### Preprocessor Macro Operators

This page lists and briefly describes preprocessor macro operators available to you. To get more information on any item listed here, go to the reference page for that item.

Preprocessor Macro Operators
Name | Action
--- | ---
# | Converts a parameter of a function-like macro into a character string literal.
## | Concatenates two tokens in a macro, ignoring white space between macro tokens and operators.
/**/ | Concatenates two tokens in a macro, preserving white space between macro tokens and operators.

Preprocessor Directives

#define Preprocessor Directive
List of Preprocessor Directives