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84 lines
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84 lines
3.6 KiB
HTML
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Next: <a href="Varargs.html#Varargs" accesskey="n" rel="next">Varargs</a>, Up: <a href="Arglists.html#Arglists" accesskey="u" rel="up">Arglists</a> [<a href="Document-Index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Document-Index.html#Document-Index" title="Index" rel="index">Index</a>]</p>
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<a name="ANSI_002dstandard-macros_002c-stdarg_002eh"></a>
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<h3 class="section">14.1 ANSI-standard macros, <samp>stdarg.h</samp></h3>
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<p>In ANSI C, a function has a variable number of arguments when its
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parameter list ends in an ellipsis (<code>...</code>). The parameter list
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must also include at least one explicitly named argument; that argument
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is used to initialize the variable list data structure.
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</p>
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<p>ANSI C defines three macros (<code>va_start</code>, <code>va_arg</code>, and
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<code>va_end</code>) to operate on variable argument lists. <samp>stdarg.h</samp>
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also defines a special type to represent variable argument lists: this
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type is called <code>va_list</code>.
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<tr><td align="left" valign="top">• <a href="va_005farg.html#va_005farg" accesskey="2">va_arg</a>:</td><td> </td><td align="left" valign="top">
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<tr><td align="left" valign="top">• <a href="va_005fend.html#va_005fend" accesskey="3">va_end</a>:</td><td> </td><td align="left" valign="top">
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