post value in perl cgi and HTML not inserting properly - html

Question

i am new to Perl and using Perl in my back end script and HTML in front end and CGI framework . Initially i am reading some details from flat file and displaying them . I am then trying to print the details in the form of checkboxes. i am using use Data::Dumper; module to check the values . however my input value of the last checkbox has an extra space as shown below
print '<form action="process.pl " method="POST" id="sel">';
print '<input type="checkbox" onClick="checkedAll()">Select All<br />';
foreach my $i (#robos) {
print '<input type="checkbox" name="sel" value="';
print $i;
print '">';
print $i;
print '<br />';
}
print '<input type="submit" value="submit">';
print '</form>';
print "response " . Dumper \$data;
however in Process.pl the selected value is retrieved using
#server = $q->param('sel');
but the response of selection is
print "response " . Dumper \#server; => is showing [ 'ar', 'br', 'cr ' ]; which is
showing an additional space after cr . I dont know whats is wrong .
In my flat file i have
RMCList:ar:br:cr
i am then reading the details into an array and splitting using
foreach my $ln (#lines)
{
if ($ln =~ /^RMCList/)
{
#robos = split (/:/,$ln);
}
} #### end of for statement
shift (#robos);
print "The robos are ", (join ',', map { '"' . $_ . '"' } #robos), "\n";
This is showing the robos are:
"ar","br","cr
"

Answer 1

While reading the file into #lines, you forgot to remove the newline. This newline is interpreted as a simple space in a HTML document.
Remove the newlines with the chomp function like
chomp #lines;
before looping over the lines.
Actually, don't read the file into an array at all, unless you have to access each line more than once. Otherwise, read one line at the time:
open my $infile, "<", $filename or die "Cannot open $filename: $!";
my #robos;
while (my $ln = <$infile>) {
chomp $ln;
#robos = split /:/, $ln if $ln =~ /^RMCList/;
}