Use of uninitialized value in numeric ne (!=) at ./delme.perl line 7.
Argument "Hi" isn't numeric in numeric ne (!=) at ./delme.perl line 7.
Use of uninitialized value in numeric ne (!=) at ./delme.perl line 8.
Argument "" isn't numeric in numeric ne (!=) at ./delme.perl line 8.
Use of uninitialized value in numeric ne (!=) at ./delme.perl line 9.
$number is defined
Use of uninitialized value in numeric ne (!=) at ./delme.perl line 10.