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<h3 class="section">3.7 Predefined Macros</h3>

<p><a name="index-predefined-macros-59"></a>Several object-like macros are predefined; you use them without
supplying their definitions.  They fall into three classes: standard,
common, and system-specific.

   <p>In C++, there is a fourth category, the named operators.  They act like
predefined macros, but you cannot undefine them.

<ul class="menu">
<li><a accesskey="1" href="Standard-Predefined-Macros.html#Standard-Predefined-Macros">Standard Predefined Macros</a>
<li><a accesskey="2" href="Common-Predefined-Macros.html#Common-Predefined-Macros">Common Predefined Macros</a>
<li><a accesskey="3" href="System_002dspecific-Predefined-Macros.html#System_002dspecific-Predefined-Macros">System-specific Predefined Macros</a>
<li><a accesskey="4" href="C_002b_002b-Named-Operators.html#C_002b_002b-Named-Operators">C++ Named Operators</a>
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