#!/usr/bin/perl
use warnings;
use strict;
use IPC::Open3;

my $pid = open3(\*WRITE, \*READ, 0,"success.pl");
            #if \*ERROR is false, STDERR is sent to STDOUT 

#get the answer 
chomp(my $answer = <READ>);
print "query = $answer\n";

waitpid($pid, 1);
# It is important to waitpid on your child process,  
# otherwise zombies could be created.