c23456789
!$omp parallel do shared(a,b,c)
c$omp parallel do
c$omp+shared(a,b,c)
c$omp paralleldoshared(a,b,c)
The following sentinels are recognized in fixed form source files:
!$omp | c$omp | *$omp | !$omx | c$omx | *$omx
The sentinels that end with omp are reserved for OpenMP directives that are defined in this specification. The sentinels that end with omx are reserved for implementation-defined extensions to the OpenMP directives.
Sentinels must start in column 1 and appear as a single word with no intervening characters. Fortran fixed form line length, white space, continuation, and column rules apply to the directive line. Initial directive lines must have a space or a zero in column 6, and continuation directive lines must have a character other than a space or a zero in column 6.
Comments may appear on the same line as a directive. The exclamation point initiates a comment when it appears after column 6. The comment extends to the end of the source line and is ignored. If the first non-blank character after the directive sentinel of an initial or continuation directive line is an exclamation point, the line is ignored.