Define Standardized Error Response Format

In other words, when the compiler starts building your code, no #define statements or anything like that is left. Or #define var 5 or enum { var = 5 }; How can i use #if inside #define in the c preprocessor?

May 10, 20100 in c or c++ #define allows you to create preprocessor macros. The question is if users can define new macros in a macro, not if they can use macros in macros. May 14, 2011what is the point of #define in c++?

Mar 4, 2017#define simply substitutes a name with its value. Furthermore, a #define 'd constant may be used in the preprocessor: For example, never define a macro like this:

#define danger 60 + 2 this can potentially be dangerous when we do an operation like this: Aug 24, 20102 macros (created with #define) are always replaced as written, and can have double-evaluation problems.