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食堂用户菜品关系系统(C语言课设)
2022-07-06 21:52:00 【云琤】
#define _CRT_SECURE_NO_WARNINGS
#include<stdio.h>
#include<stdlib.h>
#include<string.h>
#include<windows.h>
//用户的相关操作
int Umanu();//用户操作列表
void Uoperate(int function);//用户的指令判定
struct Users* ReadFile(char* filename);//读取之前文件之中的用户数据
struct Users* login(struct Users* Uhead);//创建用户的操作
void reg(struct Users* Uhead);//登录操作
void writeFile(struct Users* head, char* filename);//将用户信息写入文件
void Uchange(struct Users* head);//修改用户密码
void operate();//操作列表
void SearchCook(struct cook* head);//寻找对应菜品,内部调用search和print
struct cook* search(struct cook* head);//小的搜索函数,执行指定搜索
void Write(struct cook* head, char* filename);//写入菜品数据
void Comment(struct cook* head);//评价菜品
void Add(struct cook* head);//在链表末尾加入新的菜品
void Allprint(struct cook* head);//打印链表中的全部元素
void print(struct cook* temp);//打印单个节点,作为内部工具类函数存在
void Change(struct cook* head);//修改菜品内容
struct cook* Read(char* filename);//读出存入的菜品内容
struct Users
{
char ID[21];//用户的ID
char passWord[21];//用户的密码
struct Users* next;//链表操作,指向下一个存储块
};
struct Users* login(struct Users* Uhead)
{
struct Users* newUser = (struct Users*)malloc(sizeof(struct Users));
struct Users* temp = Uhead;
printf("创建您的ID(1-20位):\n");
scanf("%s", newUser->ID);
printf("请输入您设置的密码(1-20位) :\n");
scanf("%s", newUser->passWord);
if (temp != NULL)
{
while (temp->next != NULL)
{
temp = temp->next;
}
temp->next = newUser;
temp = temp->next;
}
else
{
temp = newUser;
Uhead = temp;
}
newUser->next = NULL;
return Uhead;
}
void reg(struct Users* Uhead)
{
int a = 0;
printf("请输入您的ID :\n");
char UID[20];
scanf("%s", &UID);
struct Users* temp = Uhead;
while (temp != NULL)
{
if (strcmp(temp->ID, UID) == 0)
{
a = 1;
break;
}
else
{
temp = temp->next;
}
}
if (a != 1)
{
printf("该ID还未注册!请先注册!\n");
Sleep(1500);
int function = Umanu();
Uoperate(function);
return;
}
char passWord[20];
int flag = 1;
while (flag)
{
printf("请输入您的密码 :\n");
scanf("%s", passWord);
if (strcmp(passWord,temp->passWord)==0)
{
flag = 0;
printf("密码正确 !欢迎使用 !\n");
Sleep(1000);
return;
}
else
{
printf("密码错误 !请30秒后重试 !\n");
Sleep(30000);
}
}
}
struct Users* ReadFile(char* filename)
{
struct Users* temp = NULL;
struct Users* Uhead = temp = (struct Users*)malloc(sizeof(struct Users));;
struct Users* newUser = (struct Users*)malloc(sizeof(struct Users));
newUser->next = NULL;
FILE* fp = fopen(filename, "r");
if (fp == NULL)
{
return 0;
}
fscanf(fp, "%s\t%s\n", temp->ID, temp->passWord);
Uhead = temp;
temp->next = NULL;
while(fscanf(fp,"%s\t%s\n",newUser->ID,newUser->passWord)!=EOF)
{
temp->next = newUser;
temp = temp->next;
newUser = (struct Users*)malloc(sizeof(struct Users));
newUser->next = NULL;
}
fclose(fp);
return Uhead;
}
void destory(struct Users*Uhead)
{
char UID[21];
printf("请输入您的ID :\n");
char chioce[5];
scanf("%s", UID);
char passWord[21];
struct Users* temp = Uhead;
while (temp->ID == UID)
{
temp = temp->next;
}
printf("请输入密码 :\n");
scanf("%s", passWord);
