What is #define directive?

Last updated on June 13th, 2020 at 08:26 pm

#define directive:
  1. A #define is a preprocessor compiler directive and not a statement.
  2. #define should not end with a semicolon.
  3. Symbolic constants are generally written in uppercase so that they can be easily distinguished from the lowercase variable names.
  4. #define instructions are usually placed at the beginning before the main() function.

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