다음을 통해 공유


#error Directive (C/C++)

 

The new home for Visual Studio documentation is Visual Studio 2017 Documentation on docs.microsoft.com.

The latest version of this topic can be found at #error Directive (C/C++). The #error directive emits a user-specified error message at compile time and then terminates the compilation.

Syntax

#errortoken-string  

Remarks

The error message that this directive emits includes the token-string parameter. The token-string parameter is not subject to macro expansion. This directive is most useful during preprocessing for notifying the developer of a program inconsistency or the violation of a constraint. The following example demonstrates error processing during preprocessing:

#if !defined
(__cplusplus)  
#error C++ compiler required.  
#endif  

See Also

Preprocessor Directives