while (passWord == temp->passWord)
{
printf("请输入您的密码 :\n");
scanf("%d", &passWord);
if (passWord == temp->passWord)
{
int flag = 1;
printf("密码正确 !确定要销毁账号吗 ?(yes/no)\n");
while (flag)
{
scanf("%s", chioce);
if (chioce == "yes")
{
flag = 0;
struct Users* n = NULL;
struct Users* p = Uhead;
n = temp->next;
while (p->next == temp)
{
p = p->next;
}
p->next = n;
free(temp);
return;
}
else if (chioce == "no")
{
flag = 0;
printf("已取消该操作 !\n");
Sleep(5);
system("cls");
int function = Umanu();
Uoperate(function);
return;
}
else
{
printf("请输入正确操作 !\n");
}
return;
}
}
else
{
printf("密码错误 !请30秒后重试 !\n");
// Sleep(30);
}
}
}
void Uchange(struct Users* head)
{
struct Users* temp = head;
printf("请输入您的ID :\n");
char ID[20];
scanf("%s", ID);
while (temp != NULL)
{
if (strcmp(ID, temp->ID) == 0)
{
char password[20];
while (1)
{
printf("请输入原本的密码 :\n");
scanf("%s", password);
if (strcmp(password, temp->passWord) == 0)
{
printf("请输入修改之后的密码 :\n");
scanf("%s", temp->passWord);
break;
}
else
{
printf("密码错误!!!输入正确后方可修改!!!\n");
Sleep(3000);
}
}
}
else
{
temp = temp->next;
}
}
}
void writeFile(struct Users* head, char *filename)
{
FILE* fp = NULL;
fp = fopen(filename, "w+");
struct Users* temp = head;
while (temp != NULL)
{
fprintf(fp, "%s\t%s\n", temp->ID, temp->passWord);
temp = temp->next;
}
fclose(fp);
}
int Umanu()
{
printf("----------------------------------------------------------------------\n");
printf("| 食堂用户菜品管理系统 |\n");
printf("|--------------------------------------------------------------------|\n");
printf("| 1.注册新用户 |\n");
printf("| 2.登录用户 |\n");
printf("| 3.修改账户密码 |\n");
printf("----------------------------------------------------------------------\n");
int function = 0;
printf("请输入指令 :\n");
scanf("%d", &function);
return function;
}
void Uoperate(int function)
{
struct Users* Uhead = (struct Users*)malloc(sizeof(struct Users));
Uhead->next = NULL;
char filename[100] = "D:\\关于学习勇敢的尝试\\食堂用户菜品管理系统\\食堂用户菜品管理系统\\用户资料";
Uhead = ReadFile(filename);
if (function == 1)
{
Uhead = login(Uhead);
printf("注册成功 !欢迎使用 !\n");
writeFile(Uhead, filename);
Sleep(5);
system("cls");
return;
}
else if (function == 2)
{
reg(Uhead);
writeFile(Uhead,filename);
}
else if (function == 3)
{
Uchange(Uhead);
writeFile(Uhead, filename);
int function = Umanu();
Uoperate(function);
}
else
{
printf("请输入正确的指令!!!\n");
int function = Umanu();
Uoperate(function);
}
}
void manu()
{
printf("----------------------------------------------------------------------\n");
printf("| 食堂用户菜品管理系统 |\n");
printf("|--------------------------------------------------------------------|\n");
printf("| 1.导入菜品信息 |\n");
printf("| 2.删除菜品信息 |\n");
printf("| 3.修改菜品信息 |\n");
printf("| 4.打印菜品信息 |\n");
printf("| 5.增加菜品信息 |\n");
printf("| 6.查找菜品信息 |\n");
printf("| 7.评价菜品 |\n");
printf("| 8.退出系统 |\n");
printf("----------------------------------------------------------------------\n");
}
struct cook
{
char name[50];//菜名
float price;//价格
char met[150];//材料
