内容
说明：C语言编写，大一计算机软件技术基础课程设计课题，参考https://blog.csdn.net/kiddingstreet/article/details/78258787完成。
题目：
网上订餐系统设计
设计一个小程序，维护某家餐厅的客户信息和订餐信息。客户信息包括：姓名，电话，余额。可以查询这些信息。可以充值，充值后余额相应改变。菜品包括酸菜鱼，15元。豆花鱼，12元。红烧鱼，8元。客户预定某项菜品后，余额相应改变，订购的菜品亦可查询。
#include<stdio.h>
#include<stdlib.h>
#include<string.h>
//建立关于菜单的结构体
typedef struct food
{
char name[20];
int price;
struct food *next;
}food,*link_food;
//建立关于用户的结构体
typedef struct user
{
char name[10];
char tel[10];
int balance;
struct user *next;
}user,*link_user;
//建立关于订单的结构体
typedef struct foodw
{
char namef[20];
int price;
char yonghu[20];
struct foodw *nextf;
}foodw,*link_foodw;
//开始界面
void welcome()
{
int i=0;
char a[52]="\t\t->>WELCOME TO RESTAURANT MANAGEMENT SYSTEM<<--";
printf("\n\n\n\n\t\t");
while(a[i])
{
printf("%c",a[i]);
i++;
}
printf("\n\n\n\n\t\t");
printf("\n\n\n\n\t\t\t\t\t--------------------------------\n");
printf("\t\t\t\t\t 餐 厅 管 理 系 统 \n");
printf("\t\t\t\t\t 1.菜单 \n");
printf("\t\t\t\t\t 2.用户 \n");
printf("\t\t\t\t\t--------------------------------\n");
}
//建立用户
void *creats()
{
char a[30],b[20];
int d;
link_user LU;
user *s,*r;
LU=r=(user *)malloc(sizeof(user));
LU->next=NULL;
r=LU;
while(1)
{
printf("请输入用户信息:\n");
printf("\t\t● 用户姓名：");
scanf("%s",a);
printf("\n\t\t● 用户电话：");
scanf("%s",b);
if(strcmp(a,"0")!=0)
{
printf("\n\t\t● 用户余额：");
scanf("%d",&d);
s=(user *)malloc(sizeof(user));
strcpy(s->name,a);
strcpy(s->tel,b);
s->balance=d;
r->next=s;
s->next=NULL;
r=s;
}
else
break;
}
return LU;
}
//建立订单
void *creatsfw(link_user LU)
{
char a[30],d[20];
int b;
link_foodw LFW;
foodw *s,*r;
LFW=r=(foodw *)malloc(sizeof(foodw));
LFW->nextf=NULL;
r=LFW;
while(1)
{
printf("请输入订单信息:\n");
printf("\t\t● 订单：");
scanf("%s",a);
printf("\n\t\t● 订单价格：");
scanf("%d",&b);
if(strcmp(a,"0")!=0)
{
printf("\n\t\t● 用户姓名：");
scanf("%s",d);
s=(foodw *)malloc(sizeof(foodw));
strcpy(s->namef,a);
s->price=b;
strcpy(s->yonghu,d);
r->nextf=s;
s->nextf=NULL;
r=s;
disvalue(LU,b,d);
}
else
break;
}
return LFW;
}
//输出订单
void outputuserw(link_foodw LFW)
{
foodw *x;
x=LFW->nextf;
printf("\n\t\t\t\t\t 订 单 ");
printf("\n\t\t\t\t\t------------------------------------\n");
printf("\t\t\t\t\t用户 订单 价格\n");
printf("\t\t\t\t\t------------------------------------\n");
while(x!=NULL)
{
printf("\t\t\t\t\t%-13s%-12s%-12d元\n",x->yonghu,x->namef,x->price);
printf("\t\t\t\t\t------------------------------------\n");
x=x->nextf;
}
}
//输出用户列表
void outputuser(link_user LU)
{
user *x;
x=LU->next;
printf("\n\t\t\t\t\t 用 户 ");
printf("\n\t\t\t\t\t------------------------------------\n");
printf("\t\t\t\t\t姓名 电话 余额\n");
printf("\t\t\t\t\t------------------------------------\n");
