本篇文章给大家分享的是有关C语言中怎么实现一个外卖管理系统，小编觉得挺实用的，因此分享给大家学习，希望大家阅读完这篇文章后可以有所收获，话不多说，跟着小编一起来看看吧。
重点内容
三端登录 ：分别为管理员，用户以及店主；两端注册，分别为用户以及店铺，其中店铺的注册成功需要得到管理员的审核。
管理员端可以查看店铺信息，店铺信息修改（分为增删改查），处理申请店铺，和修改本人信息。 用户端分为用户相关（为用户本人对自己信息的操作），查看订单，查看菜品，购买菜品，以及订单排序。 管理员端为增添菜品，删除菜品，修改菜品，查看菜品以及业绩查看（统计总订单与总收入）。
另外：
1. 店家注册需要的到管理员的认证，认证通过之后才可登录 2. 密码修改需要输入旧的密码，三次错误可以找回密码，输入手机号，若手机号匹配得当，则可产生三位数的随机验证码，输入验证码即可修改。 3. 对于已超过三分钟的订单不能修改，因为已经配送 4. 限制了用户的余额，当购买时余额不足时，需要进行账户的充值，而购买结束后，账户的余额也会相应的减少
以下为功能模块图：
以下为函数调用关系图：
以下为整个代码：
#include<stdio.h>#include<stdlib.h>#include<string.h> #include<windows.h>#include<time.h>#include<conio.h>void choose();//建立关于店铺的结构体 typedef struct shop{ char name[20]; char phone[20]; char address[30]; char password[20]; struct shop *next;}shop,*link_shop;//建立关于订单的结构体 typedef struct food{ char name[20]; int type; int amount; int price; int total; char shop[20]; char yonghu[20]; char leibie[20]; struct food *next; }food,*link_food;//建立关于用户的结构体typedef struct user{ char name[20]; char delivery[39]; char password[15]; char number[15]; int score; struct user *next;}user,*link_user;typedef struct money{ char person[20]; char card[25]; char mima[20]; struct money *next;}money,*link_money;char yh[20];//用户设置全局变量 char dp[20];//店铺设置全局变量 time_t start,end;//函数声明void foodwrite(link_food LF);void shopwrite1(link_shop LS);void dingdanwrite(link_food LF);void user_moneywrite(link_user LM);void welcome(){ int i=0; char a[52]="▲▼WELCOME TO RESTAURANT MANAGEMENT SYSTEM▲▼"; //system("color 0a"); printf("\n\n\n\n\t\t"); while(a[i]) { printf("%c",a[i]); Sleep(50); i++; } printf("\n\n\n\n\t\t");}void Exit(){ int i=0; system("cls"); char a[20]="LOVE you,byebye^_^"; system("color 03"); printf("\n\n\n\t\t\t"); while(a[i]) { printf("%c",a[i]); Sleep(100); i++; }}void ME(){ system("color 0b"); printf("\n\n\n\t\t☆★ W E L C O M E ☆★\n\n\t这里是外卖管理系统，请选择接下来的操作："); printf("\n\n\t\t\t1.登陆"); printf("\t\t\t2.注册\t\t\t0.退出\n"); }//主菜单（登陆或者注册） void MENU(){ printf("\n\n\n\n\t\t\t\t\t================================\n"); printf("\t\t\t\t\t 外 卖 管 理 系 统 \n"); printf("\t\t\t\t\t 1.管理员登陆 \n"); printf("\t\t\t\t\t 2.用户登录 \n"); printf("\t\t\t\t\t 3.店家登陆 \n"); printf("\t\t\t\t\t 0.返回上一级 \n"); printf("\t\t\t\t\t================================\n");}//管理员选项 void MENU1(){ system("color 0f"); printf(" 温馨小提示：按5可以清屏哦^-^\n"); printf("\n\n\t\t\t\t\t1.查看店铺信息▲\n"); printf("\t\t\t\t\t--------------\n"); printf("\t\t\t\t\t2.店铺信息修改▼\n"); printf("\t\t\t\t\t--------------\n"); printf("\t\t\t\t\t3.处理申请店铺▲\n"); printf("\t\t\t\t\t--------------\n"); printf("\t\t\t\t\t4.修改本人信息▼\n"); printf("\t\t\t\t\t--------------\n"); printf("\t\t\t\t\t0.返回上一级 ▲\n");}//用户选项 void MENU2(){ system("color 0f"); printf("\n\n\t\t\t\t 1.用户相关 ▲\t\t\t 5.购买菜品 ▼\n"); printf("\t\t\t\t---------------\t\t\t---------------\n"); printf("\t\t\t\t 2.查看订单 ▲\t\t\t 6.订单排序▼\n"); printf("\t\t\t\t---------------\t\t\t---------------\n"); printf("\t\t\t\t 3.查看菜品 ▲\t\t\t 0.返回上级 ▼\n"); printf("\t\t\t\t---------------\t\t\t---------------\n"); printf("\t\t\t\t 4.修改订单 ▲\n");}//店主选项 void MENU3(){ system("color 0f"); printf("\n\n\n\t\t\t ________ Shop Version _______\n"); printf("\t\t\t| |\n"); printf("\t\t\t| 1.添加菜品 |\n"); printf("\t\t\t| 2.修改菜品 |\n"); printf("\t\t\t| 3.删除菜品 |\n"); printf("\t\t\t| 4.查看菜品 |\n"); printf("\t\t\t| 5.查看业绩 |\n"); printf("\t\t\t| 0.返回上一级 |\n"); printf("\t\t\t|_____________________________|\n");}//建立关于单链表void *creatf(){ int i=0,n; link_food LF; food *s,*r; char a[10]; //srand((unsigned)time(NULL));//产生随机数的种子 LF=(food *)malloc(sizeof(food)); LF->next=NULL; r=LF; while(1) { printf("请输入菜的名称："); scanf("%s",a); if(strcmp(a,"0")!=0) { s=(food *)malloc(sizeof(food)); printf("请输入菜的单价："); scanf("%d",&s->price); printf("请输入菜的类别"); scanf("%s",s->leibie); strcpy(s->name,a); s->total=(s->amount)*(s->price); r->next=s; s->next=NULL; r=s; } else break; } foodwrite(LF); } shop *creats(){ char a[30],b[20],c[15],d[20]; link_shop LS; shop *s,*r; LS=r=(shop *)malloc(sizeof(shop)); LS->next=NULL; r=LS; while(1) { printf("请输入店铺信息:\n"); printf("\t\t● 店铺名称："); scanf("%s",a); printf("\n\t\t● 店铺电话："); scanf("%s",b); if(strcmp(b,"0")!=0) { printf("\n\t\t● 店铺地址："); scanf("%s",c); printf("\n\t\t● 店铺密码："); scanf("%s",d); s=(shop *)malloc(sizeof(shop)); strcpy(s->name,a); strcpy(s->phone,b); strcpy(s->address,c); strcpy(s->password,d); r->next=s; s->next=NULL; r=s; } else break; } return LS; }void Outputshop(link_shop Ls){ int n=0; shop *p,*u; p=Ls->next; system("cls"); printf("入驻的商家如下：\n"); printf("\t\t\t\t-------------------------------------------\n"); printf("\t\t\t\t店铺名称\t店铺电话\t店铺地址\n"); printf("\t\t\t\t-------------------------------------------\n"); while(p) { printf("\t\t\t\t%8s\t%8s\t%7s\n",p->name,p->phone,p->address); printf("\t\t\t\t-------------------------------------------\n"); p=p->next; } for(u =Ls->next; u != NULL;u = u->next) n++; printf("\t\t\t\t合计\t\t\t\t%d个\n",n); printf("\t\t\t\t-------------------------------------------\n");}void Outputfood(link_food LF){ food *s; s=LF->next; int sum=0; printf("订单如下：\n"); printf("\t----------------------------------------------------------------------------------------------------\n"); printf("\t菜名\t\t数量/份\t\t单价/元\t\t总价/元\t\t店铺\t\t订单号\t\t用户名\n"); printf("\t----------------------------------------------------------------------------------------------------\n"); for(s=LF->next;s!=NULL;s=s->next) { if(strcmp(s->yonghu,yh)==0) { printf("\t%-8s\t%-8d\t%-8d\t%-8d\t%-10s\t%-10d\t%s\n",s->name,s->amount,s->price,s->total,s->shop,s->type,s->yonghu); printf("\t----------------------------------------------------------------------------------------------------\n"); sum=sum+s->total; } } printf("\t累计输出/元\t\t\t\t\t\t\t%d\n",sum); printf("\t----------------------------------------------------------------------------------------------------\n"); if(sum==0) { printf("○ 您还没有订单呢，快去购买吧 φ(>ω<*) "); printf("\n\t\t\t\t\t->"); Sleep(1000); printf("->"); Sleep(1000); printf("->"); Sleep(1000); system("cls"); MENU2(); return; }}void outputfood(link_food LF){ food *p; p=LF->next; printf("\n\t\t\t 菜 谱 "); printf("\n\t\t\t--------------------------------------------------\n"); printf("\t\t\t菜名 菜价 店铺 菜系\n"); printf("\t\t\t---------------------------------------------------\n"); while(p) { printf("\t\t\t%-13s%-12d%-14s%s\n",p->name,p->price,p->shop,p->leibie); printf("\t\t\t---------------------------------------------------\n"); p=p->next; }}//充值user* addmoney(user *u){ int n; char y; char a[20]; FILE *fp; link_money LY; money *p,*r; printf("您账户里的余额为：%d",u->score); printf("是否充值？Y/else"); fflush(stdin);//清除缓存 y=getchar(); if(y=='Y') { fp=fopen("yue.txt","rt"); LY=r=(money *)malloc(sizeof(money)); LY->next=NULL; while(!feof(fp)) { p=(money *)malloc(sizeof(money)); fscanf(fp,"%s %s %s\n",p->person,p->card,p->mima); p->next=NULL; r->next=p; r=p; } fclose(fp); p=LY->next; while(1) { if(strcmp(yh,p->person)==0) { break; } else p=p->next; } printf("充值的钱数？"); scanf("%d",&n); printf("请输入支付密码："); scanf("%s",a); if(strcmp(p->mima,a)==0) { u->score=(u->score+n); printf("已充值"); } else printf("\t\t× 密码错误，充值失败"); } else printf("已放弃充值"); return u; } //按工号排序void name_sort(link_shop LS) { int i,j,n; n = 0; //记录店铺总数； shop *u,*q,*p; for(u =LS->next; u != NULL;u = u->next) n++; //采用冒泡法对各个节点按姓名升序 for(i=1;i<=n;i++) { u =LS; for(j=0;j<n-i;j++) { p = u->next; q = p->next; if(strcmp(p->name,q->name) > 0 || strcmp(p->name,q->name) == 0) { u->next = q; p->next = q->next; q->next = p; } u = u->next; } } printf("\t排序后店铺信息\n"); Outputshop(LS); return;}void address_sort(link_shop LS) { int i,j,n; n = 0; //记录店铺总数； shop *u,*q,*p; for(u =LS->next; u != NULL;u = u->next) n++; //采用冒泡法对各个节点按地址升序 for(i=1;i<=n;i++) { u =LS; for(j=0;j<n-i;j++) { p = u->next; q = p->next; if(strcmp(p->address,q->address) > 0 || strcmp(p->address,q->address) == 0) { u->next = q; p->next = q->next; q->next = p; } u = u->next; } } printf("\t\t\t\t地址排序后店铺信息\n"); Outputshop(LS); return;}void dingdan_name_sort(link_food LF) //按订单食物名称排序 { int i,j,n; n = 0; //记录店铺总数； food *u,*q,*p; for(u =LF->next; u != NULL;u = u->next) n++; //采用冒泡法对各个节点按姓名升序 for(i=1;i<=n;i++) { u =LF; for(j=0;j<n-i;j++) { p = u->next; q = p->next; if(strcmp(p->name,q->name) > 0 || strcmp(p->name,q->name) == 0) { u->next = q; p->next = q->next; q->next = p; } u = u->next; } } Outputfood(LF); return;}void dingdan_total_sort(link_food LF) //按订单总价从高到低排序 { int i,j,n; n = 0; //记录店铺总数； food *u,*q,*p; for(u =LF->next; u != NULL;u = u->next) n++; //采用冒泡法对各个节点按姓名升序 for(i=1;i<=n;i++) { u =LF; for(j=0;j<n-i;j++) { p = u->next; q = p->next; if(p->total>q->total) { u->next = q; p->next = q->next; q->next = p; } u = u->next; } } Outputfood(LF); return;}void dingdandelete(link_food Lf){ food *p,*n; p=Lf; n=p->next; int m; char a; printf("请输入你所想删除的订单序号："); scanf("%d",&m); while(n) { if(m==n->type) { if(strcmp(n->shop,dp)==0) { p->next=n->next; //foodwrite(Lf); dingdanwrite(Lf); break; } else printf("不好意思，您没有权限删除\n"); break; } else { p=p->next; n=n->next; } }}food *dingdanread(){ FILE *fp; link_food LF,r,s; fp=fopen("dingdan.txt","rt"); if(fp==NULL) { printf("查看订单失败"); return 0; } LF=r=(food *)malloc(sizeof(food)); r->next=NULL; while(!feof(fp)) { s=(food *)malloc(sizeof(food)); fscanf(fp,"%s %d %d %d %s %d %s\n",s->name,&s->amount,&s->price,&s->total,s->shop,&s->type,s->yonghu); r->next=s; s->next=NULL; r=s; } return LF;}void scorefind(link_food LF){ int sum=0; food *p; p=LF->next; system("cls"); printf("\n\n\n\t\t\t产生的订单如下:\n"); printf(" ----------------------------------------------------------------------------------------------------\n"); printf(" 菜品名称 \t菜品数量\t菜品单价\t菜品总价\t店铺名称\t订单号 \t\t用户名\n"); printf(" ----------------------------------------------------------------------------------------------------\n"); while(p) { if(strcmp(p->shop,dp)==0) { printf(" %7s%14d%15d%16d%16s%15d%18s\n",p->name,p->amount,p->price,p->total,p->shop,p->type,p->yonghu); printf(" ----------------------------------------------------------------------------------------------------\n"); sum=sum+p->total; } p=p->next; } printf(" 合计/元：\t\t\t\t\t\t\t累计收入%d\n",sum); printf(" ----------------------------------------------------------------------------------------------------\n"); if(sum==0) printf("\t\t● 您店里的菜还没有人购买哦，应该反思啦\n");}food * foodread()//读取 { link_food LF; food *s,*r; LF=r=(food *)malloc(sizeof(food)); LF->next=NULL; FILE *fp; fp=fopen("food.txt","rt"); if(fp==NULL) { printf("不能打开此文件"); exit(1); } while(!feof(fp))//判断文件指针是否处于文件结束位置，若是，返回1，非，返回0 { s=(food *)malloc(sizeof(food)); fscanf(fp,"%s %d %s %s\n",s->name,&s->price,s->shop,s->leibie); r->next=s; s->next=NULL; r=s; } fclose(fp); return LF; }money * moneyread()//读取 { link_money LM; money *s,*r; LM=r=(money *)malloc(sizeof(money)); LM->next=NULL; FILE *fp; fp=fopen("yue.txt","rt"); if(fp==NULL) { printf("不能打开此文件"); exit(1); } while(!feof(fp))//判断文件指针是否处于文件结束位置，若是，返回1，非，返回0 { s=(money *)malloc(sizeof(money)); fscanf(fp,"%s %s %s\n",s->person,s->card,s->mima); r->next=s; s->next=NULL; r=s; } fclose(fp); return LM; }shop * shopread(){ link_shop LS; shop *s,*r; LS=r=(shop *)malloc(sizeof(shop)); r->next=NULL; FILE *fp; fp=fopen("shop.txt","rt"); if(fp==NULL) { printf("不能打开此文件"); exit(1); } while(!feof(fp))//判断文件指针是否处于文件结束位置，若是，返回1，非，返回0 { s=(shop *)malloc(sizeof(shop)); s->next=NULL; fscanf(fp,"%s %s %s %s\n",s->name,s->phone,s->address,s->password); r->next=s; r=s; } fclose(fp); return LS; }user * userread(){ link_user LU; user *s,*r; LU=r=(user *)malloc(sizeof(user)); r->next=NULL; FILE *fp; fp=fopen("users.txt","rt"); if(fp==NULL) { printf("不能打开此文件"); exit(1); } while(!feof(fp))//判断文件指针是否处于文件结束位置，若是，返回1，非，返回0 { s=(user *)malloc(sizeof(user)); s->next=NULL; fscanf(fp,"%s %s %s %s %d\n",s->name,s->delivery,s->password,s->number,&s->score); r->next=s; r=s; } fclose(fp); return LU; } void deleteshop(link_shop LS){ int i=0; shop *p,*q; p=LS; q=p->next; char m[20]; char a; printf("请输入你所想删除的店铺名称或者电话："); scanf("%s",m); while(q) { if(strcmp(m,q->name)==0||strcmp(m,q->phone)==0) { i++; p->next=q->next; shopwrite1(LS); return; } else { p=p->next; q=q->next; } } if(i==0) { printf("没有此店铺，无法删除\n"); return; }}void deletedingdan(link_food Lf){ food *p,*n; p=Lf; n=p->next; int m,i=0; char a; printf("请输入你所想删除的订单号："); scanf("%d",&m); while(n) { if(n->type==m) { if(strcmp(n->yonghu,yh)==0) { p->next=n->next; i++; foodwrite(Lf); } else printf("不好意思，您没有权限删除\n"); break; } else { p=p->next; n=n->next; } } if(i==0) { printf("\t没有此订单，无法删除\n"); return; }}void purchase(){ link_food Lf; money *LM,*mo; user *lu,*us; FILE *fp; char a[20],b[20],mi[20]; char y; int i=0; printf("\t\t◇您想吃啥呢？"); scanf("%s",a); Lf=foodread(); food *p; p=Lf->next; srand((unsigned)time(NULL));//订单号的种子 while(p!