7.8 C/C++ Code Error Directive
When using a #error
directive in code, it is best to enclose the
statement in parentheses, as in:
(#error This line shown only when there is an error.)
Otherwise, the syntax parser honors the #error
directive in the same
manner as a C compiler and stops in its tracks. Therefore the text immediately following
the directive will be grayed in the Editor to signify this.