C语言图书管理系统
ztaiyizzz 人气:0简介
c语言的一个大作业，发上来纪念下嘿嘿。写的不是很好，很多东西都揉在一起来，不过注释写的也挺多，希望能帮到有需要的朋友。
题目要求
简单文件数据库-模拟图书馆管理系统
涉及知识点：文件读写、内存管理、结构体定义、基本数据结构、高级格式化输入输出
要求：
编写一个程序模拟图书管理系统。用户分为管理员和读者两类，分别显示不同文本格式菜单，通过菜单项对应数字进行选择。读者菜单包括借书、还书、查询等功能。管理员菜单包括图书和读者信息录入、修改和删除。图书信息至少应包括：编号、书名、数量，读者信息至少应包括：编号、姓名、所借图书。可根据图书名称或编号进行图书信息查询，可查询某本书现在被哪些读者借走。
命令行参数如下：
Libsim –a(-u) xxxx
第一个参数为可执行程序名称；第二个参数为用户身份，-a表示管理员，-u表示读者；第三个参数为用户名
实现的功能
1． 管理员：
- 对图书进行管理：添加图书，修改图书名称、数量，删除图书。
- 对读者进行管理：添加读者，修改读者名称，删除读者.
- 一键查看全部书籍信息（序号，书名，剩余数量）
- 一键查看全部读者信息（序号，读者名，所借阅书籍）
- 单本图书详情查询：可根据序号和书名查找，向管理员展示图书序号、名称、剩余数量和借阅了此书的读者。
2． 读者：
- 借阅图书（只能同时借阅一本书）
- 还回图书
- 一键查看全部书籍信息（序号，书名，剩余数量）
readme
需要从cmd命令行运行程序，如图（注意格式）
管理员名：Zhang
进入管理员菜单格式：可执行程序名 -a Zhang (只设置了一个管理员，没有添加管理员的功能）
进入读者菜单格式：可执行程序名 -u 读者名 （需要先通过管理员添加读者）
默认生成的文件放在d盘根目录下（有时中间的过渡文件可能会没有被删除）
- Book.txt ：存放书籍信息
- Users.txt ：存放读者信息
代码
#include<stdio.h>
#include <io.h>
int bookNumber = 1; //全局变量 表示图书的序号
int usersNumber = 1; //表示读者编号
char enter; //接收换行符
//添加图书的函数
void addBook(FILE *Book)
{
FILE *Book1; //当文件和书本都存在时需要新建文件来更改信息
int judgeName = 0; //判断此书是否已经被存放
int num = 1, readNum, readNumber; //书本的数量 存放读到的书本数量 读到的书本序号
char name[20] = {0}, readName[20] = {0}; //存放图书名字 暂时存放读到的字符串名
printf("请输入要添加的图书名：");
for(int i = 0; i<20; i++) //从输入流取得需要添加的书本名字
{
if(i==0)
scanf("%c%c", &enter,&name[i]);
else
scanf("%c",&name[i]);
if(name[i]==10) //将最后的换行符改为空
{
name[i]=0;
break;
}
}
if(access("d:/Book.txt",F_OK)==0) //access函数判断文件是否存在，存在返回值为0 使用的头文件为io
{
judgeName = 1;
FILE *judge = fopen("d:/Book.txt", "r"); //读取数据文件，查找是否已经存在此书
while(!feof(judge))
{
fscanf(judge, "%d %s %d", &readNumber, readName, &readNum); //由于readName已经表示地址，不需要取地址符
fscanf(judge,"\n"); //读入换行符，准备下一行的读取
if(strcmp(name, readName)==0) //发现已经存在此书后跳出循环
{
judgeName = 2; //为2时表示已经存在此书，需要新建一个文件来更改信息
break;
}
}
fclose(judge); //关闭用于判断而打开的文件
bookNumber = readNumber+1;
if(judgeName==1)
Book = fopen("d:/Book.txt", "a"); //文件存在 且不存在相同书名时向后追加内容
else if(judgeName==2)
{
Book1 = fopen("d:/Book1.txt", "w"); //新建一个文件暂存Book中的信息，最后再返回源文件中
Book = fopen("d:/Book.txt","r"); //只读打开原本的文件
}
}
else
Book = fopen("d:/Book.txt","w"); //文件不存在时新建一个文件
if (judgeName<2)
{
fprintf(Book, "%d %s %d\n", bookNumber, name, num); //写入序号 书名 数量和换行符
bookNumber++;
fclose(Book);
}
else
{
while(!feof(Book))
{
fscanf(Book, "%d %s %d\n", &readNumber, readName, &readNum);
if(strcmp(name, readName)==0)
fprintf(Book1, "%d %s %d\n", readNumber, readName, readNum+1); //写入序号 书名 数量+1和换行符
else
fprintf(Book1, "%d %s %d\n", readNumber, readName, readNum); //写入序号 书名 数量和换行符
}
bookNumber++;
fclose(Book); //关闭文件
fclose(Book1);
Book1 = fopen("d:/Book1.txt", "r");
Book = fopen("d:/Book.txt", "w+"); //刷新原文件，再次写入正确数据
while(!feof(Book1))
{
fscanf(Book1, "%d %s %d\n", &readNumber, readName, &readNum);
