Creating Multiple Output Files in Fortran

[wooly]

Hi guys,

I am tryin to get my program to output multiple files with the name of the file dependent on a number of integer variables in the program, any help with this would be greatfully appreciated.

Cheers

 

[mathmate]

You can try something along these lines (for F77).
Take care about the leading zeroes if you have different number of digits in the numeric part of the file.

      character*12 filename
      character*1 num
      do 20 I=1,9
      write(num,999)I
 999  format(I1)
      filename='A'//num//'.dat'
      print *,filename
      open(unit=5,file=filename, status='unknown')
   20 continue

Output:

A1.dat
A2.dat
A3.dat
A4.dat
A5.dat
A6.dat
A7.dat
A8.dat
A9.dat

 

[oswaler]

,

Hello,

There are a few ways to approach creating multiple output files in Fortran. One way is to use the "OPEN" statement with the "FILE" keyword to specify the name of the output file. You can use string concatenation to dynamically create the file name based on the integer variables in your program. Another option is to use the "WRITE" statement with the "UNIT" keyword to specify the output unit number, which can also be based on the integer variables in your program.

Additionally, you may want to consider using a loop to iterate through your integer variables and create multiple output files within the same program run. This can be done by using the "DO" loop or a similar construct.

I hope this helps and good luck with your program!