you are shifting when $ARGV[0] is true, then your second argument is in $ARGV[0], too.

It has to be 
my $based_on = $ARGV[0] ? shift: 'tp';
my $top      = $ARGV[0] ? shift: 1;
print "$based_on $top\n";

[download]


But I would recommend to use Getopt::Long

In reply to Re: Ternary Operator for Multiple Arguments Passing by reneeb
in thread Ternary Operator for Multiple Arguments Passing by neversaint

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