Fortran in Windows

[cjkogan111]

Hello,
I downloaded gfortran (95) - mingw/native windows onto a windows XP OS.

I am trying to open a file outside of the default directory (bin)
I have tried the following methods:

OPEN(8,file='test\a.txt',status='old')

OPEN(8,file='c:\Program Files\gfortran\bin\test\a.txt',status='old')

For each, I get the following error -
Fortran runtime error: Invalid arguments

If I open a file in the default directory it works fine:
OPEN(8,file='a.txt',status='old')

Any suggestions?
Thanks,
cjkogan111

 

[GerritGroot]

Hi,

The error is in \ which is only used in dos and windows (as far as I know, I don't know what mac uses)

Fortran uses the unix convention, so you need to use / instead. The compiler will handle the difference between \ and / otherwise your code wouldn't be portable.

Something like:

OPEN(8,file='./test/a.txt',status='old')

Should work I think

Regards,

Gerrit

 

[gullipe]

Hi,

If GerritGroot's suggestion does not work try this:

1) Use double backslash. That could work.
OPEN(8,file='c:\\Program Files\\gfortran\\bin\\test\\a.txt',status='old')

2) Put the file name in a variable (that works fine in MS-Fortran for DOS):
character*80 str
str = 'c:\Program Files\gfortran\bin\test\a.txt'
lstr = len_trim(str)
open(8,file=str(1:lstr),status='old')

Best wishes
gullipe

 

[cjkogan111]

Thanks guys,
The ./ did the trick,

cjkogan111