm" tppabs="http://www.linux-kheops.com/doc/ansi-c/node155.htm">
<IMG WIDTH="77" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="next"
 SRC="next_motif.gif" tppabs="http://www.linux-kheops.com/doc/ansi-c/icons.gif/next_motif.gif"></A> 
<A NAME="tex2html3545"
 HREF="node140.htm" tppabs="http://www.linux-kheops.com/doc/ansi-c/node140.htm">
<IMG WIDTH="63" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="up"
 SRC="up_motif.gif" tppabs="http://www.linux-kheops.com/doc/ansi-c/icons.gif/up_motif.gif"></A> 
<A NAME="tex2html3539"
 HREF="node153.htm" tppabs="http://www.linux-kheops.com/doc/ansi-c/node153.htm">
<IMG WIDTH="96" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="previous"
 SRC="previous_motif.gif" tppabs="http://www.linux-kheops.com/doc/ansi-c/icons.gif/previous_motif.gif"></A> 
<A NAME="tex2html3547"
 HREF="node1.htm" tppabs="http://www.linux-kheops.com/doc/ansi-c/node1.htm">
<IMG WIDTH="96" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="contents"
 SRC="contents_motif.gif" tppabs="http://www.linux-kheops.com/doc/ansi-c/icons.gif/contents_motif.gif"></A> 
<A NAME="tex2html3548"
 HREF="node174.htm" tppabs="http://www.linux-kheops.com/doc/ansi-c/node174.htm">
<IMG WIDTH="59" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="index"
 SRC="index_motif.gif" tppabs="http://www.linux-kheops.com/doc/ansi-c/icons.gif/index_motif.gif"></A> 
<BR>
<B> Suivant:</B> <A NAME="tex2html3550"
 HREF="node155.htm" tppabs="http://www.linux-kheops.com/doc/ansi-c/node155.htm">R閒閞ences crois閑s de la</A>
<B> D閎ut:</B> <A NAME="tex2html3546"
 HREF="node140.htm" tppabs="http://www.linux-kheops.com/doc/ansi-c/node140.htm">La grammaire</A>
<B> Pr閏閐ent:</B> <A NAME="tex2html3540"
 HREF="node153.htm" tppabs="http://www.linux-kheops.com/doc/ansi-c/node153.htm">D閒initions externes</A><HR>
<BR>
<BR>
<!--End of Navigation Panel-->
<H1><font COLOR=#1809BB><A NAME="SECTION0016140000000000000000">
Directives du pr閜rocesseur</A>
</font></H1>
 R<SUB>107</SUB><I>fichier-du-pp</I>&nbsp;:
<BR>
    <IMG WIDTH="20" HEIGHT="14" ALIGN="BOTTOM" BORDER="0"
 SRC="img3.gif" tppabs="http://www.linux-kheops.com/doc/ansi-c/img3.gif"
 ALT="$\Rightarrow$">       <I>groupe<SUB><I>option</I></SUB></I>
<BR>
<BR>
R<SUB>108</SUB><I>groupe</I>&nbsp;:
<BR>
    <IMG WIDTH="20" HEIGHT="14" ALIGN="BOTTOM" BORDER="0"
 SRC="img3.gif" tppabs="http://www.linux-kheops.com/doc/ansi-c/img3.gif"
 ALT="$\Rightarrow$">       <I>partie-de-groupe</I>
<BR>
    <IMG WIDTH="20" HEIGHT="14" ALIGN="BOTTOM" BORDER="0"
 SRC="img3.gif" tppabs="http://www.linux-kheops.com/doc/ansi-c/img3.gif"
 ALT="$\Rightarrow$">       <I>groupe</I>
       <I>partie-de-groupe</I>
<BR>
<BR>
R<SUB>109</SUB><I>partie-de-groupe</I>&nbsp;:
<BR>
    <IMG WIDTH="20" HEIGHT="14" ALIGN="BOTTOM" BORDER="0"
 SRC="img3.gif" tppabs="http://www.linux-kheops.com/doc/ansi-c/img3.gif"
