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...

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 …

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 …

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 …

Apr 28, 2023 · 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.

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?

Which preprocessor define should be used to specify debug sections of code? Use #ifdef _DEBUG or #ifndef NDEBUG or is there a better way to do it, e.g. #define MY_DEBUG? I …

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 …