How can I use "else if" with the preprocessor #ifdef?
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...
What does ## mean for the C(C++) preprocessor? - Stack Overflow
Feb 20, 2016 · 6 because ## is a token concatenation operator for the c preprocessor. Or maybe I don't understand the question.
Can Boolean operators be used with the preprocessor?
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 …
How do I generate an error or warning in the C preprocessor?
Feb 8, 2010 · I have a program that must be compiled only in DEBUG mode. (testing purpose) How can I have the preprocessor prevent compilation in RELEASE mode?
Define a preprocessor macro through CMake - Stack Overflow
Jan 26, 2012 · How do I define a preprocessor variable through CMake? The equivalent code would be #define foo.
How do you indent preprocessor statements? - Stack Overflow
Mar 16, 2017 · When I consider also indenting those preprocessor statements, I fear of getting confused with the general indentation level. So how do you solve this in a beautiful way?
gcc - How to view C preprocessor output? - Stack Overflow
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.
C preprocessor #if expression - Stack Overflow
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 …
What does preprocessing exactly mean in compiler
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 …
Why should one bother with preprocessor directives?
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 …