问答题

阅读和理解下面程序段:
class Manager extends Employee
public Manager(String n,double s,int year,int month,int day)
super(n,s,year,month,day);
bonus=0;

public double getSalary()
double baseSalary-super.gerSalary();
return baseSalary+bonus;

public void setBonus(double b)bonus=b; )
private double bonus;

Manager是Employee的子类,其理由是( )。

【参考答案】

B
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