while(x!=NULL)
{
printf("\t\t\t\t\t%-13s%-12s%-12d元\n",x->name,x->tel,x->balance);
printf("\t\t\t\t\t------------------------------------\n");
x=x->next;
}
}
//充值
void value(link_user LU)
{
user *x;
char a[10];
int b;
x=LU->next;
printf("输入用户电话：\n");
scanf("%s",a);
printf("输入充值价格：\n");
scanf("%d",&b);
if(strcmp(a,x->tel)!=0)
{
x=x->next;
}
else
{
x->balance=x->balance+b;
}
}
//余额减少
int disvalue(link_user LU,int b,char a[])
{
user *x;
x=LU->next;
if(strcmp(a,x->name)!=0)
{
x=x->next;
}
else
{
x->balance=x->balance-b;
}
return 0;
}
//选择界面
void choose(int x)
{
if(x==1)
{
meun();
}
if(x==2)
{
users();
}
}
//订单界面
void foodwrite(link_user LU)
{
int x;
link_foodw LFW;
printf("\n\n\n\n\t\t\t\t\t--------------------------------\n");
printf("\t\t\t\t\t 订 单 管 理 系 统 \n");
printf("\t\t\t\t\t 1.建立订单 \n");
printf("\t\t\t\t\t 2.查看订单 \n");
printf("\t\t\t\t\t 0.返回 \n");
printf("\t\t\t\t\t--------------------------------\n");
while(scanf("%d",&x)!=0)
{
if(x==1)
{
LFW=creatsfw(LU);
}
if(x==2)
{
outputuserw(LFW);
}
if(x==0)
break;
}
return 0;
}
//用户界面
int users()
{
int x;
link_user LU;
printf("\n\n\n\n\t\t\t\t\t--------------------------------\n");
printf("\t\t\t\t\t 用 户 管 理 系 统 \n");
printf("\t\t\t\t\t 1.新用户 \n");
printf("\t\t\t\t\t 2.用户名单 \n");
printf("\t\t\t\t\t 3.充值 \n");
printf("\t\t\t\t\t 4.订单 \n");
printf("\t\t\t\t\t 0.返回 \n");
printf("\t\t\t\t\t--------------------------------\n");
while(scanf("%d",&x)!=0)
{
if(x==1)
{
LU=creats();
}
if(x==2)
{
outputuser(LU);
}
if(x==3)
{
value(LU);
}
if(x==4)
{
foodwrite(LU);
}
if(x==0)
break;
}
return 0;
}
//输出菜谱
void outputfood(link_food LF)
{
food *p;
p=LF->next;
printf("\n\t\t\t\t\t 菜 谱 ");
printf("\n\t\t\t\t\t-------------------------\n");
printf("\t\t\t\t\t\t菜名 菜价 \n");
printf("\t\t\t\t\t-------------------------\n");
while(p)
{
printf("\t\t\t\t\t%-13s%-12d元%\n",p->name,p->price);
printf("\t\t\t\t\t-------------------------\n");
p=p->next;
}
}
//菜谱
int meun()
{
int i=0,j=0,k;
link_food LF;
food *s,*r;
char a[10][10]={"酸菜鱼","豆花鱼","红烧鱼"};
int b[10]={15,12,8};
LF=(food *)malloc(sizeof(food));
LF->next=NULL;
r=LF;
printf("需要增加新菜品吗？\n");
printf("1.YES 2,NO\n");
scanf("%d",&k);
if(k==1)
{
int q,p;
q=j+3;
for(p=0;p<7;p++)
{
printf("请输入菜名:\n");
scanf("%s",a[q]);
printf("请输入价格:\n");
scanf("%d",&b[q]);
if(strcmp(a[q],"0")==0)
break;
q++;
j++;
}
}
for(j=0;j<10;j++)
{
if(strcmp(a[j],"0")!=0)
{
s=(food *)malloc(sizeof(food));
s->price=b[j];
strcpy(s->name,a[j]);
r->next=s;
s->next=NULL;
r=s;
}
else
break;
}
outputfood(LF);
return 0;
}
//主函数
void main()
{
int x;
welcome();
while(scanf("%d",&x)!=EOF)
{
choose(x);
}
}