#!/opt/perl524
use strict;
use warnings;
main() if ( !caller() );
sub main {
use CGI;
my $cgi = CGI->new;
if ( !$cgi->param ) {
print $cgi->header, my_form( 'action_url' => $cgi->url() );
exit;
}
my $num1 = $cgi->param('num1') || '';
my $num2 = $cgi->param('num2') || '';
# Next, add the value of the incoming parameters and display a result (not shown here)
#
my $sum = add_two_numbers( $num1, $num2 );
# Then print a result to the web browser and display a fresh form under the result (not shown here)
exit;
} ## end sub main
sub add_two_numbers {
my ( $num1, $num2 ) = @_;
return $num1 + $num2;
}
sub my_form {
my %params = @_;
my $action_url = $params{'action_url'} || '';
die
"No URL specified for the 'action' attribute of the form, can't continue"
if ( !$action_url );
my $form = qq|
Add Two Numbers
Add Two Numbers
|;
} ## end sub my_form