Troubleshooting Incomprehensible List Input in Fortran 77 Program

[snowdrop]

Hi all,

I am trying to run a fortran 77 program which was compiled using g77 and it comes up with the following error ::

invalid number: incomprehensible list input
apparent state: internal I/O
lately reading sequential formatted internal IO
Abandon

I want the program to read some data files and analyse them so I have written the list like this ::

file01.dat
file02.dat
file03.dat
file04.dat

I have no idea why this error is coming up... I have checked the program and he seems fine and I have declared the list in the declarations. The part of code used to open the file with the list of data files is the following ::

open (20,file=liste(1:lliste),form='formatted',status='old')

If anyone has any ideas what the problem could be..

Thanks in advance

 

[AlephZero]

The error message is about a read statement, not an open statement. If says the data in the file was in the wrong format.

If you want to do read character strings with list-directed I/O like

character*50 liste
read(*,*) (liste)

then the character strings in the data file must be in quotes

'file1.dat'
'file2.dat'
...

To read character data without the quotes, do a formatted read using A format:

read(*,'A') (liste)

 

[ravenprp]

Hi there,

It seems like the error is related to the way you are inputting the list of data files. The program is not able to read the list and is throwing the "incomprehensible list input" error. This could be due to a few reasons:

1. Check the format of the list. Are you using the correct syntax? Make sure you are using the correct quotation marks and delimiters.

2. Make sure the list is declared correctly in the program. Check for any typos or missing declarations.

3. Check the data files themselves. Are they in the correct format? Make sure they are not corrupted or have any missing values.

4. It could also be an issue with the compiler. Try using a different compiler or updating your current one to see if that resolves the issue.

I hope this helps. Good luck!