WOLFRAM

Wolfram Language & System Documentation Center

CPreprocessorIf[cond]

is a symbolic representation of a preprocessor if conditional.

CPreprocessorIf[cond,true,false]

represents the true and false cases.

Details and Options
Details and Options Details and Options
Examples  
Basic Examples  
See Also
Tech Notes
Related Guides
Cite this Page
SymbolicC`
SymbolicC`

CPreprocessorIf

CPreprocessorIf[cond]

is a symbolic representation of a preprocessor if conditional.

CPreprocessorIf[cond,true,false]

represents the true and false cases.

Details and Options

  • SymbolicC expressions are inert; they evaluate to themselves, staying in an unevaluated form.
  • SymbolicC expressions can be converted into a C string with ToCCodeString.

Examples

Basic Examples  (1)

To use SymbolicC you first need to load the package:

This creates a preprocessor if conditional directive:

This creates an entire if/else/endif set of statements:

This adds a comment to the if directive:

Wolfram Research (2010), CPreprocessorIf, Wolfram Language function, https://reference.wolfram.com/language/SymbolicC/ref/CPreprocessorIf.html.

Text

Wolfram Research (2010), CPreprocessorIf, Wolfram Language function, https://reference.wolfram.com/language/SymbolicC/ref/CPreprocessorIf.html.

CMS

Wolfram Language. 2010. "CPreprocessorIf." Wolfram Language & System Documentation Center. Wolfram Research. https://reference.wolfram.com/language/SymbolicC/ref/CPreprocessorIf.html.

APA

Wolfram Language. (2010). CPreprocessorIf. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/SymbolicC/ref/CPreprocessorIf.html

BibTeX

@misc{reference.wolfram_2025_cpreprocessorif, author="Wolfram Research", title="{CPreprocessorIf}", year="2010", howpublished="\url{https://reference.wolfram.com/language/SymbolicC/ref/CPreprocessorIf.html}", note=[Accessed: 16-August-2025]}

BibLaTeX

@online{reference.wolfram_2025_cpreprocessorif, organization={Wolfram Research}, title={CPreprocessorIf}, year={2010}, url={https://reference.wolfram.com/language/SymbolicC/ref/CPreprocessorIf.html}, note=[Accessed: 16-August-2025]}