C 程序设计与应用基础第五章 多态性习题答案

{
public:
manager(){monthlyPay=8000;}
void promote(int){employee::promote(3);}
void pay();
void display();
protected:
double monthlyPay;
};
class salesmanager:public manager,public salesman
{
char namestr[50];
cout<<"请输入雇员姓名:";
cin>>namestr;
name=new char[strlen(namestr)+1];
strcpy(name,namestr);
no=MaxNo++;
grade=1;
Pay=0.0;
}
void technician::pay()
Base's des.
根据结果将程序补充完整。
#incude <iostream.h>
class Base
{
public:
Base(){cout<<"Base's cons."<<endl;}
___varitual ~Base（）___{cout<<"Base's des."<endl;}
};
class Derived:public Base
}
void manager::pay()
{
Pay=monthlyPay;
cout<<"经理"<<name<<"的编号为:"<<no<<"\t本月工资为:"<<Pay<<endl;
}
void manager::display()
{
cout<<"经理"<<name<<"的编号为:"<<no<<"\t级别为:"<<grade<<"级,己付本月工资:"<<Pay<<endl;
void promote(int){employee::promote(2);}
void pay();
void display();
private:
double hourlyRate;
int workHours;
};
class salesman:virtual public employee
{
public:
salesman(){CommRate=0.04;}
void promote(int){employee::promote(2);}
void pay();
void display();
protected:
double CommRate;
double sales;
};
class manager:virtual public employee
List *head, *tail, *next;
int num;
};
class Quene:public List
{
public:
void Store(int i);
int Retrieve();
};
void Quene::Store(int i)
{
List *item;
item=new Quene;
Base(int I){b=I;}
_____vitual void print（）______
protected:
int b;
}
class Derive1:public Base
{
public:
_____Derivel1（int I):Base（I){}______
void Print()
{
cout<<"Derive1's Print() called."<<endl;
}
void salesmanager::pay()
{
cout<<"请输入"<<employee::name<<"所管辖部门本月的销售总额:";
cin>>sales;
Pay=monthlyPay+CommRate*sales;
cout<<"销售经理"<<name<<"的编号为:"<<no<<"\t本月工资为:"<<Pay<<endl;
{
cout<<"请输入"<<name<<"本月的工作时间:";
cin>>workHours;
Pay=hourlyRate*workHours;
cout<<"兼职技术人员"<<name<<"的编号为:"<<no<<"\t本月工资为:"<<Pay<<endl;
}
void technician::display()
int Retrieve();
};
void Stack::Store(int i)
{
List *item;
item=new Stack;
if(!item)
{
cout<<"Allocation error."<<endl;
abort();
}
item->num=i;
if(head)
item->next=head;
{
public:
Derived(){cout<<"Derived's cons."<<endl;}
~Derived(){cout<<"Derived's des."<<endl;}
};
void main()
{
Base *Ptr=___new Derived；__
delete ptr;
}
4）C++中__不支持___虚构造函数,但__支持___虚析构函数
}
void salesmanager::display()
{
cout<<"销售经理"<<name<<"的编号为:"<<no<<"\t级别为:"<<grade<<"级,己付本月工资:"<<Pay<<endl;
}
void main()
{
manager m1;
technician t1;
salesmanager sm1;
___①___人员编号基数为1000,每输入一个人员信息,编号顺序加1。
___②___程序具有对所有人员提升级别的功能。经理为4级,兼职技术人员和销售经理为3级,推销员为1级。
___③___月薪计算方法是:经理拿固定月薪8000元；兼职技术人员按每小时100元领取月薪；兼职推销员的月薪按该推销员当月销售额的4%提成；销售经理既拿固定月薪也领取销售提成,固定月薪为5000元,销售提成为所管辖部门当月销售额的5‰。
5）带有__纯虚函数___的类称为抽象类,它只能作为___基类___来使用。
6）下列程序的运行结果如下:
Derive1's Print() called.
Derive2's Print() caIIed.
根据结果将程序补充完整。
#include <iostream.h>
class Base
{
public:
head=item;
if(!tail)
tail=head;
}
int Stack::Retrieve()
{
int i;
List *p;
if(!head)
{
cout<<"Stack empty."<<endl;
return 0;
}
i=head->num;
p=head;
head=head->next;
delete p;
第五章多态性
1、填空题
1）在一个成员函数内调用一个虚函数时,对该虚函数的调用进行___动态______联编。
2）动态联编是在__虚函数___的支持下实现的,它通过___指针和引用__来调用该函数操作。
3）下列程序的运行结果如下:
Base's cons.
Derived's cons.
Derived's des.
return i;
}
void main()
{
List *p;
Quene qobj;
p=&qobj;
for(int i=0;i<3;i++)
p->Store(i+1);
cout<<"Quene.";