C语言订餐系统演示教学

1、C语言订餐系统#include <stdio.h>#include <stdlib.h>#include <string.h>struct consumerchar stu_name30,stu_Place20;/定义客户姓名，地点char stu_time20,stu_madetime20,stu_memu20; /定义用餐时间，订单生成时间，菜单int stu_num; /用餐人数order;void reserve()/订餐int i;printf(" 请输入客户姓名： ");scanf("%s",&or

2、der.stu_name);strcat(order.stu_name,".txt");/将后一个字符串加到前一个FILE *fp1=fopen(order.stu_name,"w");/ 打开文档if(fp1=NULL)/ 若文件打开失败printf(" 文件打开失败 n");exit(0);总表 .txt","a+");/ 打开文档if(fp2=NULL)/ 若文件打开失败printf(" 文件打开失败 n");exit(0);fprintf(fp1," 客户姓名 :%s

3、n",order.stu_name);fprintf(fp2," 客户姓名 :%sn",order.stu_name);printf(" 请输入用餐人数： ");scanf("%d",&order.stu_num);fprintf(fp1," 用餐人数 :%dn",order.stu_num);fprintf(fp2," 用餐人数 :%dn",order.stu_num);printf(" 请输入用餐时间： ");scanf("%s",&

4、amp;order.stu_time);fprintf(fp1," 用餐时间 :%sn",order.stu_time);fprintf(fp2," 用餐时间 :%sn",order.stu_time);printf(" 请输入包间或餐桌号 :");scanf("%s",&order.stu_Place);fprintf(fp1," 包间号餐桌号 :%sn",order.stu_Place);fprintf(fp2," 包间号餐桌号 :%sn",order.stu_P

5、lace);printf(" 请点菜 :");fprintf(fp1," 所点的菜 :");fprintf(fp2," 所点的菜 :");for(i=1;i+)scanf("%s",&order.stu_memu);fprintf(fp1,"%s ",&order.stu_memu);fprintf(fp2,"%s ",&order.stu_memu);if(getchar()='n')break;printf(" 请输入订单

6、生成时间 :");scanf("%s",&order.stu_madetime);fprintf(fp1,"n 订单生成时间 :%s",order.stu_madetime);fprintf(fp2,"n 订单生成时间 :%s",order.stu_madetime);void find()/ 查询char line1150;char line2150;char line3150;char line4150;char line5150;char line6150;printf(" 请输入客户名： "

7、;);scanf("%s",&order.stu_name);strcat(order.stu_name,".txt");FILE *fp;if(fp=fopen(order.stu_name,"r")=NULL)/ 打开文档；printf(" 客户不存在 ");exit(0);fgets(line1,150,fp);printf("%sn",line1);fgets(line2,150,fp);printf("%sn",line2);fgets(line3,150,

8、fp);printf("%sn",line3);fgets(line4,150,fp);printf("%sn",line4);fgets(line5,150,fp);printf("%sn",line5);fgets(line6,150,fp);printf("%sn",line6);/ 读取文档和显示输出；fclose(fp);getchar();void deletes()/删除char line1150;char line2150;char line3150;char line4150;char line5

9、150;char line6150;char reason150;char choice;printf(" 请输入客户姓名 :n");scanf("%s",&order.stu_name);strcat(order.stu_name,".txt");FILE *fp;if(fp=fopen(order.stu_name,"r")=NULL)/ 打开文档；printf(" 无该用户 ");exit(0);fgets(line1,100,fp);printf("%s",l

10、ine1);fgets(line2,100,fp);printf("%s",line2);fgets(line3,100,fp);printf("%s",line3);fgets(line4,100,fp);printf("%s",line4);fgets(line5,100,fp);printf("%s",line5);fgets(line6,100,fp);printf("%s",line6);fclose(fp);/读取文档和显示输出；printf(" 是否确认删除 y/n&qu

11、ot;);scanf("%s",&choice);if(choice='n')exit(0);elseprintf(" 请输入您的联系方式和退订原因：");scanf("%s",&reason);FILE *fp2;原因 .txt","a+")=NULL)printf("fail");exit(0);fprintf(fp2,"%s",reason);fclose(fp2);strcat(order.stu_name,".tx

12、t");FILE *fp;if(fp=fopen(order.stu_name,"r")=NULL)/ 打开文档；printf(" 无该客户 ");exit(0);if(remove(order.stu_name)=0)/删除文档；printf(" 已删除成功 !");exit(0);elseprintf(" 对不起 !删除失败 !");fclose(fp);void appraise()/评价char stu_name20;char evaluate500;printf(" 请输入客户姓名：

13、");scanf("%s",&order.stu_name);strcat(order.stu_name,".txt");FILE *fp=fopen(order.stu_name,"a+");/ 将文档打开printf(" 请输入评价 : ");scanf("%s",&evaluate);FILE *fp1;总表 .txt","a+")=NULL)printf("fail");exit(0);fprintf(fp1,&

14、quot;%s",evaluate);fclose(fp1);fprintf(fp,"%sn",evaluate);fclose(fp);printf(" 评价成功，欢迎下次再来");int main()int choice,x=1;while(1)printf("=nn");printf("订餐管理系统n");printf("nn");+ +printf("| 1-订餐|+| 2-查询|n");printf("| 3-删除|+| 4-评价|n");printf("printf("| 0-结束 |=n");=n");printf(" 请选择所要选择的功能 : ");scanf("%d",&choice);getchar();swit