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  1. or download this
    Found = in conditional, should be == at scope_test.pl line 5.
  2. or download this
    use strict;
use warnings;
...
    $y = 0;
    print "hello (y = $y)\n";
}
  3. or download this
    use strict;
use warnings;
...
    $y = 0;
    print "hello (y = $y)\n";
}