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<h2 class="sectionedit1"><a name="line" id="line">#line</a></h2>
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<p>

Syntax:

</p>
<pre class="cpp code cpp">    <span class="co2">#line line_number &quot;filename&quot;</span></pre>
<p>
The #line command is simply used to change the value of the <code>__LINE__</code> and
<code>__FILE__</code> variables. The filename is optional. The <code>__LINE__</code> and <code>__FILE__</code>
variables represent the current file and which line is being read. The command

</p>
<pre class="cpp code cpp">     <span class="co2">#line 10 &quot;main.cpp&quot;</span></pre>
<p>
…changes the current line number to 10, and the current file to “main.cpp”.
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