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.
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 code related to …
How can I use #if inside #define in the C preprocessor?
How can I use #if inside #define in the C preprocessor? Asked 15 years, 9 months ago Modified 10 months ago Viewed 52k times
c++ - Preprocessor directives - Stack Overflow
Jun 19, 2016 · Preprocessor directives, such as #define and #ifdef, are typically used to make source programs easy to change and easy to compile in different execution environments. Directives in the …
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...
c - Difference between macro and preprocessor - Stack Overflow
Aug 14, 2012 · Preprocessor directives are like commands to the preprocessor program.Some common preprocessor directives in C are #include <header name> - Instructs the preprocessor to paste the …
Define a preprocessor macro through CMake - Stack Overflow
Jan 24, 2024 · How do I define a preprocessor variable through CMake? The equivalent code would be #define foo.
C++ preprocessor __VA_ARGS__ number of arguments
I am okay with boost preprocessor, if it has the solution. If it makes a difference, I am trying to convert variable number of macro arguments to boost preprocessor sequence, list, or array for further …
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?
Difference between preprocessor directive #if and normal if
Mar 3, 2011 · The preprocessor if is handled by the preprocessor as the first step in the program being compiled. The normal if is handled at runtime when the program is executed. The preprocessor …