=NULL) { if(strcmp(p->name,a)==0||strcmp(p->leibie,a)==0) { // printf("%s\t%d\t%s\n",p->name,p->price,p->shop); i++; } p=p->next; } if(i==0) { printf("\t\t\t×不好意思，还没有此菜呢\n"); system("pause"); system("cls"); MENU2(); return; } else { p=Lf->next; printf("\n\t\t\t--------------------------------------------------\n"); printf("\t\t\t菜名 菜价 店铺 菜系\n"); printf("\t\t\t---------------------------------------------------\n"); while(p) { if(strcmp(p->leibie,a)==0||strcmp(p->name,a)==0) { printf("\t\t\t%-13s%-12d%-14s%s\n",p->name,p->price,p->shop,p->leibie); printf("\t\t\t---------------------------------------------------\n"); } p=p->next; } } printf("\t\t◇请输入要购买的店铺："); scanf("%s",b); lu=userread(); us=lu->next; while(us) { if(strcmp(yh,us->name)==0) break; else us=us->next; }//找出要购买的用户信息 LM=moneyread(); mo=LM->next; i=0; while(mo) { if(strcmp(yh,mo->person)==0) { i++; break; } else mo=mo->next; }//找出用户的银行卡信息 if(i==0) { printf("\t\t× 您还没有绑定银行卡哦，不能购买的"); return; } p=Lf->next; i=0; while(p) { if(strcmp(p->name,a)==0||strcmp(p->leibie,a)==0) { if(strcmp(p->shop,b)==0) { printf("\t\t◇请输入要购买的数量"); scanf("%d",&p->amount); if(p->amount!=0) { i++; p->total=(p->amount)*(p->price); p->type=rand()%900+100; if((us->score)<p->total) { printf("\t\t× 您的账号余额不足，请先充值\n"); system("pause"); system("cls"); MENU2(); return; } printf("\t\t●确认购买？Y/else"); fflush(stdin); y=getchar(); if(y=='Y') { printf("请输入支付密码:"); scanf("%s",mi); if(strcmp(mi,mo->mima)==0) { fp=fopen("dingdan.txt","at"); if(fp==NULL) printf("\t\t\t\t×购买失败\n");//因文件无法打开而失败 else { fprintf(fp,"%s %d %d %d %s %d %s\n",p->name,p->amount,p->price,p->total,p->shop,p->type,yh); fclose(fp); us->score=(us->score)-(p->total); user_moneywrite(lu); printf("\t\t\t\t√购买成功，请耐心等待配送\n"); start = time(NULL);//计时 system("pause"); system("cls"); MENU2(); return; } } else { printf("\t\t× 密码错误，购买失败"); system("pause"); system("cls"); MENU2(); return; } } else { printf("\t\t\t×已放弃购买"); system("pause"); system("cls"); MENU2(); return; } } else { printf("\t\t\t×请输入正确的数量"); system("pause"); system("cls"); MENU2(); return; } } } p=p->next; } if(i==0) { printf("\t\t×请输入表中的店铺名称哦\n"); system("pause"); system("cls"); MENU2(); }}void foodwrite(link_food LF)//保存 { FILE *fp; food *p; char a; printf("确认保存？(Y/else)"); scanf("%*c%c",&a); if(a=='Y') { fp=fopen("food.txt","at"); if(fp==NULL) printf("错误！无法打开"); for(p=LF->next;p!=NULL;p=p->next) fprintf(fp,"%s %d %s %s\n",p->name,p->price,dp,p->leibie); printf("修改成功\n"); fclose(fp); return; } else printf("已放弃修改"); } void foodwrite1(link_food LF) { FILE *fp; food *p; char a; printf("确认保存？(Y/else)"); scanf("%*c%c",&a); if(a=='Y') { fp=fopen("food.txt","wt"); if(fp==NULL) printf("错误！无法打开"); for(p=LF->next;p!=NULL;p=p->next) fprintf(fp,"%s %d %s %s\n",p->name,p->price,p->shop,p->leibie); printf("修改成功\n"); fclose(fp); return; } else printf("已放弃修改"); }// void foodwrite2(link_food LF)// {// FILE *fp;// food *p;// char a;// printf("确认保存？(Y/else)");// scanf("%*c%c",&a);// if(a=='Y')// {// fp=fopen("food.txt","wt");// if(fp==NULL)// printf("错误！无法打开");// for(p=LF->next;p!=NULL;p=p->next)// fprintf(fp,"%s %d %s %s\n",p->name,p->price,p->shop,p->leibie);// printf("修改成功\n");// fclose(fp);// return;// }// else// printf("已放弃修改");// } void dingdanwrite(link_food LF) { FILE *fp; food *p; char a; printf("确认保存？(Y/else)"); scanf("%*c%c",&a); if(a=='Y') { fp=fopen("dingdan.txt","wt"); if(fp==NULL) printf("错误！无法打开"); for(p=LF->next;p!=NULL;p=p->next) fprintf(fp,"%s %d %d %d %s %d %s\n",p->name,p->amount,p->price,p->total,p->shop,p->type,p->yonghu); printf("修改成功\n"); fclose(fp); return; } else printf("已放弃修改"); }void shopwrite1(link_shop LS) { FILE *fp; shop *p; char a; printf("确认保存？(Y/else)"); scanf("%*c%c",&a); if(a=='Y') { fp=fopen("shop.txt","wt"); if(fp==NULL) printf("错误！无法打开"); for(p=LS->next;p!=NULL;p=p->next) fprintf(fp,"%s %s %s %s\n",p->name,p->phone,p->address,p->password); printf("保存成功\n"); fclose(fp); return; } else printf("已放弃"); } void shopwrite2(link_shop LS) { FILE *fp; shop *p; char a; printf("是否将信息保存至文件里？(Y/else)"); scanf("%*c%c",&a); if(a=='Y') { fp=fopen("shop.txt","at"); if(fp==NULL) printf("错误！无法打开"); for(p=LS->next;p!=NULL;p=p->next) fprintf(fp,"%s %s %s\n",p->name,p->phone,p->address); printf("修改成功\n"); fclose(fp); return; } else printf("已放弃修改"); } void userwrite(link_user LU) { FILE *fp; user *p; char a;// printf("请确认？(Y/else)");// scanf("%*c%c",&a);// if(a=='Y')// { fp=fopen("users.txt","wt"); if(fp==NULL) printf("错误！无法打开"); for(p=LU->next;p!=NULL;p=p->next) fprintf(fp,"%s %s %s %s %d\n",p->name,p->delivery,p->password,p->number,p->score); printf("操作成功\n"); fclose(fp); return;// } //else //printf("已放弃注册"); } void user_moneywrite(link_user LM) { FILE *fp; user *p; char a;// printf("是否将信息保存至文件里？(Y/else)");// scanf("%*c%c",&a);// if(a=='Y')// { fp=fopen("users.txt","wt"); if(fp==NULL) printf("错误！无法打开"); for(p=LM->next;p!=NULL;p=p->next) fprintf(fp,"%s %s %s %s %d\n",p->name,p->delivery,p->password,p->number,p->score); //printf("注册成功\n"); fclose(fp); //return;// } //else //printf("已放弃注册"); } void userwrite2(link_user LU) { FILE *fp; user *p; char a; printf("是否将信息保存至文件里？(Y/else)"); scanf("%*c%c",&a); if(a=='Y') { fp=fopen("users.txt","at"); if(fp==NULL) printf("错误！无法打开"); for(p=LU->next;p!=NULL;p=p->next) fprintf(fp,"%s %s %s %s %d\n",p->name,p->delivery,p->password,p->number,p->score); printf("注册成功\n"); fclose(fp); return; } else printf("已放弃注册"); }void increaseshop(link_shop LS){ char a[30],b[20],c[15],d[20]; shop *s; printf("请输入你所想加入的店铺信息：\n"); printf("\t\t● 店铺名称："); scanf("%s",a); printf("\n\t\t● 店铺电话："); scanf("%s",b); printf("\n\t\t● 店铺地址："); scanf("%s",c); printf("\n\t\t● 店铺密码："); scanf("%s",d); if(strcmp(a,"0")!=0) { s=(shop *)malloc(sizeof(shop)); strcpy(s->name,a); strcpy(s->phone,b); strcpy(s->address,c); strcpy(s->password,d); } s->next=LS->next; LS->next=s; shopwrite1(LS); }void shopfind(link_shop LS){ shop *p; char E[20]; p=LS->next; printf("请输入店铺的名称："); scanf("%s",E); while(strcmp(p->name,E)!=0&&(p->next)!=NULL) { p=p->next; } if((p->next)==NULL) { printf("没有此店铺"); return; } printf("您所查询的店铺信息为：\n名称\t电话\t地址\n"); printf("%s %s %s",p->name,p->phone,p->address);} void registerdeal(){ int q; FILE *fp; char y; link_shop head; shop *r,*p; head=r=(shop *)malloc(sizeof(shop)); r->next=NULL; fp=fopen("shenqing.txt","rt"); if(fp==NULL) { printf("发生错误，无法打开文件"); return; } if((y=fgetc(fp))==EOF) { printf("目前没有需要处理的信息\n"); system("pause"); system("cls"); MENU1(); return; } else { while(!feof(fp)) { p=(shop *)malloc(sizeof(shop)); fscanf(fp," %s %s %s %s \n",p->name,p->phone,p->address,p->password); r->next=p; p->next=NULL; r=p; } for(p=head->next;p!=NULL;p=p->next) printf("%s %s %s\n",p->name,p->phone,p->address); printf("是否同意注册？Y/else"); scanf("%*c%c",&y); if(y=='Y') { fp=fopen("shop.txt","at"); if(fp==NULL) printf("文件不存在，打开错误\n"); for(p=head->next;p!=NULL;p=p->next) fprintf(fp,"% s %s %s %s \n",p->name,p->phone,p->address,p->password); fclose(fp); } } printf("处理成功"); fp=fopen("shenqing.txt","wt"); fclose(fp);}void MENU1_choose(){ int n,m,q; char a[20],b[20],c[20],d[20]; char y; FILE *fp,*fa; shop *p; shop sq; link_shop LS; link_user LU; LS=shopread(); while(1) { printf("请选择你想所想进行的选项:\n"); scanf("%d",&n); if(n==1) { Outputshop(LS); printf("是否进行排序？Y/else"); fflush(stdin); y=getchar(); if(y=='Y') { system("cls"); printf("\n\n\n\t\t\t●1.按店铺名称排序\n"); printf("\t\t\t●2.按店铺地址排序\n"); scanf("%d",&m); if(m==1) name_sort(LS); if(m==2) address_sort(LS); printf("1.退出\t2.