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/C (Preserve Comments During Preprocessing)

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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 Set C++ compiler and build properties in Visual Studio.

  2. Select the Configuration Properties > C/C++ > Preprocessor property page.

  3. Modify the Keep Comments property.

To set this compiler option programmatically

See also

MSVC Compiler Options
MSVC Compiler Command-Line Syntax
/E (Preprocess to stdout)
/P (Preprocess to a File)
/EP (Preprocess to stdout Without #line Directives)