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<h3 class="section">1.3 Using the Library</h3>

<p>This section describes some of the practical issues involved in using
the GNU C library.

<ul class="menu">
<li><a accesskey="1" href="Header-Files.html#Header-Files">Header Files</a>:                 How to include the header files in your
                                 programs. 
<li><a accesskey="2" href="Macro-Definitions.html#Macro-Definitions">Macro Definitions</a>:            Some functions in the library may really
                                 be implemented as macros. 
<li><a accesskey="3" href="Reserved-Names.html#Reserved-Names">Reserved Names</a>:               The C standard reserves some names for
                                 the library, and some for users. 
<li><a accesskey="4" href="Feature-Test-Macros.html#Feature-Test-Macros">Feature Test Macros</a>:          How to control what names are defined. 
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