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92 lines
3.9 KiB
HTML
92 lines
3.9 KiB
HTML
4 years ago
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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
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<html>
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<!-- This file documents the GNU Assembler "as".
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Copyright (C) 1991-2019 Free Software Foundation, Inc.
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Permission is granted to copy, distribute and/or modify this document
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under the terms of the GNU Free Documentation License, Version 1.3
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or any later version published by the Free Software Foundation;
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with no Invariant Sections, with no Front-Cover Texts, and with no
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Back-Cover Texts. A copy of the license is included in the
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section entitled "GNU Free Documentation License".
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-->
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<!-- Created by GNU Texinfo 6.4, http://www.gnu.org/software/texinfo/ -->
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<head>
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<title>Chars (Using as)</title>
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<meta name="description" content="Chars (Using as)">
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<meta name="keywords" content="Chars (Using as)">
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<meta name="resource-type" content="document">
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<meta name="distribution" content="global">
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<meta name="Generator" content="makeinfo">
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
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<link href="index.html#Top" rel="start" title="Top">
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<link href="AS-Index.html#AS-Index" rel="index" title="AS Index">
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<link href="index.html#SEC_Contents" rel="contents" title="Table of Contents">
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<link href="Characters.html#Characters" rel="up" title="Characters">
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<link href="Numbers.html#Numbers" rel="next" title="Numbers">
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<link href="Strings.html#Strings" rel="prev" title="Strings">
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<style type="text/css">
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<!--
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a.summary-letter {text-decoration: none}
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blockquote.indentedblock {margin-right: 0em}
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blockquote.smallquotation {font-size: smaller}
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div.display {margin-left: 3.2em}
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div.example {margin-left: 3.2em}
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div.smalldisplay {margin-left: 3.2em}
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div.smalllisp {margin-left: 3.2em}
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kbd {font-style: oblique}
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pre.display {font-family: inherit}
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pre.format {font-family: inherit}
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pre.menu-comment {font-family: serif}
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pre.menu-preformatted {font-family: serif}
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pre.smalldisplay {font-family: inherit; font-size: smaller}
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pre.smallexample {font-size: smaller}
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pre.smalllisp {font-size: smaller}
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span.nolinebreak {white-space: nowrap}
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span.roman {font-family: initial; font-weight: normal}
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span.sansserif {font-family: sans-serif; font-weight: normal}
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ul.no-bullet {list-style: none}
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-->
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</style>
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</head>
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<body lang="en">
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<a name="Chars"></a>
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<div class="header">
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<p>
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Previous: <a href="Strings.html#Strings" accesskey="p" rel="prev">Strings</a>, Up: <a href="Characters.html#Characters" accesskey="u" rel="up">Characters</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="AS-Index.html#AS-Index" title="Index" rel="index">Index</a>]</p>
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</div>
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<hr>
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<a name="Characters-1"></a>
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<h4 class="subsubsection">3.6.1.2 Characters</h4>
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<a name="index-single-character-constant"></a>
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<a name="index-character_002c-single"></a>
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<a name="index-constant_002c-single-character"></a>
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<p>A single character may be written as a single quote immediately followed by
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that character. Some backslash escapes apply to characters, <code>\b</code>,
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<code>\f</code>, <code>\n</code>, <code>\r</code>, <code>\t</code>, and <code>\"</code> with the same meaning
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as for strings, plus <code>\'</code> for a single quote. So if you want to write the
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character backslash, you must write <kbd>'\\</kbd> where the first <code>\</code> escapes
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the second <code>\</code>. As you can see, the quote is an acute accent, not a grave
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accent. A newline
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immediately following an acute accent is taken as a literal character
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and does not count as the end of a statement. The value of a character
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constant in a numeric expression is the machine’s byte-wide code for
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that character. <code>as</code> assumes your character code is ASCII:
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<kbd>'A</kbd> means 65, <kbd>'B</kbd> means 66, and so on.
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</p>
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</body>
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</html>
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