Preprocessor directives and white space

[JonM]

Rule 19.16 of MISRA C2 requires "In particular, ensure that #else and #endif directives are not followed by any characters other than white-space."

Does this rule apply to the end of the line or just the character following the 'e' or 'f'.

e.g.

Code:

#endif
/* header file exclusion */

vs

Code:

#endif /* header file exclusion */

vs

Code:

#endif/*header file exclusion */

Which of these is allowed / preferred / not allowed by MISRA C

Jonathan