Is it possible to use a if statement inside #define?
As far as I know, what you're trying to do (use if statement and then return a value from a macro) isn't possible in ISO C... but it is somewhat possible with statement expressions (GNU …
What is the difference between #define and const? [duplicate]
The #define directive is a preprocessor directive; the preprocessor replaces those macros by their body before the compiler even sees it. Think of it as an automatic search and replace of your …
How to declare variable and use it in the same Oracle SQL script?
I want to write reusable code and need to declare some variables at the beginning and reuse them in the script, such as: DEFINE stupidvar = 'stupidvarcontent'; SELECT stupiddata FROM …
How do I define a function with optional arguments?
How do I define a function with optional arguments? Asked 13 years, 8 months ago Modified 1 year, 4 months ago Viewed 1.2m times
c# - How do you use #define? - Stack Overflow
Oct 30, 2013 · 8 #define is used to define compile-time constants that you can use with #if to include or exclude bits of code.
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 …
How do I declare a global variable in VBA? - Stack Overflow
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What is the purpose of the #define directive in C++?
May 10, 2010 · 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 …
error Please #define _AFXDLL or do not use /MD [d] occurs even …
Jul 30, 2014 · Check what Michael said: in the build log, is there a _AFXDLL? Do not define it manually, it is added when you set "Use MFC in a shared DLL". If it is set there, this sounds …
Why do most C developers use define instead of const?
Mar 4, 2017 · #define simply substitutes a name with its value. Furthermore, a #define 'd constant may be used in the preprocessor: you can use it with #ifdef to do conditional compilation …