int num = 0;//评价人数
float avecom = 0;//平均评价分数
struct cook* next;//链表操作
};
void Write(struct cook* head, char* filename)
{
FILE* fp = NULL;
fp = fopen(filename, "w");
struct cook* newUser = (struct cook*)malloc(sizeof(struct cook));
struct cook* temp = head;
while (temp != NULL)
{
fprintf(fp, "%s\t%f\t%s\t%f\t%d\n", temp->name, temp->price, temp->met, temp->avecom, temp->num);
temp = temp->next;
}
return;
}
void Comment(struct cook* head)
{
struct cook* temp = head;
struct cook* flag = search(temp);
if (flag != NULL)
{
printf("请输入您的评分 :\n");
float comment = 0;
scanf("%f", &comment);
flag->avecom = ((flag->avecom * flag->num) + comment) / (flag->num + 1);
flag->num++;
printf("评价成功!\n");
return;
}
else
{
printf("找不到对应菜品!\n");
return;
}
}
void SearchCook(struct cook* head)
{
struct cook* flag = search(head);
if (flag != NULL)
{
printf("找到了!\n");
print(flag);
}
else
{
printf("未能找到对应菜品!\n");
}
}
struct cook* search(struct cook* head)
{
struct cook* temp = head;
char name[50];
printf("请输入您要操作的菜名 :\n");
scanf("%s", name);
int flag = 0;
while (temp != NULL)
{
if (strcmp(name, temp->name) == 0)
{
flag = 1;
return temp;
}
else
{
temp = temp->next;
}
}
if (flag == 0)
{
return NULL;
}
}
void Add(struct cook* head)
{
struct cook* temp = head;
while (temp->next != NULL)
{
temp = temp->next;
}
struct cook* newCook = (struct cook*)malloc(sizeof(struct cook));
printf("请输入您想添加的菜品的具体信息(菜名/价格/材料/综合评分/评价人数) :\n");
scanf("%s", newCook->name);
scanf("%f", &newCook->price);
scanf("%s", newCook->met);
scanf("%f", &newCook->avecom);
scanf("%d", &newCook->num);
temp->next = newCook;
newCook->next = NULL;
printf("添加成功!\n");
}
void Allprint(struct cook* head)
{
struct cook* temp = head;
while (temp->next != NULL)
{
print(temp);
temp = temp->next;
}
print(temp);
return;
}
void print(struct cook* temp)
{
printf("菜名:%s\n", temp->name);
printf("价格:%0.2f\n", temp->price);
printf("材料:%s\n", temp->met);
printf("综合评分:%0.2f\n", temp->avecom);
printf("评价人数(%d)\n", temp->num);
}
void Change(struct cook* head)
{
struct cook* temp = head;
int flag = 0;
int function;
struct cook* fflag = search(head);
if (fflag == NULL)
{
printf("没有对应菜品!!!\n");
return;
}
else
{
while (1)
{
printf("请输入想修改的内容:(1.菜品名称/2.材料/3.价格)\n");
scanf("%d", &function);
if (function == 1)
{
printf("请输入新的菜名 :\n");
scanf("%s", fflag->name);
printf("修改成功!\n");
break;
}
else if (function == 2)
{
printf("请输入新的材料列表 :\n");
scanf("%s", fflag->met);
printf("修改成功!\n");
break;
}
else if (function == 3)
{
printf("请输入新的价格 :\n");
scanf("%f", &fflag->price);
printf("修改成功!\n");
break;
}
else
{
printf("请输入正确的指令!!!\n");
Sleep(10000);
}
}
}
}
struct cook* Delete(struct cook* head)
{
struct cook* temp = head;
struct cook* next = NULL;
struct cook* flag = search(head);
if (flag != NULL)
{
if (flag == head)
{
head = head->next;
return head;
}
else
{
while (temp->next != flag)
{
temp = temp->next;
}
temp->next = flag->next;
return head;
}
}
else
{
printf("未能找到对应菜品!\n");
}
}
struct cook* Create(struct cook* head)
{
struct cook* temp = head;
if (head != NULL)
{
while (temp->next != NULL)
{
temp = temp->next;
}
}
struct cook* Next = (struct cook*)malloc(sizeof(cook));
Next->next = NULL;
printf("请输入你想要录入的数据(菜名/价格/材料/综合评分/评价人数) :\n若想结束,请输入end\n");
while (1)
{
scanf("%s", Next->name);
if (strcmp(Next->name, "end") == 0)
{
break;
}
scanf("%f", &Next->price);
scanf("%s", Next->met);
scanf("%f", &Next->avecom);
scanf("%d", &Next->num);
if (temp == NULL)
{
temp = Next;
head = temp;
}
else
{
Next->next = NULL;
temp->next = Next;
temp = temp->next;
}
Next= (struct cook*)malloc(sizeof(cook));
}
return head;
}
struct cook* Read(char* filename)
{
struct cook* head = NULL;
struct cook* temp = (struct cook*)malloc(sizeof(cook));
struct cook* newCook = (struct cook*)malloc(sizeof(struct cook));
newCook->next = NULL;
FILE* fp = fopen(filename, "r");
if (fp == NULL)
{
return NULL;
}
fscanf(fp, "%s%f%s%f%d", temp->name, &temp->price, temp->met, &temp->avecom, &temp->num);
head = temp;
temp->next = NULL;
while (fscanf(fp, "%s%f%s%f%d", newCook->name, &newCook->price, newCook->met, &newCook->avecom, &newCook->num) != EOF)
{
temp->next = newCook;
temp = temp->next;
newCook = (struct cook*)malloc(sizeof(struct cook));
newCook->next = NULL;
}
fclose(fp);
return head;
}
void operate()
{
int fun = 0;
printf("请输入指令 :\n");
struct cook* Head = NULL;
char filename[100]="D:\\关于学习勇敢的尝试\\食堂用户菜品管理系统\\食堂用户菜品管理系统\\菜品资料";
struct cook* head = Read(filename);
while (scanf("%d", &fun) != EOF)
{
if (fun == 1)
{
head = Create(head);
}
else if (fun == 2)
{
head = Delete(head);
}
else if (fun == 3)
{
Change(head);
}
else if (fun == 4)
{
Allprint(head);
}
else if (fun == 5)
{
Add(head);
}
else if (fun == 6)
{
SearchCook(head);
}
else if (fun == 7)
{
Comment(head);
}
else if (fun == 8)
{
Write(head,filename);
printf("感谢您的使用!\n");
return;
}
else
{
printf("请输入正确的指令!!!\n");
}
manu();
printf("请输入指令 :\n");
}
}
int main()
{
int function = Umanu();
Uoperate(function);
system("cls");
manu();
operate();
}
该系统我主要划分为两个大模块,分别就是对于用户的操作和对于菜品的操作,对用户的操作,首先提供void Uoperate(),是用户的操作面板,之后选用if-else if-else对指令的解析和调用函数的选择都在这个操作面板,设计内容为
1、注册新用户
2、登录用户
3、修改账户密码
对于不同的指令执行不同的操作,菜品模块类似于用户模块,提供void operate()函数,是菜品的操作面板,也是对于指令的解析和选择调用函数
1、导入菜品信息
2、删除菜品信息
3、修改菜品信息
4、打印菜品信息
5、增加菜品信息
6、查找菜品信息
7、评价菜品
8、退出系统
主函数main中主要调用就是Uoperate和operate函数,对指令的读取判定和执行都在这两个函数中,这两个函数返回空类型,只负责执行函数。
此系统中还有两个结构体用来存储不同信息
struct Users
{
char ID[21];//用户的ID
char passWord[21];//用户的密码
struct Users* next;//链表操作,指向下一个存储块
};
struct cook
{
char name[50];//菜名
float price;//价格
char met[150];//材料
int num = 0;//评价人数
float avecom = 0;//平均评价分数
struct cook* next;//链表操作
};
该系统主要用于用户管理,此时在此段代码中一共有两个链表,一个链表用于存储用户信息,另一个链表用于存储菜品信息。此处特地减少了在主函数中的代码,主函数只负责调用四个主要函数,分别为用户操作菜单,用户操作面板,菜品操作菜单和菜品操作面板。
仍有许多方面可以改善,比如注册用户和登录用户时候密码的保密性欠缺,用户可以直接看到自己输入的密码,但是实际上应该隐藏数字,防止密码泄露。同时对于用户面板的操作比较单一,而且操作过少,应该增加部分功能,比如销毁账户和退出系统。面板颜色也可以更改,但是在如上代码中没有加入相应操作。这些都是可以在之后弥补的点。
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