#!/usr/bin/perl
use strict;
$SIG{PIPE} = 'IGNORE';
open( PIPE, "|net2.pl" ) or die "Cannot open pipe:$!";
select PIPE;
$| = 1;
select STDOUT;

my $count = 0;
for ( 1 .. 10 ) {
  warn "Writing line $_\n";
  if ( print PIPE "This is line number $_\n" ) {
    $count++;
  }
  else {
    warn " An error occured during writing :$!";
    last;
  }
  sleep 1;
}
close PIPE or die " Cannot close pipe : $!";
print "Wrote $count lines of text \n";


##</code><code>##

#!/usr/bin/perl
use strict;
for (1..3) {
  last unless defined (my $line = <>);
  warn " Read_three,got $line\n";
}