 ALT="$\Rightarrow$">       <I>liste-d-unit閟-lexicales-du-pp<SUB><I>option</I></SUB></I>
       <I>newline</I>
<BR>
    <IMG WIDTH="20" HEIGHT="14" ALIGN="BOTTOM" BORDER="0"
 SRC="img3.gif" tppabs="http://www.linux-kheops.com/doc/ansi-c/img3.gif"
 ALT="$\Rightarrow$">       <I>section-if</I>
<BR>
    <IMG WIDTH="20" HEIGHT="14" ALIGN="BOTTOM" BORDER="0"
 SRC="img3.gif" tppabs="http://www.linux-kheops.com/doc/ansi-c/img3.gif"
 ALT="$\Rightarrow$">       <I>ligne-directive</I>
<BR>
<BR>
R<SUB>110</SUB><I>section-if</I>&nbsp;:
<BR>
    <IMG WIDTH="20" HEIGHT="14" ALIGN="BOTTOM" BORDER="0"
 SRC="img3.gif" tppabs="http://www.linux-kheops.com/doc/ansi-c/img3.gif"
 ALT="$\Rightarrow$">       <I>groupe-if</I>
       <I>liste-de-groupes-elif<SUB><I>option</I></SUB></I>
       <I>groupe-else<SUB><I>option</I></SUB></I>
       <I>ligne-endif</I>
<BR>
<BR>
R<SUB>111</SUB><I>groupe-if</I>&nbsp;:
<BR>
    <IMG WIDTH="20" HEIGHT="14" ALIGN="BOTTOM" BORDER="0"
 SRC="img3.gif" tppabs="http://www.linux-kheops.com/doc/ansi-c/img3.gif"
 ALT="$\Rightarrow$">       <code>#  if</code>
       <I>expression-constante</I>
       <I>newline</I>
       <I>groupe<SUB><I>option</I></SUB></I>
<BR>
    <IMG WIDTH="20" HEIGHT="14" ALIGN="BOTTOM" BORDER="0"
 SRC="img3.gif" tppabs="http://www.linux-kheops.com/doc/ansi-c/img3.gif"
 ALT="$\Rightarrow$">       <code>#  ifdef</code>
       <I>identificateur</I>
       <I>newline</I>
       <I>groupe<SUB><I>option</I></SUB></I>
<BR>
    <IMG WIDTH="20" HEIGHT="14" ALIGN="BOTTOM" BORDER="0"
 SRC="img3.gif" tppabs="http://www.linux-kheops.com/doc/ansi-c/img3.gif"
 ALT="$\Rightarrow$">       <code>#  ifndef</code>
       <I>identificateur</I>
       <I>newline</I>
       <I>groupe<SUB><I>option</I></SUB></I>
<BR>
<BR>
R<SUB>112</SUB><I>liste-de-groupes-elif</I>&nbsp;:
<BR>
    <IMG WIDTH="20" HEIGHT="14" ALIGN="BOTTOM" BORDER="0"
 SRC="img3.gif" tppabs="http://www.linux-kheops.com/doc/ansi-c/img3.gif"
 ALT="$\Rightarrow$">       <I>groupe-elif</I>
<BR>
    <IMG WIDTH="20" HEIGHT="14" ALIGN="BOTTOM" BORDER="0"
 SRC="img3.gif" tppabs="http://www.linux-kheops.com/doc/ansi-c/img3.gif"
 ALT="$\Rightarrow$">       <I>liste-de-groupes-elif</I>
       <I>groupe-elif</I>
<BR>
<BR>
R<SUB>113</SUB><I>groupe-elif</I>&nbsp;:
<BR>
    <IMG WIDTH="20" HEIGHT="14" ALIGN="BOTTOM" BORDER="0"
 SRC="img3.gif" tppabs="http://www.linux-kheops.com/doc/ansi-c/img3.gif"
 ALT="$\Rightarrow$">       <code>#  elif</code>
       <I>expression-constante</I>
       <I>newline</I>
       <I>groupe<SUB><I>option</I></SUB></I>
<BR>
<BR>
R<SUB>114</SUB><I>groupe-else</I>&nbsp;:
<BR>
    <IMG WIDTH="20" HEIGHT="14" ALIGN="BOTTOM" BORDER="0"
 SRC="img3.gif" tppabs="http://www.linux-kheops.com/doc/ansi-c/img3.gif"
 ALT="$\Rightarrow$">       <code>#  else</code>
       <I>newline</I>
