Error directive
Shows the given error message and renders the program ill-formed.
Syntax
#error error_message
|
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.
Example
#if __STDC__ != 1
# error "Not a standard compliant compiler"
#endif
#include <stdio.h>
int main (void)
{
printf("The compiler used conforms to the ISO C Standard !!");
}
Possible output:
The compiler used conforms to the ISO C Standard !!
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
See also
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