Code before warnings are enabled at line 46, column 1.  See page 431 of PBP.  (Severity: 4)
Mismatched operator at line 95, column 15.  Numeric/string operators and operands should match.  (Severity: 3)
Mismatched operator at line 193, column 15.  Numeric/string operators and operands should match.  (Severity: 3)