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| Extrair |
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Compile a section of code if an identifier is defined. |
Syntax
| Sem Formato |
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#ifdef <identifier> <statements...> [#else] <statements...> #endif |
Arguments
| Name | Description |
|---|---|
| <identifier> | <identifier> is the name of a definition whose existence is being verified. |
Description
#ifdef...#endif lets you perform a conditional compilation. It does this by identifying a section of source code to be compiled if the specified <identifier> is defined.
The #else directive specifies the code to compile if <identifier> is undefined. The #endif terminates the conditional compilation block.
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