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Preprocessor Operators | Microsoft Docs |
11/04/2016 |
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article |
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884126d1-0ce2-48b6-9e06-8a2d7c4a9656 |
6 |
corob-msft |
corob |
ghogen |
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 |
|---|---|
| Stringizing operator (#) | Causes the corresponding actual argument to be enclosed in double quotation marks |
| Charizing operator (#@) | Causes the corresponding argument to be enclosed in single quotation marks and to be treated as a character (Microsoft Specific) |
| Token-pasting operator (##) | Allows tokens used as actual arguments to be concatenated to form other tokens |
| defined operator | Simplifies the writing of compound expressions in certain macro directives |
Preprocessor Directives
Predefined Macros
C/C++ Preprocessor Reference