in reply to opening consecutive files

You don't show us the code with the counter, so it's hard to say where you went wrong. Here's a loop that starts with opening graph_set_1.out, and continues to increase the number until there's no matching file. 
for (my $c = 1;; $c ++) {
    my $file = "graph_set_$c.out";
    last unless -f $file;
    open my $fh => "<", $file or die "Failed to open $file: $!";
    ...  # Do something with $fh.
}

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Abigail

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Re: Re: opening consecutive files
by harry34 (Sexton) on Jun 27, 2003 at 13:26 UTC
    I have added the code that you have supplied.
    what I want to do is match the specified strings from each graph_set.out file and print strings into .txt file.
    It's not printing anything into the .txt file ? ? 
    #!/usr/local/bin/perl 

for (my $c = 1;; $c ++) {
    my $file = "graph_set_$c.out";
    last unless -f $file;
    open my $fh => "<", $file or die "Failed to open $file: $!";

local $/ = undef;       # undef record seperator
my $string = <IN>;         # read whole file into string    
close (IN);

my @gset_match = ($string =~ /([A-Z]\s\d+,\s\d+\(\s*\d+\))/g);

open (TEXT, ">graph_set.txt") or die "Can't create graph_set.txt: $!\n
+";
foreach $_(@gset_match) { print TEXT "$_\n"; }
close TEXT; 
}

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[reply]
[d/l]
      You are reading from a handle named IN, while the open opens a handle $fh. That isn't going to work. If you turn warnings on (which usually is a good idea), Perl would have told you that you were reading from an unopened filehandle.

      Abigail

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