COMMAND_ARGUMENT_COUNT — Get number of command line argumentsCOMMAND_ARGUMENT_COUNT returns the number of arguments passed on the
command line when the containing program was invoked.
     RESULT = COMMAND_ARGUMENT_COUNT()
     | None
      | 
INTEGER of default kind.
               program test_command_argument_count
              integer :: count
              count = command_argument_count()
              print *, count
          end program test_command_argument_count