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 define constants in Visual C# like #define in C?
In C you can define constants like this #define NUMBER 9 so that wherever NUMBER appears in the program it is replaced with 9. But Visual C# doesn't do this. How is it done?
How do I show the value of a #define at compile-time?
I know that this is a long time after the original query, but this may still be useful. This can be done in GCC using the stringify operator "#", but it requires two additional stages to be defined first. …
#define macro for debug printing in C? - Stack Overflow
#ifdef DEBUG #define DEBUG_TEST 1 #else #define DEBUG_TEST 0 #endif And then use DEBUG_TEST where I used DEBUG. If you insist on a string literal for the format string …
constants - PHP | define () vs. const - Stack Overflow
The fundamental difference between those two ways is that const defines constants at compile time, whereas define defines them at run time. This causes most of const 's disadvantages. …
Why are #ifndef and #define used in C++ header files?
I have been seeing code like this usually in the start of header files: #ifndef HEADERFILE_H #define HEADERFILE_H And at the end of the file is #endif What is the purpose of this?
Array format for #define (C preprocessor) - Stack Overflow
Array format for #define (C preprocessor) Asked 13 years, 1 month ago Modified 4 years, 8 months ago Viewed 97k times
What is define([ , function ]) in JavaScript? - Stack Overflow
What is define ( [ , function ]) in JavaScript? [duplicate] Asked 12 years, 6 months ago Modified 2 years, 11 months ago Viewed 241k times
How do I define a function with optional arguments?
How do I define a function with optional arguments? Asked 13 years, 9 months ago Modified 1 year, 5 months ago Viewed 1.2m times
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 …