Perhaps you want this : 
sub subroutine_1 {
  my $val = subroutine_2();
  print "$val this is subroutine_2 output!";
}

sub subroutine_2 {
  return "w00t!";
}

[download]
It does not pass it back to subroutine_2 but should give you a rough idea of how things like these work.

In reply to Re^3: To call a sub from another sub by jkva
in thread To call a sub from another sub by tamaguchi

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