C语言实现图书馆里系统

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于 2024-02-20 08:18:38 发布

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文章标签： c语言算法数据结构

本文链接：https://blog.youkuaiyun.com/mawanbing/article/details/136181770

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C语言实现的图书馆里系统，用到了结构体相关知识，代码如下：

#include <stdio.h>
#include <string.h>
#include <time.h>

typedef struct StuInfo {
   char ID[11];
   char Faculty[32];
   char Profession[32];
   char Name[32];
   char Sex[8];
   char Phone[12];
   char Passwd[32];
   char Email[32];
   char BookList[3][64];
   int flag;
} STUINFO;

typedef struct BookInfo {
   char ID[7];
   char Name[64];
   char Author[32];
   float Price;
   char PubHouse[64];
   char PubDate[64];
   char BookIntro[1024];
   int Count;
   char Index[64];//书架
   char BrowDate[64];
   char RetDate[64];//还书日期
   int ReBrowCount;//续借次数
   int BrowCount;//借书次数
} BOOKINFO;

typedef struct BookManager {
   char ID[11];
   char Name[64];
   char Passwd[32];
   char Email[32];
} BOOKMANAGER;

typedef struct BroInfo {
   char ID[11];
   char Name[32];
   char Profess[64];
   char ReDate[64];
} BROINFO;

typedef struct BookInfoCount {
char Name[64];
int count;
} BOOKINFOCOUNT;

typedef struct ProfessBookInfo {
char Profession[32];
BOOKINFOCOUNT Book[1024];
} PROFESSBOOKINFO;

STUINFO g_StuInfo[1024];
BOOKINFO g_BookInfo[1024];
BROINFO g_BroInfo[1024];
BOOKMANAGER g_BookManager[1024];
PROFESSBOOKINFO g_ProfessBookInfo[1024];

char g_StuID[11];
char g_ManaID[11];
int g_BookCount;

void UpdateStuInfo();
int CheckBookTime(int year, int month, int day, int hour, int min);
void UpdateBookInfo();
void Sort();
int CalSumDays(int year, int month, int day);
int CheckEmail(char *email);
void QueryAllBookBorrowInfo();
void QueryStuBorrowInfo();

int CheckBookTime(int year, int month, int day, int hour, int min)//验证输入的借书时间格式是否正确
{
   if (month < 1 || month > 12)
   {
       printf("输入错误！\n");
       return -1;
   }

   if (month == 1 || month == 3 || month == 5 || month == 7 || month == 8 || month == 10 || month == 12)
   {
       if (day < 1 || day > 31)
       {
           printf("输入错误！\n");
           return -1;
       }
   }

if (month == 4 || month == 6 || month == 9 || month == 11)
{

       if (day < 1 || day > 30)
       {
           printf("输入错误！\n");
           return -1;
       }
   }
   if (month == 2)
   {
       if ((year % 4 == 0 && year % 100 != 0) || year % 400 == 0)
       {
           if (day < 1 || day > 29)
           {
               printf("输入错误！\n");
               return -1;
           }
       }
       else
       {
           if (day < 1 || day > 28)
           {
               printf("输入错误！\n");
               return -1;
           }
       }
   }

   if (hour < 0 || hour > 23)
   {
       printf("输入错误\n");
       return -1;
   }

   if (min < 0 || min > 59)
   {
       printf("输入错误\n");
       return -1;
   }

return 0;
}

int ManagerLogin()//管理员登陆
{
   char t_ID[32] = {0};
   char t_Passwd[32] = {0};
   int i = 0;
   FILE *fp = NULL;

   printf("\t\t\t\t管理员登录\n");
   printf("\n\t\t\t\t请输入账号：");
   scanf("%s", t_ID);
   printf("\n\t\t\t\t请输入密码：");
   scanf("%s", t_Passwd);

   fp = fopen("Manager.txt", "r");
   if (fp == NULL)
   {
       printf("文件不存在！\n");
       return -1;
   }

   while (strlen(g_BookManager[i].ID) != 0)//当存在管理员ID时
   {
       if (!strcmp(t_ID, g_BookManager[i].ID) && !strcmp(t_Passwd, g_BookManager[i].Passwd))//密码和ID都对
       {
           strcpy(g_ManaID, g_BookManager[i].ID);//将此ID存入全局变量
           fclose(fp);
           return 0;
       }
       i++;
   }

fclose(fp);

return -1;
}

int LoadManagerInfo()//将manager文件里的内容存入到数组里
{
   int i = 0;
   FILE *fp = fopen("Manager.txt", "r");
   if (fp == NULL)
   {
       printf("文件不存在！\n");
       return -1;
   }
   char str[1024] = {0};

   while(fgets(str, 1024, fp))//fgets读取一行内容
   {
       str[strlen(str)-1] = '\0';//方便解析字符串，去掉换行符
       sscanf(str, "%s %s %s %s", g_BookManager[i].ID, g_BookManager[i].Name, g_BookManager[i].Passwd, g_BookManager[i].Email);
       i++;
       memset(str, 0, 1024);
   }

fclose(fp);

return 0;
}

int LoadBrowInfo()
{
   int i = 0;
   FILE *fp = fopen("BrowRecord.txt", "r");
   if (fp == NULL)
   {
       printf("文件不存在！\n");
       return -1;
   }
   char str[1024] = {0};
   while(fgets(str, 1024, fp))
   {
       str[strlen(str)-1] = '\0';
       sscanf(str, "%s %s %s %s", g_BroInfo[i].ID, g_BroInfo[i].Name, g_BroInfo[i].Profess, g_BroInfo[i].ReDate);
       i++;
       memset(str, 0, 1024);
   }

fclose(fp);

return 0;
}

int LoadStuInfo()
{
   FILE *fp = NULL;
   int i = 0;
   fp = fopen("Student.txt", "r");
   if (fp == NULL)
   {
       printf("文件不存在！\n");
       return -1;
   }
   while(fscanf(fp, "%s %s %s %s %s %s %s %s %s %s %s %d\n", g_StuInfo[i].ID, g_StuInfo[i].Faculty, g_StuInfo[i].Profession, g_StuInfo[i].Name, g_StuInfo[i].Sex, g_StuInfo[i].Phone, g_StuInfo[i].Passwd, g_StuInfo[i].Email, g_StuInfo[i].BookList[0], g_StuInfo[i].BookList[1], g_StuInfo[i].BookList[2], &g_StuInfo[i].flag) == 12)//12是为了结束读取文件
   {
       i++;
   }

fclose(fp);
return 0;
}

int CheckIndex(char *index)//检查是否同一个书架放了2本书
{
   int i = 0;
   for (i = 0; i < g_BookCount; i++)
   {
       if (strcmp(index, g_BookInfo[i].Index) == 0)//如果相同，返回-1
       {
           return -1;
       }
   }

return 0;
}

int CheckSameID(char *ID)//检查书是否用了同一个编号
{
   int i = 0;
   for (i = 0; i < g_BookCount; i++)
   {
       if (strcmp(ID, g_BookInfo[i].ID) == 0)
       {
           return -1;
       }
   }

return 0;
}

void AddBook()//添加图书
{
int year, month, day;

int i = 0;

   while(1)
   {
       printf("请输入图书编号： ");
       scanf("%s", g_BookInfo[g_BookCount].ID);//增加书的编号

       if (strlen(g_BookInfo[g_BookCount].ID) != 7)//判断编号长度是否为6位
{
printf("编号格式不正确！\n");
continue;
}
       if (CheckSameID(g_BookInfo[g_BookCount].ID) == -1)//判断是否用了同一个ID
       {
       printf("图书编号已存在！\n");
           continue;
       }
       break;
   }

   printf("请输入图书名称： ");
   scanf("%s", g_BookInfo[g_BookCount].Name);
   printf("请输入图书作者： ");
   scanf("%s", g_BookInfo[g_BookCount].Author);
   printf("请输入图书价格： ");
   scanf("%f", &g_BookInfo[g_BookCount].Price);
   printf("请输入图书出版社： ");
   scanf("%s", g_BookInfo[g_BookCount].PubHouse);
   while(1)
   {
       printf("请输入图书出版日期： ");
       printf("年 : ");
       scanf("%d", &year);
       printf("月 : ");
       scanf("%d", &month);
       printf("日 : ");
       scanf("%d", &day);
       if (-1 == CheckBookTime(year, month, day, 5, 5))
       {
           continue;
       }
       sprintf(g_BookInfo[g_BookCount].PubDate, "%d年%d月%d日", year, month, day);
       break;
   }

