LinuxQuestions.org - [SOLVED] Where is the error in a Gfortran file?

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Where is the error in a Gfortran file?

Hi there. My environment is: Win 7==>Oracle VB=>>Ubuntu==>Gfortran. I am trying to restore my previous FORTRAN skills starting with something elementary. This is the code:

Code:

#Attempt to read a few files in the directory and compare the values

program main

  real :: val

  900 format (F8.3)

  open (unit=1, file = "gray_disk_impr_100_256_128.dat", status = 'old')

  read (unit=1,900) val

  write (unit=6,900) val

  close (unit=1)

end

While compiling I get this error. It points to read and write statements (identical errors). The pointer points to the number 900 (format). It says:

Code:

fortran_1.f08:6.16:



  read (unit=1,900) val

                1

Error: Syntax error in READ statement at (1)

You can see that the source code file extension is .f08. I also tried to use an asterisk instead of a numbered format statement and it gave me an error. Where is the problem?

Thanks, - Alex

P.S. Also Is there a description of all error codes for GFortran?

OK, I found the error:

The read statement should have been:

read(1,900), that's it. "unit" killed it. The same is of course true for the write statement. The last unresolved issue I have is a warning: illegal preprocessing directive. It does not say what kind. I really do not have any. Thanks.

Yes you do - your first line. You use '!' to denote comments in Fortran, not '#'.

Wow, it worked! It may be the most valuable suggestion I have received here for some time. Appreciate it. Thanks.