I checked my script using "perl -w -c" and get a "Global symbol "..." requires explicit package name" error. I am using strict and understand I need to explicitly define each variable. However, when I assign either "my" or "local" to the variables, I still get the same message. The error refers to @allquestions, $anslength, @allanswers on lines 22, 27, 28, 34, 45, 46. Below is the script. Thanks. 
#!/usr/bin/perl
#c:\sambar50\perl\perl.exe

use CGI qw(:standard);
use strict;
use warnings; 
print header;

local $/ = "~\n";   # *** CHANGES INPUT RECORD SEPARATOR TO ~line brea
+k
print start_html (-title=>'quiz', -BGCOLOR=>'beige');
print start_form (-method=>'POST', -action=>"http://localhost/cgi-bin/
+gradequiz.cgi");

my $file = param('file');
open (FILE, $file) || die "Cannot open $file: $!";

while (<FILE>) {    # ** READS EACH LINE OF TEXT FROM FILE
chomp;                # ** BY DEFAULT, CHOMPS OFF $/ FROM EACH LINE
my ($type, $value) = split (/:/, $_);     # ***** SPLITS EACH LINE BY 
+TYPE AND CONTENT

if ($type =~ m/q/i) {    # ** CHECKS FOR QUESTION LINE & PRINTS QUESTI
+ON
   print "<B>$value</B><BR>";
   local @allquestions = (@allquestions, $value);
}

if ($type =~ m/a/i) {    # ** CHECKS FOR ANSWER LINE
    my @answers = split (/,/, $value);      # ** SPLITS ANSWER LINE IN
+TO ARRAY
    local $anslength = @answers;        # ** LENGTH OF @ANSWERS
    local @allanswers = (@allanswers, $value);
}
                            #** CHECKS FOR SELECTION LINE AND
if ($type =~ m/^s/) {        # ** TYPE OF ANSWER BOX
    my     %selections = split (/,/, $value);
    my @options = keys (%selections);
       if ($anslength > 1) {    # ** DETERMINES TO USE RADIO OR CHECKB
+OX
       print checkbox_group(-name=>$type, -values=>\@options, -linebre
+ak=>'true', -labels=>\%selections);
       }else {
          print "<BR>";
          print radio_group(-name=>$type, -values=>\@options, -linebre
+ak=>'true', -labels=>\%selections, -default=>'-');
          }
    print "<BR><HR><BR>";
} # END IF STATEMENT
}   # ** END WHILE STATEMENT
close (FILE);

print hidden(-name=>"answers", -default=>\@allanswers);
print hidden(-name=>"questions", -default=>\@allquestions);

print "<CENTER>";
print submit (-value=>'Grade') . "&nbsp; &nbsp;";
print reset (-value=>'Reset answers');
print "</CENTER>";

print end_form;
print end_html;

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In reply to explicit package name by chriso

Title:
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