HELP to open a file 1

[Truiteto]

I want to do something like

N=100
Do i=1,N
open (5, file='data'N'.txt')
enddo

but I know this is not correct

Can someone tell me how to do it?

I have been searching it for weeks but I am not able to find it.

Sorry for my english

 

[xwb]

Two problems here

1) You are opening different files with the same handle
2) Formatting the filename

Problem 1
Use an array for the file handles

integer handle(100)
do i = 1, n
   open (handle(i), ...)
enddo

Problem 2
Formatting - the problem is getting the integer in string form without a leading space

character*10 strnum
character*20 filename
integer handle(100)
do i = 1, n
   write (strnum, *) i, '.txt'
   name = 'data' // strnum(2:)
   print *, 'Opening ',name
   open (handle(i), file=name)
enddo