How do I open files in Fortran 77?

[Bruno Solheid]

Hi, I have some doubts about how to open files in fortran 77.
The file must to be inside some particular directory?
Sorry about my english.

 

[mathmate]

If you are using Windows, try the following code. If you are using Unix or Linux, change the back-slash to slash, and use the appropriate directory name, for example:
/usr/myname/f77/test.dat
The status could be 'new', 'old', 'unknown', and there are other options.

C      open(10, file='testopen.dat',status='unknown')
C      open(10, file='..\testopen.dat',status='unknown')
       open(10, file='c:\proj\f77\testopen.dat',status='unknown')
C      read(10,*)x
C      read(10,*)y
C      print *,x,y
C      rewind 10
      write(10,*)10.0
      write(10,*)12.0
      print *,10.0,12.0
      stop
      end