Guys, here are some codes that I am learning, it demonstrates the caller function in subroutines, the first one works fine, the other code at the bottom does not, in it I am using the sytnax of caller EXPR and it is supposed to be returning back to me the name of the subroutine that called the subroutine which has the caller function in it. (i.e. it would return calling\n main,directory.pl,main::calling,the line# of the "calling"subroutine )...any clues on such unresponsiveness causes and what to do to avoid it? 
#works fine
sub addem{
        ($value1, $value2)=@_;
        $value1+$value2;
        print join(':',caller);     
        ($package, $filename, $line)=caller; 
        }
        
$value=addem(2,2);
print "\n$value1 + $value2 = $value";
print "\nthe package = $package\n";
print "the file = $filename\n";
print "the line = $line\n";

[download]
#not returning anything.
sub calling{
        $value=addem(2,2);
        }

sub addem{
        ($value1, $value2)=@_;
        $value1+$value2;
        print join(",", caller 1);
        }

[download]
p.s I am writing this code off a book that I am learning Perl from, it gives concise examples though it is sharp to the point and assumes you have some Perl's background.

In reply to getting a subroutine's name by biohisham

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