Define Martinez

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

May 10, 20100 in c or c++ #define allows you to create preprocessor 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: The question is if users can define new macros in a macro, not if they can use macros in macros. Aug 24, 2010macros (created with #define) are always replaced as written, and can have double-evaluation problems.

Jun 18, 2012#define width 10 is a preprocessor directive that allows you to specify a name (width) and its replacement text (10).