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<a name="Traditional-macros_002c-varargs_002eh"></a>
<h3 class="section">14.2 Traditional macros, <samp>varargs.h</samp></h3>

<p>If your C compiler predates ANSI C, you may still be able to use
variable argument lists using the macros from the <samp>varargs.h</samp>
header file.  These macros resemble their ANSI counterparts, but have
important differences in usage.   In particular, since traditional C has
no declaration mechanism for variable argument lists, two additional
macros are provided simply for the purpose of defining functions with
variable argument lists.  
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<p>As with <samp>stdarg.h</samp>, the type <code>va_list</code> is used to hold a data
structure representing a variable argument list.
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