Hi Monks, So I have two .txt files 
File 1
Start    Stop   Name
234     388    abc
458     267    pqr
...
...
873     490    xyz

[download]
File 2

Name

abc
dfr
hyt
hig
wer
pqr
...
...
xyz

[download]
What I have done is read the file 2 names and if they occur in file 1 then get an output for those names with their respective start and stops. For eg: abc and pqr of file 2 occur in file 1 hence, 
Output file
234     388    abc
458     267    pqr

[download]
What my problem is that the last entry which is 873     490    xyz should appear as the last entry in my output file but it isn't. I get all the others but the last entry isn't showing up on my output file. Any idea as to why this must be happening? Here is my code: 
#!/usr/bin/perl


# Open  info file, and read in all the name start and stops
my $input_file = "/Users/myfolder/inputfile.txt";
die "Cannot open $input_file\n" unless (open(IN, $input_file));

my %name_and_Start_Stop;
while (chomp($line = <IN>))
{
    my (@columns) = split /\s+/, $line;
    my $name = $columns[3];
    my $Start = $columns[1];
    my $Stop = $columns[2];
        $name_and_Start{$name} = $Start;
        $name_and_Stop{$name} = $Stop;
}
close(IN);

# Open the input file, and read each name
die "name_list.txt" unless open(IN, "name_list.txt");

#Open output file and write the name start and stops
die "output.txt" unless(open(OUT,"> output.txt"));

while (chomp($symbol = <IN>))
{
    my $Start = $name_and_Start{$name};
    my $Stop = $name_and_Stop{$name};
        print OUT "$Start\ $Stop \ $name \n";
}
close(OUT);
close(IN);

[download]
Why isn't it outputting the last name xyz? Is it something in the split function?

In reply to perl leaving out the last value? by perllearner007

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