题目内容:
20.publicfloatgetSalary(Employeee){21.assertvalidEmployee(e);22.floatsal=lookupSalary(e);23.assert(sal>0);24.returnsal;25.}26.privateintgetAge(Employeee){27.assertvalidEmployee(e);28.intage=lookupAge(e);29.assert(age>0);30.returnage;31.}Whichlineisaviolationofappropriateuseoftheassertionmechanism?()A.line21
B.line23
C.line27
D.line29
参考答案: