异质链表部分编译不通过
#include<iostream>
using namespace std;
class salary_base
{private:
int work_hour; //加班时间
public:
salary_base(){work_hour=0;}
int get_hour(){return work_hour;}
void set_hour(int hour){work_hour=hour;}
virtual int get_salary()=0;
};
class SeniorEngineer:public salary_base
{public:
int get_salary();
};
int SeniorEngineer::get_salary()
{return (8000+80*get_hour());}
class LowEngineer:public salary_base
{public:
int get_salary();
};
int LowEngineer::get_salary()
{return (5000+50*get_hour());}
class Engineer:public salary_base
{public:
int get_salary();
};
int Engineer::get_salary()
{return (4000+40*get_hour());}
typedef struct salary_node
{salary_base *p;
salary_node *next;
}salary_node;
int main()
{int a,b,c;
cin>>a>>b>>c;
SeniorEngineer obj1;
LowEngineer obj2;
Engineer obj3;
obj1.set_hour(a);
obj2.set_hour(b);
obj3.set_hour(c);
cout<<obj1.get_salary()<<endl;
cout<<obj2.get_salary()<<endl;
cout<<obj3.get_salary()<<endl;
salary_node *head=NULL;
salary_node *pr,*s=NULL;
s->p=new SeniorEngineer();
s->p->set_hour(a);
head=s;
pr=head;
s->p=new LowEngineer();
s->p->set_hour(b);
pr->next=s;
pr=s;
s->p=new Engineer();
s->p->set_hour(c);
pr->next=s;
pr=s;
pr->next=NULL;
int sum=0;
int i=0;
while(head)
{sum+=head->p->get_salary();
head=head->next;
i++;
}
cout<<sum/i<<endl;
}

[解决办法]
链表的各个节点都没有分配空间。
[解决办法]
楼主，你想实现什么？
[解决办法]

C/C++ code

class salary_base{private:    int work_hour; //加班时间public:    salary_base(){work_hour=0;}    int get_hour(){return work_hour;}    void set_hour(int hour){work_hour=hour;}    virtual int get_salary()=0;};class SeniorEngineer:public salary_base{public:    int get_salary();};int SeniorEngineer::get_salary(){    return (8000+80*get_hour());}class LowEngineer:public salary_base{public:    int get_salary();};int LowEngineer::get_salary(){    return (5000+50*get_hour());}class Engineer:public salary_base{public:    int get_salary();};int Engineer::get_salary(){    return (4000+40*get_hour());}typedef struct salary_node{    salary_base *p;    salary_node *next;}salary_node;int main(){    int a,b,c;    cin>>a>>b>>c;    SeniorEngineer obj1;    LowEngineer obj2;    Engineer obj3;    obj1.set_hour(a);    obj2.set_hour(b);    obj3.set_hour(c);    cout<<obj1.get_salary()<<endl;    cout<<obj2.get_salary()<<endl;    cout<<obj3.get_salary()<<endl;    salary_node *head=NULL;    salary_node *pr,*s=NULL;    s = new salary_node;    s->p=new SeniorEngineer();    s->p->set_hour(a);    head=s;    pr=head;    s = new salary_node;    s->p=new LowEngineer();    s->p->set_hour(b);    pr->next=s;    pr=s;    s = new salary_node;    s->p=new Engineer();    s->p->set_hour(c);    pr->next=s;    pr=s;    pr->next=NULL;    int sum=0;    int i=0;    while(head)    {        sum+=head->p->get_salary();        head=head->next;        i++;    }    cout<<sum/i<<endl;    return 0;}