Congratulations on use of warnings and strict. You'll save much heartache down the road that way. 

my $op = shift @ARGV;
# first element of @ARGV now in $op and removed from @ARGV.

print add(@ARGV) . "\n"  if $op eq 'add';
print multiply(@ARGV) . "\n"  if $op eq 'multiply';
# subs as before

[download]
Or you can get fancy and have a hash table of functions: 
my $op = shift @ARGV;
# first element of ARGV in $op and removed from @ARGV.

my %h = ( add => \&add, multiply => \&multiply);

print $h{$op}->(@ARGV) . "\n";

# subs as before

[download]


--Bob Niederman, http://bob-n.com

In reply to Re: Passing Any Range of Values to a Sub by bobn
in thread Passing Any Range of Values to a Sub by Dru

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