c-preserve-comments-during-preprocessing.md

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-C (Preserve Comments During Preprocessing) | Microsoft Docs		11/04/2016			cpp-tools		article	VC.Project.VCCLCompilerTool.KeepComments /c VC.Project.VCCLWCECompilerTool.KeepComments	C++	comments, not stripping during preprocessing preserve comments during preprocessing -c compiler option [C++] c compiler option [C++] /c compiler option [C++]	944567ca-16bc-4728-befe-d414a7787f26	11	corob-msft	corob	ghogen

/C (Preserve Comments During Preprocessing)

Preserves comments during preprocessing.

Syntax

/C  

Remarks

This compiler option requires the /E, /P, or /EP option.

The following code sample will display the source code comment.

// C_compiler_option.cpp  
// compile with: /E /C /c  
int i;   // a variable  

This sample will produce the following output.

#line 1 "C_compiler_option.cpp"  
int i;   // a variable  

To set this compiler option in the Visual Studio development environment

1. Open the project's Property Pages dialog box. For details, see Working with Project Properties.

2. Click the C/C++ folder.

3. Click the Preprocessor property page.

4. Modify the Keep Comments property.

To set this compiler option programmatically

• See xref:Microsoft.VisualStudio.VCProjectEngine.VCCLCompilerTool.KeepComments%2A.

See Also

Compiler Options
Setting Compiler Options
/E (Preprocess to stdout)
/P (Preprocess to a File)
/EP (Preprocess to stdout Without #line Directives)