Define Strategy Interface

Jul 2, 20242 what's happening when you define something without giving a definition? Every valid #define directive associates a macro name with a corresponding replacement list (a "definition", in. May 14, 2011what is the point of #define in c++?

How can i use #if inside #define in the c preprocessor? The question is if users can define new macros in a macro, not if they can use macros in macros. Or #define var 5 or enum { var = 5 };

In other words, when the compiler starts building your code, no #define statements or anything like that is left. Aug 24, 2010macros (created with #define) are always replaced as written, and can have double-evaluation problems. The #define directive is a preprocessor directive;

Mar 4, 2017#define simply substitutes a name with its value. Furthermore, a #define 'd constant may be used in the preprocessor: