What is the purpose of the #define directive in C++?
Nov 27, 2015 · 0 in C or C++ #define allows you to create preprocessor Macros. In the normal C or C++ build process the first thing that happens is that the PreProcessor runs, the …
Is it possible to use a if statement inside #define?
It is possible to use anything in #define - you just need to be careful about the preprocessor. See @Saeed's answer below.
Why use #define instead of a variable - Stack Overflow
Mar 28, 2018 · 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++ - 'static const' vs. '#define' - Stack Overflow
Oct 28, 2009 · 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?
c++ - What does ## in a #define mean? - Stack Overflow
In other words, when the compiler starts building your code, no #define statements or anything like that is left. A good way to understand what the preprocessor does to your code is to get …
What's the difference in practice between inline and #define?
Aug 24, 2010 · 2 Macros (created with #define) are always replaced as written, and can have double-evaluation problems. inline on the other hand, is purely advisory - the compiler is free …
How do I define a function with optional arguments?
How do I define a function with optional arguments? Asked 13 years, 3 months ago Modified 11 months ago Viewed 1.2m times
c# - How do you use #define? - Stack Overflow
Aug 19, 2008 · The main use-case for #define is for conditional compilation (where it can be very useful). You're correct that using #define for symbols and (please don't do it) macros, is not a …
Array format for #define (C preprocessor) - Stack Overflow
Probably a naïve question - I used to program 20 years ago and haven't coded much since. My memory of how the C preprocessor works has atrophied significantly since then... I am writing …
c# - Define #define, including some examples - Stack Overflow
1 #define is a special "before compile" directive in C# (it derives from the old C preprocessor directives) that defines a preprocessor symbol. Coupled with #if, depending on what symbols …