I am using fortran 77 and looking for a function/subroutine which help me to generate many data files automatically to be used for animation. Now I am doing it manully but make me tired.

e.g i need to rename p.out as p1.out,.. p1.out ->p2.out ....pn-1 ->pn.out after every 5o iteration.

any one can help me.

thanks

Use the following command:

write(filename,'(a3,i4.2,a4)')'RES',NUM,'.OUT'

OPEN(2,FILE=filename)

Write(2,*)...

.

.

.

Close(2)

Just put the above in a loop while NUM is changed for each output file. You should make files such as: RES 1.OUT, RES 2.OUT and ...

Can this syntax be applied to Fortran 90??

I've been opening several files, then

open(50,.) open(51 open(52 ...

do i=50,whatever asdfasdf

write(i,*)

end do

this would make things much easier if I could use it in 90.

It works also in Fortran 90.