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 …

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...

The preprocessor cannot use variables from the C program in expressions - it can only act on preprocessor macros. So when you try to use c in the preprocessor you don't get what you …

How can I use #if inside #define in the C preprocessor? Asked 15 years, 6 months ago Modified 8 months ago Viewed 51k times

C preprocessor directives/macros are just another form of "meta-programming", albeit a relatively cruder form than is available in other languages. Preprocessor directives instruct the compiler …

Nov 10, 2008 · Let's say I have a source file with many preprocessor directives. Is it possible to see how it looks after the preprocessor is done with it?

So, if the tested macro and the value macros are defined as lists of character values, then they can be compared directly in a preprocessor #if conditional - and in order to print such macros …

Sep 18, 2010 · How do I view the output produced by the C pre-processor, prior to its conversion into an object file? I want to see what the MACRO definitions do to my code.

The preprocessor is dumb and doesn't understand C++ syntax or semantics. Macros ignore scopes such as namespaces, classes or function blocks, so you can't use a name for anything …