程序代码：

#include "LinkList.h"
class Bank
{
private:
    LinkList * list;
    int account_number;
public:
    Bank();
    ~Bank();

    void set_list(LinkList *list);
    LinkList *get_list();

    LinkList *make_list();
    Record *make_record(string userName,string passWord,double balance);
    int creat_number();
    int get_number();
    string get_userName();
    string get_passWord();
    double get_balance();
    Record *find_record(int number);

    void open_acount();
    void close_acount();//销户
    void find_acount();
    void deposit();//存款
    void withdraw();//取