Ok so I changed the last lines of the code 
    my (@qw)=induced(@{ $subgraphs[$d-1] });
    print Dumper @qw;
}

[download]
But still incorrect output 
component 2 = e d
$VAR1 = 'b';
$VAR2 = 'c';
$VAR3 = 'a';
component 1 = c a b
b c a
$VAR1 = 'b';
$VAR2 = 'c';
$VAR3 = 'a';

[download]

In reply to Re^2: Problem printing return value from a subroutine by zing
in thread Problem printing return value from a subroutine by zing

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