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<html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>Chapter 4. Types</title><meta name="generator" content="DocBook XSL Stylesheets V1.75.2" /><meta name="keywords" content=" ISO C++ , library " /><link rel="home" href="../spine.html" title="The GNU C++ Library Documentation" /><link rel="up" href="support.html" title="Part II. Support" /><link rel="prev" href="bk01pt02pr01.html" title="" /><link rel="next" href="bk01pt02ch04s02.html" title="Numeric Properties" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Chapter 4. Types</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="bk01pt02pr01.html">Prev</a> </td><th width="60%" align="center">Part II.
Support
</th><td width="20%" align="right"> <a accesskey="n" href="bk01pt02ch04s02.html">Next</a></td></tr></table><hr /></div><div class="chapter" title="Chapter 4. Types"><div class="titlepage"><div><div><h2 class="title"><a id="manual.support.types"></a>Chapter 4. Types</h2></div></div></div><div class="toc"><p><b>Table of Contents</b></p><dl><dt><span class="sect1"><a href="fundamental_types.html#manual.support.types.fundamental">Fundamental Types</a></span></dt><dt><span class="sect1"><a href="bk01pt02ch04s02.html">Numeric Properties</a></span></dt><dt><span class="sect1"><a href="bk01pt02ch04s03.html">NULL</a></span></dt></dl></div><div class="sect1" title="Fundamental Types"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="manual.support.types.fundamental"></a>Fundamental Types</h2></div></div></div><p>
C++ has the following builtin types:
</p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p>
char
</p></li><li class="listitem"><p>
signed char
</p></li><li class="listitem"><p>
unsigned char
</p></li><li class="listitem"><p>
signed short
</p></li><li class="listitem"><p>
signed int
</p></li><li class="listitem"><p>
signed long
</p></li><li class="listitem"><p>
unsigned short
</p></li><li class="listitem"><p>
unsigned int
</p></li><li class="listitem"><p>
unsigned long
</p></li><li class="listitem"><p>
bool
</p></li><li class="listitem"><p>
wchar_t
</p></li><li class="listitem"><p>
float
</p></li><li class="listitem"><p>
double
</p></li><li class="listitem"><p>
long double
</p></li></ul></div><p>
These fundamental types are always available, without having to
include a header file. These types are exactly the same in
either C++ or in C.
</p><p>
Specializing parts of the library on these types is prohibited:
instead, use a POD.
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