Directives to the Preprocessor
For the latest documentation on Visual Studio 2017 RC, see Visual Studio 2017 RC Documentation.
A "directive" instructs the C preprocessor to perform a specific action on the text of the program before compilation. Preprocessor directives are fully described in the Preprocessor Reference. This example uses the preprocessor directive
#define MAX 100
This statement tells the compiler to replace each occurrence of
100 before compilation. The C compiler preprocessor directives are: