C语⾔实现餐饮点餐管理系统本⽂实例为⼤家分享了C语⾔实现餐饮点餐管理系统的具体代码，供⼤家参考，具体内容如下具体代码如下/*项⽬名称：南航餐饮管理系统组员：梁⽂新，刘青林，刘艺，施瑞⽂（组长）*///当注册⽤户名为：root，密码为：root的账号时，系统默认为初始管理员//头⽂件#include<stdio.h>#include<stdlib.h>#include<time.h>#include<conio.h>#include<windows.h>#include<string.h>//宏定义区#define M sizeof(struct User)//⽤户表的⼤⼩#define N sizeof(struct stapleFood)//主⾷表⼤⼩#define P sizeof(struct non_stapleFood)//副⾷表⼤⼩#define Q sizeof(struct Drink_beverage) //饮品表⼤⼩#define X sizeof(struct Table)//餐桌表⼤⼩#define Y sizeof(struct Form)//订单表⼤⼩//结构体struct User //⽤户表{char userName[10];//⽤户名char passWord[18];//密码int isVIP;//会员标记int isAdministrator;//管理员标记float money;//余额struct User *next;//指针域};typedef struct User user;typedef user* pUser;struct stapleFood //主⾷{char name[20];float price;struct stapleFood *next;};struct non_stapleFood //副⾷{char name[20];float price;struct non_stapleFood *next;};typedef struct non_stapleFood non_staple_food;typedef non_staple_food *pNon_stapleFood;struct Drink_beverage //饮品{char name[20];float price;struct Drink_beverage *next;};typedef struct Drink_beverage drinkBeverage;typedef drinkBeverage *pDrinkBeverage;struct Table //餐桌{int ID;//餐桌编号int People;//已坐⼈数int count;//可容纳⼈数char Username[10];//订餐⼈struct Table *next;};typedef struct Table table;typedef table *pTable;struct Form //订单{char name[20];float price;struct Form *next;};typedef struct Form orderForm;typedef orderForm *pOrder;//⾃定义函数区//⽤户客户端void Default();//欢迎界⾯void User_Login();//⽤户登录界⾯void Logon();//注册界⾯pUser readUserFile();//从⽂件中读取⽤户信息，返回⼀个表头地址void save_User(pUser p1);//将⽤户信息保存到⽂件中void User_Menu();//⽤户菜单void User_Order();//点餐void Order_StapleFood();//主⾷void Order_nonStapleFood();//副⾷void Order_DrinkBeverage();//饮品void Order_Form(int ID,int number);//订单void User_List_Table();//餐桌列表void Apply_VIP_Menu();//会员办理菜单void Add_money(pUser head);//充值void Updata_User(pUser head);//更新⽤户表void Apply_VIP(pUser head);//办理会员void User_Wallet();//我的钱包//管理员客户端void Administrator_Menu();//管理员菜单void Administrator_Login();//管理员登录void Check_User();//查看⽤户void Find_User();//查找⽤户void All_User();//查看所有⽤户void All_VIP();//本店会员void Setup_administrator();//设置管理员void Food();//菜品信息void Add_Food();//添加菜单void save_stapleFood(pStapleFood p);//保存主⾷信息void save_non_stapleFood(pNon_stapleFood p);//保存副⾷信息void save_drinkBeverage(pDrinkBeverage p);//保存饮品信息pStapleFood readStapleFoodFile();//从主⾷⽂件中读取⽤户信息，返回⼀个表头地址pNon_stapleFood readNonStapleFoodFile();//从副⾷⽂件中读取⽤户信息，返回⼀个表头地址pDrinkBeverage readDrinkBeverageFile();//从饮品⽂件中读取⽤户信息，返回⼀个表头地址void Table();//餐桌管理void Add_Table();//添加餐桌void save_Table(pTable p);//保存餐桌信息pTable readTableFile(); //从餐桌⽂件中读取⽤户信息，返回⼀个表头地址void Clear_Table();//清理餐桌void Clear_oneTable();//清理指定餐桌void Administrator_List_Table();//餐桌列表//公共函数void toxy(int x,int y);//将光标移动到x，y坐标处void HideCursor(int x);//隐藏光标char *HidePassword();//隐藏密码void Exit();//退出系统void Change();//切换账号void Amend_passWord();//修改密码void List_Food();//菜单列表//全局变量区char _userName[10];char _passWord[18];//记录当前⽤户pOrder orderHead=NULL,p2=NULL;//记录当前⽤户的订单int num=0;//函数实现区void toxy(int x,int y)//将光标移动到x，y坐标处{COORD pos={x,y};HANDLE Out = GetStdHandle(STD_OUTPUT_HANDLE);SetConsoleCursorPosition(Out,pos);}void HideCursor(int x)//隐藏光标 ,当x为0时，隐藏，为1时，显⽰{CONSOLE_CURSOR_INFO cursor_info ={1,x};SetConsoleCursorInfo(GetStdHandle(STD_OUTPUT_HANDLE),&cursor_info); }void Default()//欢迎界⾯{char t;//⽤于选择do{HideCursor(0); //隐藏光标system("color 72");toxy(28,8);printf(" 欢迎来到南航餐饮！ ");toxy(26,9);printf("-----------------------------");toxy(27,11);printf("1.登录 2.注册 3.管理员登录");while(1) //死循环为防⽌其他按键⼲扰{t=getch();//不回显函数if(t=='1')//如果按1，则进⼊登录界⾯User_Login();else if(t=='2')//如果按2，则进⼊注册界⾯Logon();else if(t=='3')Administrator_Login();}//如果既不是1也不是2和3，则循环输⼊}while(1);//永远为真}void User_Menu()//⽤户菜单{char t;//⽤于选择菜单选项do{system("cls");HideCursor(0); //隐藏光标system("color 74");toxy(32,3);printf("南航餐饮点餐系统！");toxy(32,4);printf("当前⽤户：%s",_userName);toxy(30,5);printf("*********************");toxy(32,7);printf("| 1.菜单列表 |");toxy(32,9);printf("| 2.餐桌列表 |");toxy(32,11);printf("| 3.会员办理 |");toxy(32,13);printf("| 4.修改密码 |");toxy(32,15);printf("| 5.我的钱包 |");toxy(32,17);printf("| 7.退出系统 |");t=getch();//不回显函数，输⼊⼀个值switch(t){case '1':User_Order();break;case '2':User_List_Table();break;case '3':Apply_VIP_Menu();break;case '4':Amend_passWord();break;case '5':User_Wallet();break;case '6':Change();break;case '7':Exit();break;default :break;}}while(1);//永远为真}char *HidePassword()//隐藏密码{char password[18];//密码char *p;//指向密码的指针int i=0;//记录密码位数char t;//输⼊密码for(;;) //此处为输⼊密码不回显操作{t=getch(); //输⼊kif(t=='\r') //如果输⼊k为回车，则跳出循环{break;}else if(t=='\b') //如果输⼊k为删除键{if(i>0) //如若密码还没完全删除{printf("\b");printf(" ");printf("\b");i--;}}else //如果输⼊的k既不是删除键，也不是回车键{password[i]=t; //把k的值赋给_password[i];printf("*"); //输出*号，保护⽤户隐私i++; //密码位数加1}}password[i]='\0';//在数组末端加⼀个结束符p=password;//让p指向该数组return p; //返回⼀个指向密码的指针}pUser readUserFile()//从⽂件中读取⽤户信息，返回⼀个表头地址{FILE *fp; //⽂件指针int n=0;//记录链表的结点数pUser head=NULL;//定义头指针pUser p2,p,pre;fp=fopen("User.txt","a+"); //以只读的⽅式打开⽂件if(fp==NULL){printf("cannot open file\n");}else{while(!feof(fp)) //判断⽂件位置标志是否移动到⽂件末尾{n++;p=(pUser)malloc(M); //向内存申请⼀段空间fread(p,M,1,fp); //将fp所指向的⽂件中的内容赋给pif(n==1){head=p;p2=p;}else //创建链表{pre=p2;p2->next=p;p2=p;}}p2->next=NULL;}if(n<=2)head->next=NULL;elsereturn head; //返回头指针}void save_User(pUser p1) //将p1所指向的内容存储到⽂件中{FILE *fp; //⽂件指针fp=fopen("User.txt","a+"); //以追加的⽅式打开⽂件if(fp==NULL){printf("cannot open file\n");}if(fwrite(p1,M,1,fp)!=1) //将p1所指向的1个⼤⼩为N的数据结构写⼊fp所指向的⽂件中{printf("file write error\n");}fclose(fp); //关闭⽂件}void User_Login()//登录页⾯{char *q,t,c;//q指针⽤于接收 *HidePassword()函数返回的指向密码的指针，t和c均⽤于选择pUser p=readUserFile();//从⽂件中读取⽤户信息，返回⼀个表头地址do{HideCursor(1);//显⽰管光标system("cls");//清屏system("color 73");//设置颜⾊toxy(28,8);printf("南航餐饮管理系统登录界⾯");toxy(26,9);printf("-----------------------------");toxy(32,11);printf("⽤户名:");toxy(32,13);printf("密码:");toxy(40,11);scanf("%s",_userName);toxy(40,13);q=HidePassword();//输⼊密码strcpy(_passWord,q);//将获得的密码复制给_passWord[]数组while(p!=NULL&&strcmp(p->userName,_userName)!=0) //遍历链表，寻找当前输⼊的账户的账号 {p=p->next;}if(p!=NULL) //如果p不为空{if(strcmp(p->passWord,_passWord)==0) //如果输⼊的密码正确{toxy(32,16);printf("正在登陆....");Sleep(500); //暂停0.5秒system("cls");toxy(32,10);printf("登陆成功！");break; //跳出循环}else //如果输⼊的密码错误{toxy(32,16);printf("正在登陆....");Sleep(500);system("cls");toxy(30,8);printf("-------------------------");toxy(30,9);printf("| |");toxy(30,10);printf("| 密码错误！是否继续？ |");toxy(30,12);printf("| 1.是 2.否 |");toxy(30,13);printf("| |");toxy(30,14);printf("-------------------------");while(1)//⽆限循环为防⽌其他按键⼲扰{t=getch(); //输⼊tif(t=='1'){system("cls"); //清屏break;}else if(t=='2') //如果输⼊t为n，进⼊开始界⾯{system("cls"); //清屏Default();break;}}else //如果p为空，即输⼊的账号不正确{toxy(32,16);printf("正在登陆....");Sleep(500);system("cls");toxy(30,8);printf("-------------------------");toxy(30,9);printf("| |");toxy(30,10);printf("| 账号错误！是否继续？ |");toxy(30,11);printf("| |");toxy(30,12);printf("| 1.是 2.否 |");toxy(30,13);printf("| |");toxy(30,14);printf("-------------------------");while(1) //死循环防⽌其他按键⼲扰{c=getch();if(c=='1'){system("cls");break;}else if(c=='2'){system("cls"); //清屏Default();}}}}while(1);Sleep(500); //暂停0.5秒User_Menu(); //账号密码均正确，进⼊⽤户主菜单}void Logon()//注册界⾯{pUser p1;pUser p=readUserFile();//从⽂件中读取⽤户信息，返回⼀个表头地址p1=(pUser)malloc(M); //向内存申请⼀段空间char *q1,*q2;//q1，q2分别⽤于接收 *HidePassword()函数返回的值char userName[10],passWord[18],againPassword[18],c,k,t;//c，k，t均⽤于选择 do{system("cls");system("color 73");HideCursor(1);//显⽰光标int flag=0;//标记信息库中是否存在要注册⽤户名toxy(28,8);printf("南航餐饮管理系统注册界⾯");toxy(26,9);printf("-----------------------------");toxy(32,11);printf("⽤户名:");toxy(32,13);printf("密码:");toxy(32,15);printf("确认密码:");toxy(42,11);scanf("%s",userName);//输⼊⽤户名toxy(42,13);q1=HidePassword();//输⼊密码strcpy(passWord,q1);toxy(42,15);q2=HidePassword();//输⼊确认密码strcpy(againPassword,q2);while(p!=NULL) //遍历链表，寻找当前输⼊的账户的账号{if(strcmp(p->userName,userName)==0)//如果信息库中存在该⽤户名{toxy(32,17);printf("⽤户名已存在，请重新注册！");flag=1;//flag为1时表⽰⽤户名已存在break;//跳出循环}p=p->next;}if(flag)//如果⽤户名已存在{HideCursor(0);//隐藏光标toxy(32,21);printf("1.是\t2.否");while(1){t=getch();if(t=='1')break;else if(t=='2')break;}if(t=='1')//如果继续，则重新注册continue;else if(t=='2')//如果不继续，则回到⾸页{system("cls");//清屏Default();//回到⾸页}}if(strcmp(passWord,againPassword)==0) //如果输⼊的两次密码均正确 {strcpy(p1->userName,userName);strcpy(p1->passWord,passWord);strcpy(_userName,userName);strcpy(_passWord,passWord);p1->isVIP=0;p1->money=0;if(strcmp(userName,"root")==0&&strcmp(passWord,"root")==0)p1->isAdministrator=1;elsep1->isAdministrator=0;toxy(32,16);printf("正在注册....");Sleep(500);break; //跳出循环}else //如果输⼊的两次密码不同{toxy(32,16);printf("正在注册....");Sleep(500);system("cls");toxy(30,8);printf("------------------------------");toxy(30,9);printf("| |");toxy(30,10);printf("|两次密码不⼀致!是否继续注册?|");toxy(30,11);printf("| |");toxy(30,12);printf("| 1.是 2.否 |");toxy(30,13);printf("| |");toxy(30,14);printf("------------------------------");while(1){c=getch();if(c=='1'){system("cls");break;}else if(c=='2'){system("cls");Default();break;}}}}while(1);save_User(p1); //调⽤函数，将p1所指向的内容存储到⽂件中system("cls");toxy(32,10);printf("注册成功！");Sleep(500); //暂停0.5秒toxy(32,12);printf("正在⾃动为您登陆....");Sleep(500);User_Menu(); //注册成功后进⼊主菜单}void User_Order()//点餐{int ID;int number;do{while(1){system("cls");HideCursor(1);int flag=0;pTable T,Thead;Thead=readTableFile();T=Thead;int j=11;toxy(12,6);printf("餐桌列表(按任意键继续)");toxy(2,8);printf("餐桌编号 | 可坐⼈数 | 已坐⼈数");toxy(0,9);printf("--------------------------------------");while(T!=NULL){toxy(6,j);printf("%-10d%-10d%d",T->ID,T->count,T->People); j++;T=T->next;}toxy(38,12);printf("请选择餐桌号：");scanf("%d",&ID);toxy(40,14);printf("请选择⼈数：");scanf("%d",&number);T=Thead;while(T!=NULL){if(T->ID==ID){if((T->count)-(T->People)>=number){toxy(38,16);printf("占座成功！按任意键继续点餐");flag=1;break;}else{toxy(38,16);printf("占座失败！该餐桌座位不够");flag=0;break;}}T=T->next;}if(T==NULL&&flag==0){toxy(38,16);printf("该餐桌编号不存在，请重新输⼊");Sleep(1000);continue;}else if(T!=NULL&&flag==0){toxy(38,17);printf("是否继续 1.是 2.否");while(1){ch=getch();if(ch=='1'||ch=='2')break;}if(ch=='1')continue;else if(ch=='2')break;}else if(flag)break;}if(ch=='2')break;getch();do{system("cls");printf("-----------------");toxy(28,10);printf("1) 主⾷");toxy(28,12);printf("2) 副⾷");toxy(28,14);printf("3) 饮品");toxy(28,16);printf("4）订单");toxy(28,18);printf("5）返回");t=getch();switch(t){case '1':Order_StapleFood();break;case '2':Order_nonStapleFood();break;case '3':Order_DrinkBeverage();break;case '4':Order_Form(ID,number);break;case '5':break;default :break;}if(t=='5')break;}while(1);if(t=='5')break;}while(1);}void Order_StapleFood()//主⾷{char t;do{system("cls");pStapleFood p,head=readStapleFoodFile();pOrder p1;p=head;char foodName[20];int i=8;toxy(10,4);printf("主⾷菜单");toxy(6,6);printf("菜名\t\t\t价格");toxy(0,7);printf("-----------------------------------");while(p!=NULL){toxy(6,i);printf("%-22s%.2f",p->name,p->price);i++;p=p->next;}toxy(40,8);printf("请输⼊您要点的菜名:");scanf("%s",foodName);p=head;while(p!=NULL&&strcmp(p->name,foodName)!=0) {p=p->next;}if(p){p1=(pOrder)malloc(Y);strcpy(p1->name,foodName);p1->price=p->price;num++;if(num==1){orderHead=p1;p2=p1;}else{p2->next=p1;p2=p1;}p2->next=NULL;toxy(40,10);printf("点餐成功！是否继续？1.是 2.否");while(1){if(t=='2')break;}else{toxy(36,10);printf("没有找到这道菜，请检查您输⼊的菜名是否正确！"); Sleep(1500);}}while(1);}void Order_nonStapleFood()//副⾷{char t;do{system("cls");pNon_stapleFood p,head=readNonStapleFoodFile();pOrder p1;p=head;char foodName[20];int i=8;toxy(10,4);printf("副⾷菜单");toxy(6,6);printf("菜名\t\t\t价格");toxy(0,7);printf("-----------------------------------");while(p!=NULL){toxy(6,i);printf("%-22s%.2f",p->name,p->price);i++;p=p->next;}toxy(40,8);printf("请输⼊您要点的菜名:");scanf("%s",foodName);p=head;while(p!=NULL&&strcmp(p->name,foodName)!=0){p=p->next;}if(p){p1=(pOrder)malloc(Y);strcpy(p1->name,foodName);p1->price=p->price;num++;if(num==1){orderHead=p1;p2=p1;}else{p2->next=p1;p2=p1;}p2->next=NULL;toxy(36,10);printf("点餐成功！是否继续？1.是 2.否");while(1){t=getch();if(t=='1')break;else if(t=='2')break;}if(t=='2')break;}else{toxy(36,10);printf("没有找到这道菜，请检查您输⼊的菜名是否正确！"); Sleep(1500);}}while(1);pDrinkBeverage p,head=readDrinkBeverageFile();pOrder p1;p=head;char foodName[20];int i=8;toxy(10,4);printf("饮品菜单");toxy(6,6);printf("菜名\t\t\t价格");toxy(0,7);printf("-----------------------------------");while(p!=NULL){toxy(6,i);printf("%-22s%.2f",p->name,p->price);i++;p=p->next;}toxy(40,8);printf("请输⼊您要点的菜名:");scanf("%s",foodName);p=head;while(p!=NULL&&strcmp(p->name,foodName)!=0){p=p->next;}if(p){p1=(pOrder)malloc(Y);strcpy(p1->name,foodName);p1->price=p->price;num++;if(num==1){orderHead=p1;p2=p1;}else{p2->next=p1;p2=p1;}p2->next=NULL;toxy(36,10);printf("点餐成功！是否继续？1.是 2.否");while(1){t=getch();if(t=='1')break;else if(t=='2')break;}if(t=='2')break;}else{toxy(36,10);printf("没有找到这道菜，请检查您输⼊的菜名是否正确！"); Sleep(1500);}}while(1);}void Order_Form(int ID,int number)//订单{do{system("cls");int i=10;char t;float totalPrice=0;float actualPayment=0;pOrder p=orderHead;pUser q,head;pTable T,Thead;q=head;if(orderHead==NULL){printf("我的订单");toxy(22,8);printf("菜品名称\t\t价格");toxy(20,9);printf("***************************");while(p!=NULL){toxy(22,i);printf("%-18s%.2f",p->name,p->price);i++;totalPrice+=p->price;p=p->next;}head=readUserFile();q=head;toxy(20,i);printf("***************************");while(q!=NULL&&strcmp(q->userName,_userName)!=0) {q=q->next;}if(q){toxy(24,++i);printf("总价： %.2f",totalPrice);if(q->isVIP)actualPayment=totalPrice*0.85;elseactualPayment=totalPrice;toxy(24,++i);printf("实付： %.2f",actualPayment);}toxy(22,++i);printf("1.确认⽀付 2.取消订单 3.返回");while(1){t=getch();if(t=='1'||t=='2'||t=='3')break;}if(t=='1'){Thead=readTableFile();T=Thead;while(T!=NULL&&T->ID!=ID){T=T->next;}toxy(24,++i);printf("正在⽀付....");if(q->money>=actualPayment){q->money-=actualPayment;T->People+=number;Updata_User(head);Updata_Table(Thead);Sleep(1500);system("cls");toxy(24,10);printf("⽀付成功！按任意键返回");orderHead=NULL;getch();break;}else{Sleep(1500);system("cls");toxy(24,10);printf("余额不⾜！按任意键返回");getch();break;}}else if(t=='2'){orderHead=NULL;break;}else if(t=='3')void User_List_Table()//餐桌列表{system("cls");pTable p,head;head=readTableFile();p=head;int i=11;toxy(32,6);printf("餐桌列表(按任意键继续)");toxy(22,8);printf("餐桌编号 | 可坐⼈数 | 已坐⼈数");toxy(20,9);printf("--------------------------------------");while(p!=NULL){toxy(26,i);printf("%-10d%-10d%d",p->ID,p->count,p->People);i++;p=p->next;}getch();}void Apply_VIP_Menu()//办理会员{char t; //t⽤于选择do{system("cls");system("color 75");HideCursor(0);pUser head=readUserFile();//从⽂件中读取⽤户信息，返回⼀个表头地址toxy(32,6);printf("会员办理");toxy(30,8);printf("1) 充值 ");toxy(30,10);printf("2) 办理会员");toxy(30,12);printf("3) 返回");t=getch();switch(t){case '1':Add_money(head);break;case '2':Apply_VIP(head);break;case '3':break;default :break;}if(t=='3')//如果输⼊3，则跳出循环，该函数⽣命周期结束，回到上⼀级菜单break;}while(1);}void Add_money(pUser head)//充值{float money;//输⼊要充值的钱pUser p;p=head;//head为从上⼀级菜单传过来的参数，为⽤户信息链表的头结点while(p!=NULL&&strcmp(p->userName,_userName)!=0)//遍历链表，寻找当前登录账户的信息 {p=p->next;}while(1){system("cls");system("color 76");toxy(32,6);printf("南航餐饮充值中⼼");if(p!=NULL){if(p->isVIP==0)//如果不是会员{toxy(20,8);printf("对不起，您还不是会员，请先办理会员后再来充值！");toxy(32,10);printf("请按任意键返回!");break;}else if(p->isVIP==1)//如果是会员{HideCursor(1);toxy(32,8);printf("请输⼊充值⾦额（⼀次不少于200）：");printf("正在充值....");Updata_User(head);//更新⽤户表toxy(32,10);printf("充值成功 ");toxy(32,12);printf("请按任意键返回!");break;}else//如果充值⾦额⼩于200{toxy(32,10);printf("⼀次⾄少充值200元！");Sleep(1500);continue;}}}}getch();}void Apply_VIP(pUser head)//办理会员{system("cls");system("color 76");pUser p=head;//head为从上⼀级菜单传过来的参数，为⽤户信息链表的头结点char t;float money;toxy(32,6);printf("南航餐饮会员办理中⼼");while(p!=NULL&&strcmp(p->userName,_userName)!=0)//遍历链表，寻找当前登录账户的信息 {p=p->next;}do{if(p!=NULL){if(p->isVIP==1)//如果已经是会员{toxy(20,8);printf("您已是本店尊贵会员，⽆需再次办理！");toxy(32,10);printf("请按任意键返回!");getch();break;}else if(p->isVIP==0)//如果还没办理会员{toxy(30,8);printf("提⽰：");toxy(30,9);printf("1.办理会员⾄少充值500");toxy(30,10);printf("2.冲500送200，冲1000送500");toxy(32,12);printf("是否确认办理会员？");toxy(32,13);printf("1.是\t2.否");while(1){t=getch();if(t=='1')break;else if(t=='2')break;}if(t=='1'){while(1){system("cls");HideCursor(1);toxy(32,10);printf("请输⼊充值⾦额：");scanf("%f",&money);if(money>=500&&money<1000){money+=200;p->money+=money;p->isVIP=1;Updata_User(head);toxy(32,12);}else if(money>=1000){money+=500;p->money+=money;p->isVIP=1;Updata_User(head);toxy(32,12);printf("恭喜，您已成为本店尊贵会员！");toxy(32,14);printf("请按任意键返回主菜单");getch();User_Menu();}else{toxy(32,12);printf("办理会员⾄少充值500");Sleep(2000);}}}else if(t=='2')break;}}}while(1);}void Updata_User(pUser head)//更新⽂件{FILE *fp;pUser p=head->next; //使p指向第⼆个结点fp=fopen("User.txt","w"); //先清空原⽂件内容再将修改后的信息写⼊⽂件if(fp==NULL){printf("cannot open file\n");}if(fwrite(head,M,1,fp)!=1) //将head所指向的数据写⼊fp所指向的⽂件{printf("file write error\n");}fclose(fp); //关闭⽂件fp=fopen("User.txt","a"); // 打开User.txt⽂件，⽅式为追加while(p!=NULL) //p不为空就执⾏循环体{if(fwrite(p,M,1,fp)!=1) //将p所指向的1个⼤⼩为N的数据结构写⼊fp所指向的⽂件{printf("file write error\n");}p=p->next; //使p指向下⼀个结点}fclose(fp); //关闭⽂件}void Amend_passWord()//修改密码{system("cls"); //清屏HideCursor(0); //隐藏光标，看着更舒服pUser p,head;head=readUserFile();do{p=head;char password[18],newpassword[18],t,k,*q1,*q2;int i=0;toxy(34,5); //将光标移动到坐标为（50，5）的位置printf("南航餐饮点餐系统");toxy(34,8);printf("修改密码");toxy(32,10);printf("请输⼊旧密码：");q1=HidePassword();strcpy(password,q1);toxy(32,12);printf("请输⼊新密码：");q2=HidePassword();strcpy(newpassword,q2);while(p!=NULL&&strcmp(p->userName,_userName)!=0)//遍历链表，寻找当前登陆账户的账号 {p=p->next;}if(p!=NULL) //如果p不为空break; //跳出循环}else //如果旧密码输⼊错误{system("cls");toxy(30,8);printf("--------------------------");toxy(30,9);printf("| |");toxy(30,10);printf("| 密码错误！是否继续？ |");toxy(30,11);printf("| |");toxy(30,12);printf("| 1.是 2.否 |");toxy(30,13);printf("| |");toxy(30,14);printf("--------------------------");while(1){t=getch(); //输⼊tif(t=='1'){system("cls");break;}else if(t=='2')User_Menu();}}}}while(1); //永远为真Updata_User(head);//修改密码toxy(32,14);printf("修改成功！正在跳转...");Sleep(500); //暂停0.5秒}void User_Wallet()//我的钱包{system("cls");system("color 78");pUser p,head;head=readUserFile();p=head;while(p!=NULL&&strcmp(p->userName,_userName)!=0) {p=p->next;}if(p!=NULL){toxy(32,10);printf("账户余额为：%.2f",p->money);toxy(32,12);printf("请按任意键返回");}getch();}void Change()//切换账号{system("cls");Default();}void Exit()//退出点餐系统{char t;toxy(30,10);printf("-----------------------");toxy(30,11);printf("| 您确定要退出吗？ |");toxy(30,13);printf("| 1.确定 2.取消 |");toxy(30,14);printf("-----------------------");while(1){t=getch(); //输⼊tswitch(t){case '1':system("cls");toxy(32,10);printf("已安全退出软件");toxy(32,12);printf("谢谢使⽤！");toxy(32,14);printf("by-by^_^");exit(0); break; //终⽌程序case '2':break; //调⽤函数，进⼊菜单default :break;}if(t=='2')break;}}void Administrator_Menu()//管理员菜单{char t;//⽤于选择菜单选项do{system("cls");HideCursor(0); //隐藏光标system("color 74");toxy(32,3);printf("南航餐饮管理系统！");toxy(32,4);printf("当前管理员：%s",_userName);toxy(30,5);printf("*********************");toxy(32,7);printf("| 1.菜品信息 |");toxy(32,9);printf("| 2.餐桌管理 |");toxy(32,11);printf("| 3.查看⽤户 |");toxy(32,13);printf("| 4.本店会员 |");toxy(32,15);printf("| 5.设置管理员 |");toxy(32,17);printf("| 6.修改密码 |");toxy(32,19);printf("| 7.切换账号 |");toxy(32,21);printf("| 8.退出系统 |");t=getch();//不回显函数，输⼊⼀个值switch(t){case '1':Food();break;case '2':Table();break;case '3':Check_User();break;case '4':All_VIP();break;case '5':Setup_administrator();break;case '6':Amend_passWord();break;case '7':Change();break;case '8':Exit();break;default :break;}}while(1);//永远为真}void Administrator_Login()//管理员登录{char *q,t,c;//q指针⽤于接收 *HidePassword()函数返回的指向密码的指针，t和c均⽤于选择 pUser p=readUserFile();//从⽂件中读取⽤户信息，返回⼀个表头地址do{HideCursor(1);//显⽰管光标system("cls");//清屏system("color 73");//设置颜⾊toxy(28,8);printf("南航餐饮管理员登录界⾯");toxy(26,9);printf("-----------------------------");toxy(32,11);printf("⽤户名:");toxy(32,13);printf("密码:");toxy(40,11);scanf("%s",_userName);toxy(40,13);q=HidePassword();//输⼊密码strcpy(_passWord,q);//将获得的密码复制给_passWord[]数组。
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