Preprocessor Operators

Visual Studio 2005

Four preprocessor-specific operators are used in the context of the #define directive (see the following list for a summary of each). The stringizing, charizing, and token-pasting operators are discussed in the next three sections. For information on the defined operator, see The #if, #elif, #else, and #endif Directives.

Operator Action

Causes the corresponding actual argument to be enclosed in double quotation marks

Causes the corresponding argument to be enclosed in single quotation marks and to be treated as a character (Microsoft Specific)

Allows tokens used as actual arguments to be concatenated to form other tokens

Simplifies the writing of compound expressions in certain macro directives

Reference

Preprocessor Directives
Predefined Macros

Other Resources

C/C++ Preprocessor Reference