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 …

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.

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 …

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?

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 …

How do I define a function with optional arguments? Asked 13 years, 3 months ago Modified 11 months ago Viewed 1.2m times

The difference is that #define is processed by the preprocessor doing what amounts to simple text replacement. Const values defined like this are not visible for the actual compiler, while a …

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 …

Jul 29, 2009 · You can either use array declaration or array literal (but only when you declare and affect the variable right away, array literals cannot be used for re-assigning an array). For …

Apr 13, 2011 · There are two types of variable in SQL-plus: substitution and bind. This is substitution (substitution variables can replace SQL*Plus command options or other hard …