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We will study this part of the compilation process in greater detail later
(Chapter 
. However we need some basic information for some C
programs.
The Preprocessor accepts source code as input and is responsible for
- removing comments
- interpreting special preprocessor directives denoted by #.
For example
- #include - includes contents of a named file. Files
usually called header files. e.g
- #include <math.h> - standard library maths file.
- #include <stdio.h> - standard library I/O file
- #define - defines a symbolic name or constant. Macro
substitution.
- #define MAX_ARRAY_SIZE100