Why does Perl say Global symbol "SYMBOL" requires explicit package name at PROGRAM.pl line X?
I´m writing my first programs in Perl, and wrote this:
use strict; use warnings; $animal = "camel"; print($animal);
When I run it, I get these messages from the Windows command-line:
Global symbol "animal" requires explicit package name at stringanimal.pl line 3 Global symbol "animal" requires explicit package name at stringanimal.pl line 4
Please, could anyone what these messages mean?
use strict; forces you to declare your variables before using them. If you don't (as in your code sample), you'll get that error.
To declare your variable, change this line:
$animal = "camell";
my $animal = "camell";
P.S. Camel is spelt "camel" :-)
Edit: What the error message actually means is that Perl can't find a variable named $animal since it hasn't been declared, and assumes that it must be a variable defined in a package, but that you forgot to prefix it with the package name, e.g. $packageName::animal. Obviously, this isn't the case here, you simply hadn't declared $animal.
You have to put:
my $animal = "camel"
when using use strict.