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- <h2 class="sectionedit1"><a name="preprocessor_commands" id="preprocessor_commands">Preprocessor Commands</a></h2>
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- The C++ preprocessor runs before any other compilation happens. Commands given to the preprocessor allow the programmer to define variables, perform text substitution, and test simple conditions.
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- <td class="col0"><a href="sharp" class="wikilink1" title="preprocessor:sharp"># and ##</a></td><td class="col1">manipulate strings</td>
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- <td class="col0"><a href="define" class="wikilink1" title="preprocessor:define">#define</a></td><td class="col1">define macrodefinition</td>
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- <td class="col0"><a href="error" class="wikilink1" title="preprocessor:error">#error</a></td><td class="col1">display an error message</td>
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- <td class="col0"><a href="preprocessor_if" class="wikilink1" title="preprocessor:preprocessor_if">#if, #ifdef, #ifndef, #else, #elif, and #endif</a></td><td class="col1">conditional operators</td>
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- <td class="col0"><a href="include" class="wikilink1" title="preprocessor:include">#include</a></td><td class="col1">insert the contents of another file</td>
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- <td class="col0"><a href="line" class="wikilink1" title="preprocessor:line">#line</a></td><td class="col1">set line and file information</td>
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- <td class="col0"><a href="pragma" class="wikilink1" title="preprocessor:pragma">#pragma</a></td><td class="col1">implementation specific command</td>
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- <td class="col0"><a href="undef" class="wikilink1" title="preprocessor:undef">#undef</a></td><td class="col1">used to undefine macrodefinitions</td>
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- <td class="col0"><a href="warning" class="wikilink1" title="preprocessor:warning">#warning</a></td><td class="col1">display a warning message</td>
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- <td class="col0"><a href="preprocessor_vars" class="wikilink1" title="preprocessor:preprocessor_vars">Predefined preprocessor variables</a></td><td class="col1">miscellaneous preprocessor variables</td>
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