返回"); scanf("%d",&m); if(m==1) exit(0); else { system("cls"); MENU1(); continue; } } else { printf("已放弃排序\n"); system("cls"); MENU1(); } } if(n==2) { system("cls"); printf("\n\n\n\t\t\t☆【1】删除店铺\n"); printf("\t\t\t☆【2】增加店铺\n"); printf("\t\t\t☆【3】输入店铺\n"); printf("\t\t\t☆【0】返回上一级\n"); printf("\n\t\t请选择将要进行的操作：\n"); //二级 while(1) { scanf("%d",&m); if(m==1) deleteshop(LS); if(m==2) increaseshop(LS); if(m==3) { LS=creats(); shopwrite1(LS); } if(m==4) shopfind(LS); if(m==0) { system("cls"); MENU1(); break; } } } if(n==3) registerdeal();//注册处理以及投诉处理函数 if(n==4) { //LU=userread(); system("cls"); printf("\n\t请选择所想进行的选项：\n\n"); printf("\t● ○ ● ○ ● ○ ●\n"); printf("\t 1.查看个人信息 \n"); printf("\t○ 2.修改个人信息 ○\n"); printf("\t 0.返回上一级 \n");//二级 printf("\t● ○ ● ○ ● ○ ●\n"); while(1) { scanf("%d",&m); if(m==1) { char d[20]; fa=fopen("admin.txt","rt"); fscanf(fa,"%s %s %s %s",a,b,c,d); fclose(fa); printf("\n\t\t地区\t姓名\t电话号码\n"); printf("\t\t%s\t%s\t%s\n",a,b,d); } if(m==2) { system("cls"); printf("\n 温馨提示，按0返回哦(〃'▽'〃)\n"); printf("\n\t\t● ○ ● ○ ● ○ ●\n"); printf("\t\t 1.修改姓名 \n"); printf("\t\t○ 2.修改地址 ○\n"); printf("\t\t 3.修改密码 \n");//三级 printf("\t\t● ○ ● ○ ● ○ ●\n"); scanf("%d",&q); if(q==1) { printf("请输入新的姓名：\n"); scanf("%s",b); } if(q==2) { printf("请输新的地址：\n"); scanf("%s",a); } if(q==3)//修改密码，含找回密码 { int j=0,h; char f[20],e[20]; fa=fopen("admin.txt","rt"); fscanf(fa,"%s %s %s %s",a,b,c,d); printf("您需要输入旧的密码：\n"); scanf("%s",f); while(strcmp(f,c)!=0) { j++; printf("\t\t×您的密码有误,请重新输入："); scanf("%s",f); if(j==2) { printf("\t\t×您已经连续输错三次，按1找回密码，其他数字键返回:"); scanf("%d",&j); if(j==1) { printf("请输入您的电话号码:"); scanf("%s",e); if(strcmp(e,d)==0) { srand((unsigned)time(NULL)); j=rand()%900+100; fp=fopen("yanzheng.txt","wt"); //fscanf(fp,"%d\n",&j); fprintf(fp,"%d\n",j); fclose(fp); printf("我们已经发送验证码到您的手机，请输入:"); scanf("%d",&h); if(h==j) { printf("\t\t√请重新设置您的密码:"); scanf("%s",c); break; } else { printf("\t\t×验证码错误\n"); break; } } else { printf("\t\t×找回密码失败\n"); break; } } else { system("cls"); MENU(); return; } } } if(strcmp(c,f)==0) { printf("请输入新的密码：\n"); scanf("%s",c); } } if(q==1||q==2||q==3) { printf("是否保存？Y/else"); fflush(stdin); y=getchar(); if(y=='Y') { fa=fopen("admin.txt","wt"); fprintf(fa,"%s %s %s %s",a,b,c,d); fclose(fa); printf("\t\t√保存成功"); } else printf("\t\t×已放弃修改"); system("pause"); system("cls"); printf("\n\t请选择所想进行的选项：\n\n"); printf("\t● ○ ● ○ ● ○ ●\n"); printf("\t 1.查看个人信息 \n"); printf("\t○ 2.修改个人信息 ○\n"); printf("\t 0.返回上一级 \n");//二级 printf("\t● ○ ● ○ ● ○ ●\n"); continue; } if(q==0) { system("cls"); printf("\n\t请选择所想进行的选项：\n\n"); printf("\t● ○ ● ○ ● ○ ●\n"); printf("\t 1.查看个人信息 \n"); printf("\t○ 2.修改个人信息 ○\n"); printf("\t 0.返回上一级 \n");//二级 printf("\t● ○ ● ○ ● ○ ●\n"); continue; } } if(m==0) { system("cls"); MENU1(); break; } } } if(n==5) { system("cls"); MENU1(); } if(n==0) { system("cls"); MENU(); break; } if(n!=1&&n!=2&&n!=3&&n!=4&&n!=5&&n!=0) { printf("\t\t∷"); Sleep(400); printf("∷"); Sleep(400); printf("∷"); Sleep(400); printf("您需要输入菜单上的数字哦\n"); } }}void MENU2_choose(){ int n,m,q,i=0; char a[20],b[20]; char y; FILE *fp; user *u; food *p,*s,*r; link_food LF,Lf; LF=foodread(); link_user LU;// user user; while(1) { scanf("%d",&n); switch(n) { case 1: system("cls"); printf("\n\n\t\t\t请选择需要进行的选项:\n\n"); printf("\t\t\t--------------------\n"); printf("\t\t\t 用 户 相 关\n"); printf("\t\t\t--------------------\n"); printf("\t\t\t● 1.修改用户名\n"); printf("\t\t\t● 2.修改密码\n"); printf("\t\t\t● 3.修改收货地址\n"); printf("\t\t\t● 4.修改电话号\n"); printf("\t\t\t● 5.查看个人信息\n"); printf("\t\t\t● 6.充值钱包\n"); printf("\t\t\t● 0.返回上一级\n"); LU=userread(); u=LU->next; while(1) { if(strcmp(yh,u->name)==0) break; else u=u->next; } while(1) { scanf("%d",&m); if(m==1) { printf("请输入新的用户名：\n"); scanf("%s",u->name); } if(m==2) { printf("您需要输入旧的密码：\n"); scanf("%s",b); while(strcmp(u->password,b)!