       <I>groupe<SUB><I>option</I></SUB></I>
<BR>
<BR>
R<SUB>115</SUB><I>ligne-endif</I>&nbsp;:
<BR>
    <IMG WIDTH="20" HEIGHT="14" ALIGN="BOTTOM" BORDER="0"
 SRC="img3.gif" tppabs="http://www.linux-kheops.com/doc/ansi-c/img3.gif"
 ALT="$\Rightarrow$">       <code>#  endif</code>
       <I>newline</I>
<BR>
<BR>
R<SUB>116</SUB><I>ligne-directive</I>&nbsp;:
<BR>
    <IMG WIDTH="20" HEIGHT="14" ALIGN="BOTTOM" BORDER="0"
 SRC="img3.gif" tppabs="http://www.linux-kheops.com/doc/ansi-c/img3.gif"
 ALT="$\Rightarrow$">       <code>#  include</code>
       <I>liste-d-unit閟-lexicales-du-pp</I>
       <I>newline</I>
<BR>
    <IMG WIDTH="20" HEIGHT="14" ALIGN="BOTTOM" BORDER="0"
 SRC="img3.gif" tppabs="http://www.linux-kheops.com/doc/ansi-c/img3.gif"
 ALT="$\Rightarrow$">       <code>#  define</code>
       <I>identificateur</I>
       <I>remplacement</I>
       <I>newline</I>
<BR>
    <IMG WIDTH="20" HEIGHT="14" ALIGN="BOTTOM" BORDER="0"
 SRC="img3.gif" tppabs="http://www.linux-kheops.com/doc/ansi-c/img3.gif"
 ALT="$\Rightarrow$">       <code>#  define</code>
       <I>identificateur</I>
       <I>parenth鑣e-g</I>
       <I>liste-d-identificateurs<SUB><I>option</I></SUB></I>
<BR>
       <I>remplacement</I>
       <I>newline</I>
<BR>
    <IMG WIDTH="20" HEIGHT="14" ALIGN="BOTTOM" BORDER="0"
 SRC="img3.gif" tppabs="http://www.linux-kheops.com/doc/ansi-c/img3.gif"
 ALT="$\Rightarrow$">       <code>#  undef</code>
       <I>identificateur</I>
       <I>newline</I>
<BR>
    <IMG WIDTH="20" HEIGHT="14" ALIGN="BOTTOM" BORDER="0"
 SRC="img3.gif" tppabs="http://www.linux-kheops.com/doc/ansi-c/img3.gif"
 ALT="$\Rightarrow$">       <code>#  line</code>
       <I>liste-d-unit閟-lexicales-du-pp</I>
       <I>newline</I>
<BR>
    <IMG WIDTH="20" HEIGHT="14" ALIGN="BOTTOM" BORDER="0"
 SRC="img3.gif" tppabs="http://www.linux-kheops.com/doc/ansi-c/img3.gif"
 ALT="$\Rightarrow$">       <code>#  error</code>
       <I>liste-d-unit閟-lexicales-du-pp<SUB><I>option</I></SUB></I>
       <I>newline</I>
<BR>
    <IMG WIDTH="20" HEIGHT="14" ALIGN="BOTTOM" BORDER="0"
 SRC="img3.gif" tppabs="http://www.linux-kheops.com/doc/ansi-c/img3.gif"
 ALT="$\Rightarrow$">       <code>#  pragma</code>
       <I>liste-d-unit閟-lexicales-du-pp<SUB><I>option</I></SUB></I>
       <I>newline</I>
<BR>
    <IMG WIDTH="20" HEIGHT="14" ALIGN="BOTTOM" BORDER="0"
 SRC="img3.gif" tppabs="http://www.linux-kheops.com/doc/ansi-c/img3.gif"
 ALT="$\Rightarrow$">       <code>#</code>
       <I>newline</I>
<BR>
<BR>
R<SUB>117</SUB><I>parenth鑣e-g</I>&nbsp;:
<BR>
    <IMG WIDTH="20" HEIGHT="14" ALIGN="BOTTOM" BORDER="0"
 SRC="img3.gif" tppabs="http://www.linux-kheops.com/doc/ansi-c/img3.gif"
 ALT="$\Rightarrow$">       le caract鑢e <code>(</code> non pr閏閐

⌨️ 快捷键说明

复制代码 Ctrl + C
搜索代码 Ctrl + F
全屏模式 F11
切换主题 Ctrl + Shift + D
显示快捷键 ?
增大字号 Ctrl + =
减小字号 Ctrl + -