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| 22 | <title>Lexical Syntax (GNU C Language Manual)</title>
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| 58 | <span id="Lexical-Syntax"></span><div class="header">
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| 59 | <p>
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| 60 | Next: <a href="Arithmetic.html" accesskey="n" rel="next">Arithmetic</a>, Previous: <a href="Beyond-Integers.html" accesskey="p" rel="prev">Beyond Integers</a>, Up: <a href="index.html" accesskey="u" rel="up">Top</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Symbol-Index.html" title="Index" rel="index">Index</a>]</p>
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| 61 | </div>
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| 62 | <hr>
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| 63 | <span id="Lexical-Syntax-1"></span><h2 class="chapter">5 Lexical Syntax</h2>
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| 64 | <span id="index-lexical-syntax"></span>
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| 65 | <span id="index-token"></span>
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| 66 |
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| 67 | <p>To start the full description of the C language, we explain the
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| 68 | lexical syntax and lexical units of C code. The lexical units of a
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| 69 | programming language are known as <em>tokens</em>. This chapter covers
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| 70 | all the tokens of C except for constants, which are covered in a later
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| 71 | chapter (see <a href="Constants.html">Constants</a>). One vital kind of token is the
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| 72 | <em>identifier</em> (see <a href="Identifiers.html">Identifiers</a>), which is used for names of any
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| 73 | kind.
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| 74 | </p>
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| 75 | <table class="menu" border="0" cellspacing="0">
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| 76 | <tr><td align="left" valign="top">• <a href="English.html" accesskey="1">English</a></td><td> </td><td align="left" valign="top">Write programs in English!
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| 77 | </td></tr>
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| 78 | <tr><td align="left" valign="top">• <a href="Characters.html" accesskey="2">Characters</a></td><td> </td><td align="left" valign="top">The characters allowed in C programs.
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| 79 | </td></tr>
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| 80 | <tr><td align="left" valign="top">• <a href="Whitespace.html" accesskey="3">Whitespace</a></td><td> </td><td align="left" valign="top">The particulars of whitespace characters.
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| 81 | </td></tr>
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| 82 | <tr><td align="left" valign="top">• <a href="Comments.html" accesskey="4">Comments</a></td><td> </td><td align="left" valign="top">How to include comments in C code.
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| 83 | </td></tr>
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| 84 | <tr><td align="left" valign="top">• <a href="Identifiers.html" accesskey="5">Identifiers</a></td><td> </td><td align="left" valign="top">How to form identifiers (names).
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| 85 | </td></tr>
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| 86 | <tr><td align="left" valign="top">• <a href="Operators_002fPunctuation.html" accesskey="6">Operators/Punctuation</a></td><td> </td><td align="left" valign="top">Characters used as operators or punctuation.
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| 87 | </td></tr>
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| 88 | <tr><td align="left" valign="top">• <a href="Line-Continuation.html" accesskey="7">Line Continuation</a></td><td> </td><td align="left" valign="top">Splitting one line into multiple lines.
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| 89 | </td></tr>
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