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<TITLE>The Standard Exception Hierarchy</TITLE>
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<H2>18.2 The Standard Exception Hierarchy</H2>
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<P>The C++ Standard Library implements the two-category error model described in <A HREF="18-1.html">Section&nbsp;18.1</A> with a set of classes. These classes, which are defined in the <SAMP>stdexcept</SAMP> header file, can be used to catch exceptions thrown by the library and to throw exceptions from your own code.</P>
<P>The exception handling classes are related through inheritance. The inheritance hierarchy looks like this:</P>

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<UL><PRE><B><I><A HREF="../stdlibref/exception.html">exception</A></I></B>
   <B><I><A HREF="../stdlibref/logic-error.html">logic_error</A></I></B>
      <B><I><A HREF="../stdlibref/domain-error.html">domain_error</A></I></B>
      <B><I><A HREF="../stdlibref/invalid-argument.html">invalid_argument</A></I></B>
      <B><I><A HREF="../stdlibref/length-error.html">length_error</A></I></B>
      <B><I><A HREF="../stdlibref/out-of-range.html">out_of_range</A></I></B>
   <B><I><A HREF="../stdlibref/runtime-error.html">runtime_error</A></I></B>
      <B><I><A HREF="../stdlibref/range-error.html">range_error</A></I></B>
      <B><I><A HREF="../stdlibref/overflow-error.html">overflow_error</A></I></B> 
      <B><I><A HREF="../stdlibref/underflow-error.html">underflow_error</A></I></B> 
</PRE></UL>
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<P>Classes <B><I><A HREF="../stdlibref/logic-error.html">logic_error</A></I></B> and <B><I><A HREF="../stdlibref/runtime-error.html">runtime_error</A></I></B> inherit from class <B><I><A HREF="../stdlibref/exception.html">exception</A></I></B>. All other exception handling classes inherit from either <B><I>logic_error</I></B> or <B><I>runtime_error</I></B>.</P>

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