Error directive - cppreference.com

##### cppreference.com

##### Search

Create account

##### Namespaces

- Page
- Discussion

##### Variants

##### Views

- View
- Edit
- History

##### Actions

# Error directive

From cppreference.com
< c‎ | preprocessor

Shows the given error message and renders the program ill-formed.

### [edit] Syntax

`#error` error_message |  |

### [edit] Explanation

After encountering the `#error` directive, an implementation displays the diagnostic message error_message and renders the program ill-formed (the compilation stops).

error_message can consist of several words not necessarily in quotes.

### [edit] References

- C11 standard (ISO/IEC 9899:2011):

  - 6.10.5 Error directive (p: 174)

- C99 standard (ISO/IEC 9899:1999):

  - 6.10.5 Error directive (p: 159)

- C89/C90 standard (ISO/IEC 9899:1990):

  - 3.8.5 Error directive

### [edit] See also

C++ documentation for Error directive

Retrieved from "http://en.cppreference.com/mwiki/index.php?title=c/preprocessor/error&oldid=79083"