=0) { printf("密码错误，请重新输入\n"); scanf("%s",b); i++; if(i==2) { printf("您已经输错三次，请5分钟后再试"); continue; } } printf("请输入新的密码："); scanf("%s",u->password); } if(m==3) { printf("请输入新的收货地址："); scanf("%s",u->delivery); } if(m==4) { printf("请输入新的收货地址"); scanf("%s",u->number); } if(m==1||m==2||m==3||m==4) userwrite(LU); if(m==5) { printf("您的信息为：\n"); printf("姓名\t收获地址\t联系方式\n"); printf("%s\t%s\t%s\n",u->name,u->delivery,u->number); } if(m==6) { u=addmoney(u); userwrite(LU); } if(m==0) { system("cls"); MENU2(); break; } } break; case 2: LF=dingdanread(); Outputfood(LF); break; case 3: LF=foodread(); system("cls"); outputfood(LF); p=LF->next; printf("\t● 按1购买，其他数字返回\t"); scanf("%d",&q); if(q==1) { purchase(); } else { system("cls"); MENU2(); continue; } break; case 4: LF=dingdanread(); p=LF->next; i=0; printf("请输入所想修改的订单号："); scanf("%d",&n); while(p) { if(n==p->type) { if(strcmp(p->yonghu,yh)==0) { i=1; system("cls"); printf("\n订单信息如下：\n"); printf("\t菜名\t单价\t数量\t总价\t店铺\t用户名\t\n"); printf("\t%s\t%d\t%d\t%d\t%s\t%s\n\n",p->name,p->price,p->amount,p->total,p->shop,p->yonghu); printf("\t\t○ 1.修改数量\n"); printf("\t\t○ 2.删除订单\n"); printf("\t\t○ 其他数字键返回\n"); scanf("%d",&n); if(n==1) { end = time(NULL); if((difftime(end,start))<180) { printf("还没有超过三分钟，请尽快修改哦\n"); printf("您只能修改菜的数量:"); scanf("%d",&m); p->amount=m; p->total=(p->amount)*(p->price); dingdanwrite(LF); printf("\t\t√已成功修改"); } else { printf("时间超过三分钟，已配送\n"); system("pause"); system("cls"); MENU2(); break; } } if(n==2) { deletedingdan(LF); dingdanwrite(LF); } else { system("pause"); system("cls"); MENU2(); break; } } if(strcmp(p->yonghu,yh)!=0) { printf("\t\t× 不好意思，该订单您没有权限修改\n"); i=2; system("pause"); system("cls"); MENU2(); break; } } else p=p->next; } if(i==0) { printf("\t\t×没有改订单\n"); system("pause"); system("cls"); MENU2(); continue; } break; case 5: purchase(); break; case 6: system("cls"); printf("\n\n\n\t\t\t---------------\n"); printf("\t\t\t 订 单 排 序\n"); printf("\t\t\t---------------\n"); printf("\t\t\t△ 1.按菜名排序：\n"); printf("\t\t\t△ 2.按总价排序：\n"); printf("\t\t\t△ 0.返回\n"); scanf("%d",&m); { LF=dingdanread(); if(m==1) dingdan_name_sort(LF); if(m==2) dingdan_total_sort(LF); if(m==0) { system("cls"); MENU2(); continue; } system("pause"); system("cls"); MENU2(); continue; } break; //dindan_name_sort(LF); case 0: system("cls"); MENU(); return; break; } }}void deletefood(link_food Lf){ int i=0; food *p,*n; p=Lf; n=p->next; char m[20]; char a; printf("请输入你所想删除的菜名："); scanf("%s",m); while(n) { if(strcmp(m,n->name)==0) { if(strcmp(n->shop,dp)==0) { i++; p->next=n->next; foodwrite1(Lf); } else printf("不好意思，您没有权限删除\n"); break; } else { p=p->next; n=n->next; } } if(i==0) { printf("没有此菜，无法删除\n"); return; }}void MENU3_choose(){ int x,y; char a[20]; link_food LF,Lf; LF=foodread(); food *p; while(1) { printf("请选择："); scanf("%d",&x); if(x==1) { creatf(); //foodwrite(LF); } if(x==2) { int i=0; printf("请输入要修改的菜的名称："); scanf("%s",a); //LF=foodread(); p=LF->next; while(p!=NULL) { if(strcmp(a,p->name)==0) { i++; if(strcmp(dp,p->shop)==0) { printf("请重新输入菜的信息:\n"); printf("\t\t\t△新菜名："); scanf("%s",p->name); printf("\t\t\t△新菜价："); scanf("%d",&p->price); foodwrite1(LF); } else printf("不好意思，您没有权限修改\n"); break; } p=p->next; } if(i==0) printf("\t\t× 没有此菜的信息\n"); } if(x==3) { deletefood(LF); } if(x==4) { int sum=0; Lf=foodread(); p=Lf->next; system("cls"); printf("\n\n\t\t您家的食物如下："); printf("\n\t\t----------------------------------------\n"); printf("\t\t菜名\t 菜价\t店铺\t 菜系\n"); printf("\t\t----------------------------------------\n"); while(p) { if(strcmp(p->shop,dp)==0) { printf("\t\t%-14s%-10d%-12s%s\n",p->name,p->price,p->shop,p->leibie); printf("\t\t----------------------------------------\n"); sum=sum+1; } p=p->next; } printf("\t\t合计/个：\t\t\t%d个菜\n",sum); printf("\t\t----------------------------------------\n"); if(sum==0) printf("\t\t\t● 怪不得没订单，您还没添加菜品呢\n"); system("pause"); system("cls"); MENU3(); } if(x==5) { LF=dingdanread(); scorefind(LF);//查看业绩函数 system("pause"); system("cls"); MENU3(); } if(x==0) { system("cls"); MENU(); break; } } }//登陆void login(){ int n,i=0,j=0; char a[10],c[10]; char b[15],d[15],f[10],e[20]; FILE *fp; char ch; system("cls"); MENU(); printf("请选择："); while(1) { scanf("%d",&n); //管理员登陆 if(n==1) { printf("请输入用户名:"); scanf("%s",a); printf("请输入密码:"); while((ch=getch())!=13){ if(ch==8){ printf("\b \b"); i--; continue; } b[i++]=ch; putchar('*'); } b[i]=''; fp=fopen("admin.txt","rt"); if(fp==NULL) printf("没有此文件，无法打开"); fscanf(fp,"%s %s %s %s",f,c,d,e); fclose(fp); while(strcmp(a,c)!