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Reading files inside many numbered folders

Reading files inside many numbered folders

(OP)
Hello,

I have a number of folders labeled K00001 to K00100 in my scratch folder. Each folder contains a file called a.dat.

From my scratch folder, I would like to go into each folder, read the content of a.dat, save the necessary information to an array and then move on to the next folder.

I declared a CHARACTER as such:

CHARACTER(*), PARAMETER :: fileplace ="/home/vahid/scratch/K"

The I run a DO loop over the folders:

DO f=1,100
OPEN(unit=100,'(a,i5,a)') 'fileplace',f,'/a.dat'
read the file, etc.
ENDDO

The OPEN statement results in the following error:

error #5082: Syntax error, found IDENTIFIER 'FILEPLACE' when expecting one of: <END-OF-STATEMENT> ;
OPEN(unit=100,'(a,i5,a)') fileplace,f,/a.dat

Any suggestions as to how I can resolve this error would be a great help.

Thank you,

Vahid

RE: Reading files inside many numbered folders

You need to create the filename in a buffer first

CODE

character(256):: filename
...
do f = 1, 100
   ! create the filename
   write(filename,'(a,i5,a)') fileplace, f, 'a.dat'
   ! open the file
   open(unit = 100, file=filename)
   ...
end do 

RE: Reading files inside many numbered folders

(OP)
Thanks xwb. It worked. I just had to use i5.5 instead of i5 in the format statement to get the leading zeros.

Best wishes,

Vahid

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