How Can I Pass ($b,%c,$d) to a Perl Sub
 

Call:
$a = &SumSub($b,%c,$d);

Sub:
sub SumSub{
# Make Passed Prams Available To SumSub
my ($b,%c,$d) = (@_);

The above is not working. I never receive "$d" in SumSub. Unfortunately I can not "$c = \%c;" because I can not go and change the existing SumSub calls to $c (to many).

Is there any way I can get $d into SumSub even when passing a Hash before it?

Pass it like this and it should work:
$a = &SumSub($b,$c,$d);

I cant send $c because in the other 500 locations that SumSub is called it already uses %c. If I would have written the code I would have referenced the Hash passing $c. But I have to use what is already there.

Here is a test:It returns:

You can receive $d like this in SumSub:

david_ross,
unfortunately I can not change how sumsub is called. I can not make it $c because in the 500 places the subsub is called it passes %c. I can only make the change from the inside of sumsub.

sasho,
I do receive $d using what you suggested, however when I use

$d = $_[scalar(@_)-1]; or $d = $_[2];

I no longer receive $b nor %c. I don't know why.

Thank you both. If you can think of anything, let me know.

Hmm I don't know what else to tell you... Either send a reference to the hash, rather than the whole %c, or make $d global, and work that way...

Are you forbidden from modifying the code to that sub? Search and replace will not do?

It's not quite clear how this sub is already being called, but you could use pop/shift as defined here: http://search.cpan.org/~nwclark/perl...erl_Functions,
the only problem is knowing when to do this and when not, if the current 500 calls do not pass the last param value ...
Possibly check if scalar(@_) is odd or even...

sasho, I work in a LARGE global company that requires a large amount of paperwork for each program changed(even if it is a minor change) that is why I don't change %c to $c.

Making $d global would work but I didn't want to do that. I have decided to just pass $d within %c (a little better than making $d global).

Sub:
sub SumSub{
# Make Passed Prams Available
my ($b,%c) = (@_);

$d = $c{$d};

Thank you all for the help.