1. #123ident; 2. #123'str'; 3. #123#124; 4. # (without following digits and not as part of {comment} and 'string') 5. 222.not_a_digit; 6. 222.222.222; 7. 222#123; 8. 222'str'; 9. ident#123; 10. ident'str';
I didn't consider these expressions in my program and got WA4.
