Hi monks,
I'm back for stupid questions!:)
Now, I'm studied perlpacktut,and confused by some usage of them.
1.
my $buf = pack( 'NA*', length( $msg ), $msg ); #sender
my ($len_msg,$msg) = unpack('NA*',$buf);#receiver

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why we need to add a 'pack/unpack' behavior while transfering data? in my opnion,I could transfer variable directly.
2.
$status = "11010101";
$ps = pack('b16',$stauts);
print "$ps\n"; #junk char!!!!

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Please tell me what there is in $ps.
3.
How do I convert decimal to hex,oct,bin or others? or I should use sprintf?

Thanks in advance!

In reply to question of pack. by xiaoyafeng

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