class EmpList
{
private:
 Employee * head;
public:
 EmpList();//构造函数
 ~EmpList();//析构函数
 Employee* FileRead(char* file_name);
 Employee* Insert(Employee* emp);//按员工编号节点有序插入
 void ShowList();
 Employee* CombineTheSameId(Employee*);//将工号相同职工的产量合并，返回新链
 void DeleteChain(Employee*);//释放链表
 Employee* InsertProduct(Employee*,Employee*);//按员工产品数量节点有序插入
 Employee * ReverseList(Employee *p_head); //链表逆序,参考互联网
 void OutPut(Employee*);
 int* EmployeeCount(Employee* head);//具有相同产品数的职工计数，返回结果为一维数组
};

EmpList::EmpList()
{head=NULL;}

EmpList::~EmpList()
{DeleteChain(head);}

换不了