=====#line=====

Syntax:
<code>
    #line line_number "filename"
</code>

The #line command is simply used to change the value of the ''%%__LINE__%%'' and
''%%__FILE__%%'' variables. The filename is optional. The ''%%__LINE__%%'' and ''%%__FILE__%%''
variables represent the current file and which line is being read. The command
<code>
     #line 10 "main.cpp"
</code>

...changes the current line number to 10, and the current file to "main.cpp".