define gav - Fashion Magic
What is the point of #define in C++? I've only seen examples where it's used in place of a "magic number" but I don't see the point in just giving that value to a variable instead. c++ - Why use #define instead of a variable - Stack Overflow In other words, when the compiler starts building your code, no #define statements or anything like that is left.
Understanding the Context
A good way to understand what the preprocessor does to your code is to get hold of the preprocessed output and look at it. c++ - What does ## in a #define mean? - Stack Overflow The question is if users can define new macros in a macro, not if they can use macros in macros. Macros (created with #define) are always replaced as written, and can have double-evaluation problems.
Image Gallery
Key Insights
inline on the other hand, is purely advisory - the compiler is free to ignore it. Under the C99 standard, an inline function can also have external linkage, creating a function definition which can be linked against. Is it better to use static const variables than #define preprocessor? Or does it maybe depend on the context? What are advantages/disadvantages for each method?
Related Articles You Might Like:
what to wear for black tie event women love me forever by appointment only bateau neckline wedding dressesFinal Thoughts
#define WIDTH 10 is a preprocessor directive that allows you to specify a name (WIDTH) and its replacement text (10). The preprocessor parses the source file and each occurrence of the name is replaced by its associated text. The compiler never actually sees a macro name at all, what it sees is the replaced text.