=0||strcmp(b,d)!=0) { printf("\n账号或密码错误，请重新输入：\n"); printf("请输入用户名："); scanf("%s",a); printf("请输入密码："); i=0; while((ch=getch())!=13){ if(ch==8){ printf("\b \b"); i--; continue; } b[i++]=ch; putchar('*'); } b[i]=''; j++; if(j==2) { printf("\n密码错误已达三次,将自动退回主菜单\n"); system("pause"); system("cls"); MENU(); return; } } system("cls"); //system("color 03"); welcome(); printf("\n"); system("pause"); system("cls"); MENU1(); MENU1_choose(); } //用户登录 if(n==2) { link_user LU; user *p; LU=userread(); p=LU->next; printf("请输入账号或名称"); scanf("%s",yh); printf("请输入密码："); i=0; while((ch=getch())!=13){ if(ch==8){ printf("\b \b"); i--; continue; } b[i++]=ch; putchar('*'); } b[i]=''; int i=0; while(p!=NULL) { if(strcmp(yh,p->name)==0&&strcmp(b,p->password)==0) { system("cls"); //system("color 0a"); //welcome(); printf("\n"); system("pause"); system("cls"); i++; MENU2(); MENU2_choose(); break; } p=p->next; } if(i==0) { printf("密码或者账号错误\n"); system("pause"); system("cls"); ME(); return; } } if(n==3) { link_shop LS; shop *p; j=0; LS=shopread(); p=LS->next; printf("请输入店铺名称或者账号："); scanf("%s",dp); printf("请输入密码"); i=0; while((ch=getch())!=13) { if(ch==8) { printf("\b \b"); i--; continue; } putchar('*'); b[i++]=ch; } b[i]=''; while(p!=NULL) { if(strcmp(dp,p->name)==0&&strcmp(b,p->password)==0) { system("cls"); //system("color 0a"); //welcome(); j++; printf("\n"); system("pause"); system("cls"); MENU3(); MENU3_choose(); break; } else p=p->next; } if(j==0) { printf("\t\t\n× 密码或者账号错误\n"); system("pause"); system("cls"); ME(); return; } } if(n==0) { system("cls"); ME(); break; } }}user * creatu(){ char a[30],b[20],c[15],d[20]; char ca[20],mi1[20],mi2[20]; link_user LU,lu; FILE *fp; user *s,*r,*p; int x,y,i,h; LU=r=(user *)malloc(sizeof(user)); LU->next=NULL; printf("请输入姓名："); scanf("%s",a); lu=userread(); while(1) { i=0; p=lu->next; while(p) { if(strcmp(a,p->name)==0) { i++; printf("\t\t×此用户已经有人注册过,请重新输入:"); scanf("%s",a); break; } else p=p->next; } if(i==0) break; } printf("请输入收货地址："); scanf("%s",b); printf("请输入密码："); scanf("%s",c); printf("请输入电话号码："); scanf("%s",d); x=strlen(c); while(x<8) { printf("\t\t● 您的密码小于8位，安全指数为低\n"); printf("按1修改,其他键放弃修改:"); scanf("%d",&y); if(y==1) { scanf("%s",c); x=strlen(c); } else break; } if(strcmp(b,"0")!=0) { s=(user *)malloc(sizeof(user)); s->score=0; strcpy(s->name,a); strcpy(s->delivery,b); strcpy(s->password,c); strcpy(s->number,d); r->next=s; s->next=NULL; r=s; printf("为了方便充值钱包，请绑定您的银行卡："); scanf("%s",ca); h=strlen(ca); while(h<15) { printf("\t\t● 您的银行卡不足15位，请重新输入："); scanf("%s",ca); h=strlen(ca); } i=0; printf("请设置您的支付密码"); scanf("%s",mi1); printf("请确认密码"); scanf("%s",mi2); if(strcmp(mi1,mi2)!=0) { printf("\t\t×注册失败,两次密码不同"); return 0; } fp=fopen("yue.txt","at"); fprintf(fp,"%s %s %s\n",a,ca,mi1); fclose(fp); } else { printf("\t\t×注册失败，请输入正确的收货信息："); return 0; } return LU; }void Register(){ int y; char a; FILE *fp; shop sq;//申请 system("cls"); printf("\n\n\n\t\t\t\t1.注册用户\t\t\t2.申请店铺\n"); printf("\t\t\t\t0.返回上一级"); while(1) { printf("\t\t▲ 请选择要进行的选项："); scanf("%d",&y); if(y==1)//用户注册 { link_user LU; LU=creatu(); userwrite2(LU); } if(y==2) { printf("请输入店铺名称："); scanf("%s",sq.name); printf("请输入店铺电话："); scanf("%s",sq.phone); printf("请输入店铺地址："); scanf("%s",sq.address); printf("请输入店铺密码："); scanf("%s",sq.password); fp=fopen("shenqing.txt","at"); if(fp==NULL) { printf("发生错误，无法打开文件"); return; } printf("是否保存？Y/else"); scanf("%*c%c",&a); if(a=='Y') { fprintf(fp," %s %s %s %s \n",sq.name,sq.phone,sq.address,sq.password); fclose(fp); printf("\t\t√ 申请成功，等待上级审核"); } else { printf("\t\t× 已放弃申请"); fclose(fp); } } if(y==0) { system("cls"); printf("\t\tWELCOME\n这里是外卖管理系统，请选择接下来的操作："); printf("\n\n\t\t\t\t1.登陆"); printf("\t\t\t\t2.注册\n"); break; } }}void choose(){ int x; ME(); while(1) { scanf("%d",&x); if(x==1) login(); if(x==0) { Exit(); return; } if(x==2) Register(); }}int main(){ choose(); }
以上就是C语言中怎么实现一个外卖管理系统，小编相信有部分知识点可能是我们日常工作会见到或用到的。希望你能通过这篇文章学到更多知识。更多详情敬请关注亿速云行业资讯频道。
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