Sorry for the errors in the code.I am new to this.This is
the corrected code
use strict;
my($num2,$num1, $binary,$j );
print "enter the number\n";
$j=<>;
$num2=rand 2**$j;
$num1=int $num2;
$binary = dec2bin($num1);
print "binary=$binary\n";
sub dec2bin
{
my $str =join '', unpack "B32", pack "N", shift;
$str=substr($str,-$j);
return $str;
}
regards,
ruben
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