原文：
修正了下。
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CGUI.ccp：
1 #include<iostream> 2 #include <cstdio> 3 #include "cdbase.h" 4 using namespace std; 5 class CGUI 6 { 7 public: 8 CGUI() :_running(true) {} 9 void run(); 10 void showmainmenu() //主页面 11 { 12 cout << "****************" << endl; 13 cout << " 1.登录 " << endl; 14 cout << " 2.注册 " << endl; 15 cout << " 3.退出 " << endl; 16 cout << "****************" << endl; 17 } 18 void dologin() //登陆页面 19 { 20 cout << "请输入登录名:" << endl; 21 gets_s(_name); 22 cout << "请输入密码:" << endl; 23 gets_s(_pwd); 24 if (_db.CheckUserAuth(_name, _pwd)) 25 { 26 cout << "登陆成功" << endl; 27 } 28 else 29 { 30 cout << "用户名或密码错误！" << endl; 31 } 32 } 33 void doregister() //注册页面 34 { 35 cout << "欢迎注册" << endl; 36 cout << "请输入注册名称" << endl; 37 gets_s(_name); 38 cout << "请输入密码:" << endl; 39 gets_s(_pwd); 40 if (_db.query(_name)) 41 { 42 cout << "该用户已经注册过,请重新填写" << endl; 43 } 44 else 45 { 46 _db.WriteUserInfo(_name, _pwd); 47 cout << "用户名" << _name << "注册成功" << endl; 48 } 49 } 50 void doexit() //退出页面 51 { 52 exit(0); 53 } 54 private: 55 char _name[20]; 56 char _pwd[20]; 57 bool _running; 58 CDBase _db; 59 }; 60 typedef void (CGUI::* pfunc)(); 61 typedef struct _tableitem 62 { 63 int choice; 64 pfunc pfunc; 65 }tableitem; 66 tableitem gtable[] = 67 { 68 {1,&CGUI::dologin}, 69 {2,&CGUI::doregister}, 70 {3,&CGUI::doexit} 71 }; 72 int gtablelen = sizeof(gtable) / sizeof(gtable[0]); 73 void CGUI::run() 74 { 75 int chioce; 76 while (_running) 77 { 78 showmainmenu(); 79 cout << "请选择：" << endl; 80 cin >> chioce; 81 //getchar(); 82 //switch语句或for循环都可以，不过后者更适用于公司编写 83 /*switch(choice) 84 { 85 case 1: 86 dologin(); 87 break; 88 case 2: 89 doregister(); 90 break; 91 case 3: 92 doexit(); 93 break; 94 }*/ 95 for (int i = 0; i<gtablelen; i++) 96 { 97 if (chioce == gtable[i].choice) 98 { 99 (this->*gtable[i].pfunc)(); 100 } 101 } 102 } 103 } 104 int main() 105 { 106 CGUI gui; 107 gui.run(); 108 return 0; 109 }
CDBase.h：
1 #ifndef CIRCLE_H 2 #define CIRCLE_H 3 #include <iostream> 4 using namespace std; 5 class CDBase 6 { 7 public: 8 CDBase() 9 { 10 _phead = new Node(); 11 } 12 ~CDBase() 13 { 14 Node* ptr = _phead; 15 while (ptr != NULL) 16 { 17 _phead = _phead->_pnext; 18 delete ptr; 19 ptr = _phead; 20 } 21 } 22 bool CheckUserAuth(char* name, char* pwd) //判断用户名、密码是否匹配 23 { 24 Node* ptr = _phead->getNext(); 25 while (ptr != NULL) 26 { 27 if ((strcmp(name, ptr->_name) == 0 && strcmp(pwd, ptr->_pwd) == 0)) 28 return true; 29 ptr = ptr->getNext(); 30 } 31 return false; 32 } 33 bool query(char* name) //名字是否匹配 34 { 35 Node* ptr = _phead->getNext(); 36 while (ptr != NULL) 37 { 38 if (strcmp(name, ptr->_name) == 0) 39 return true; 40 ptr = ptr->getNext(); 41 } 42 return false; 43 } 44 void WriteUserInfo(char* name, char* pwd) 45 { 46 Node* pnode = new Node(name, pwd); 47 pnode->sexNext(_phead->getNext()); 48 _phead->sexNext(pnode); 49 } 50 private: 51 struct Node 52 { 53 Node() :_pnext(NULL) {} 54 Node(char* n, char* p) :_pnext(NULL) 55 { 56 strcpy_s(_name, n); 57 strcpy_s(_pwd, p); 58 } 59 char _name[20]; 60 char _pwd[20]; 61 Node* _pnext; 62 void sexNext(Node* p) 63 { 64 _pnext = p; 65 } 66 Node* getNext() 67 { 68 return _pnext; 69 } 70 }; 71 Node* _phead; 72 }; 73 #endif