Feb 20, 2016 · 6 because ## is a token concatenation operator for the c preprocessor. Or maybe I don't understand the question.

FYI, identifiers/names, including preprocessor symbols, beginning with an underscore followed by a capital letter (or beginning with two underscores) are reserved to the implementation by the …

May 10, 2015 · C# preprocessor differentiate between operating systems Asked 10 years, 5 months ago Modified 12 months ago Viewed 18k times

The preprocessor is run on the text, before any compilation is done. It doesn't know how to parse C. What you probably wanted instead of int c=1; was #define C 1 and the test works the way …

In my project, the program can do one thing of two, but never both, so I decided that the best I can do for one class is to define it depending of a #define preprocessor variable. The following cod...

Mar 14, 2016 · A preprocessor is an "engine" executed before the compiler compiles code. #define #include are preprocessor directives or macros, so the preprocessor engine executes …

Jun 18, 2013 · Since the macro is not declared, the preprocessor treats it as if it equals 0, and the #if statement never runs. When the header file is forgotten to be included, non-expected, …

Jan 26, 2012 · How do I define a preprocessor variable through CMake? The equivalent code would be #define foo.

-1 I've wanted to use string comparison as well in preprocessor macros, mostly so I can also "print" these values during preprocessing step (using pragma message). As mentioned in …

Apr 2, 2016 · 4 Preporcessor: the program that does the preprocessing (file inclusion, macro expansion, conditional compilation). Macro: a word defined by the #define preprocessor …