   printf("请输入图书简介： ");
   scanf("%s", g_BookInfo[g_BookCount].BookIntro);
   printf("请输入图书数量： ");
   scanf("%d", &g_BookInfo[g_BookCount].Count);
   while(1)
   {
   int row, col;
       printf("请输入图书书架位置： \n");
       printf("排： ");
       scanf("%d", &row);
       printf("列： ");
       scanf("%d", &col);

       sprintf(g_BookInfo[g_BookCount].Index, "%d排%d列", row, col);
       if (CheckIndex(g_BookInfo[g_BookCount].Index) == -1)//判断书架位置
       {
       printf("书架位置已经有书！\n");
           continue;
       }
       break;
   }

   strcpy(g_BookInfo[g_BookCount].BrowDate, "xx");//将借书世界显示一下
   strcpy(g_BookInfo[g_BookCount].RetDate, "xx");
   g_BookInfo[g_BookCount].ReBrowCount = 0;//续借次数为0
   g_BookInfo[g_BookCount].BrowCount = 0;//借书次数也为0

   g_BookCount++;
   printf("添加成功！\n");
   UpdateBookInfo();
}

int DelBook()
{
   int i = 0;
   int j = 0;
   char t_BookID[7] = {0};
   printf("请输入要删除的图书ID： ");
   scanf("%s", t_BookID);

   for (i = 0; i < g_BookCount; i++)
   {
       if (!strcmp(t_BookID, g_BookInfo[i].ID))//判断是否有这本书
       {
           if (g_BookInfo[i].BrowCount != 0)//如果这本书的借书次数不为0
           {
               printf("书已经借出！不能删除\n");
               return 0;
           }
           for (j = i; strlen(g_BookInfo[j].ID) != 0; j++)//后边的书的信息覆盖掉删除图书的信息
           {
               g_BookInfo[j] = g_BookInfo[j+1];
           }
           g_BookCount--;
           UpdateBookInfo();
           printf("删除成功！\n\n");
           return 1;
       }
   }

printf("ID不存在！\n");

return 0;
}

void ModifyBook()
{
   char t_BookID[7] = {0};
   printf("请输入要修改的图书ID： ");
   scanf("%s", t_BookID);
   int i = 0;
   int sel = 0;
   int t_Count = 0;
   char str[1024] = {0};

   for (i = 0; i < g_BookCount; i++)
   {
       if (!strcmp(t_BookID, g_BookInfo[i].ID))
       {
           if (g_BookInfo[i].BrowCount == 0)//在这本书并没有借走的情况，可以修改三个选项
           {
               printf("\t\t\t\t请问你要修改什么？\n");
               printf("1、图书简介\n");
               printf("2、图书总数量\n");
               printf("3、图书书架位置\n");
               printf("4、返回\n");
               printf("请输入： ");
               scanf("%d", &sel);
               if (sel == 1)
               {
                   printf("请输入修改的内容：\n");
                   scanf("%s", g_BookInfo[i].BookIntro);
               }
               else if (sel == 2)
               {
                   printf("请输入修改的总数量：\n");
                   scanf("%d", &t_Count);
                   if (t_Count < 0)
                   {
                       printf("数量设置不正确！\n");
                       return;
                   }
                   g_BookInfo[i].Count = t_Count;
               }
               else if (sel == 3)
               {
                   printf("请输入修改的书架位置：\n");
                   int row, col;
                   printf("排： ");
                   scanf("%d", &row);
                   printf("列： ");
                   scanf("%d", &col);
                   sprintf(str, "%d排%d列", row, col);
                   if (CheckIndex(str) == -1)
                   {
                       printf("书架位置已经有书！\n");
                       return;
                   }
                   strcpy(g_BookInfo[i].Index, str);//修改书架位置
               }
               else
               {
                   return;
               }
           }
           else//当此书被别人借走的时候
           {
               printf("请输入修改的总数量：\n");
               scanf("%d", &t_Count);
               if (t_Count < 0)
               {
                   printf("数量设置不正确！\n");
                   return;
               }
               g_BookInfo[i].Count = t_Count;
           }