fprintf(Book, "%d %s %d\n", readNumber, readName, readNum);
}
fclose(Book);
fclose(Book1);
remove("d:/Book1.txt"); //删除原文件
//rename("d:/Book1.txt", "d:/Book.txt"); //将更改后的文件改名为原数据文件
}
printf("添加成功！\n");
}
//修改图书信息函数
void changeBook(FILE *Book)
{
while(1)
{
char name[20] = {0}, readName[20] = {0};
printf(" Edit Book Information \n");
printf("[------------------------------------------]\n");
printf("\t请选择需要修改的信息：\n 1.修改图书名称\n 2.修改图书数量\n 3.返回主菜单\n");
printf("[------------------------------------------]\n");
int function, readNumber, readNum, find = 0; //功能选择 读取到的序号 读取到的数量 是否找到此书
//判断修改后的书名是否和原有的重复
Book = fopen("d:/Book.txt","r"); //只读打开原文件
int ifNumber, ifNum;
char ifName[20] = {0};
FILE *ifUserExisted = fopen("d:/Users1.txt","w");
while(!feof(Book))
{
fscanf(Book, "%d %s %d\n", &ifNumber, ifName, &ifNum);
fprintf(ifUserExisted, "%d %s %d\n", &ifNumber, ifName, ifNum);
}
fclose(ifUserExisted);
fclose(Book);
scanf("%d",&function);
if(function == 3)
{
remove("d:/Book1.txt"); //有时会多余创造了文件，需要删除
return;
}
Book = fopen("d:/Book.txt","r"); //只读打开原文件
FILE *Book1 = fopen("d:/Book1.txt", "w"); //先新建一个文件存储更改后的信息
printf("请输入需要更改的图书名：");
for(int i = 0; i<20; i++) //从输入流取得需要添加的书本名字
{
if(i==0)
scanf("%c%c", &enter,&name[i]);
else
scanf("%c",&name[i]);
if(name[i]==10) //将最后的换行符改为空
{
name[i]=0;
break;
}
}
if(function==1)
{
while(!feof(Book))
{
fscanf(Book, "%d %s %d\n", &readNumber, readName, &readNum);
if(strcmp(name, readName)==0)
{
find = 1; //找到了此书
printf("您要将书名%s更改为：", name);
char changeName[20] = {0};
for(int i = 0; i<20; i++) //从输入流取得需要更改的书本名字
{
if(i==0)
scanf("%c",&changeName[i]);
else
scanf("%c",&changeName[i]);
if(changeName[i]==10) //将最后的换行符改为空
{
changeName[i]=0;
break;
}
}
ifUserExisted = fopen("d:/Users1.txt","r"); //判断更改后的名字是否会和已存在的书名冲突
while(!feof(ifUserExisted))
{
fscanf(ifUserExisted, "%d %s %d\n", &ifNumber, ifName, &ifNum);
if (strcmp(changeName, ifName)==0)
{
printf("更改失败：已存在名称为%s的图书\n", changeName);
fclose(ifUserExisted);
fclose(Book); //关闭文件
fclose(Book1);
return;
}
}
fprintf(Book1, "%d %s %d\n", readNumber, changeName, readNum); //写入序号 更改后的书名 数量和换行符
}
else
fprintf(Book1, "%d %s %d\n", readNumber, readName, readNum); //写入序号 书名 数量和换行符
}
if(find==0) //若没找到此书
{
printf("没有找到此书！请重新输入\n");
break;
}
fclose(Book); //关闭文件
fclose(Book1);
Book1 = fopen("d:/Book1.txt", "r");
Book = fopen("d:/Book.txt", "w+"); //刷新原文件，再次写入正确数据
while(!feof(Book1))
{
fscanf(Book1, "%d %s %d\n", &readNumber, readName, &readNum);
fprintf(Book, "%d %s %d\n", readNumber, readName, readNum);
}
fclose(Book);
fclose(Book1);
remove("d:/Book1.txt"); //删除原文件
//rename("d:/Book1.txt", "d:/Book.txt"); //将更改后的文件改名为原数据文件 此方法成功率低！！！
printf("更改成功!\n");
}
else if(function == 2)
{
while(!feof(Book))
{
fscanf(Book, "%d %s %d\n", &readNumber, readName, &readNum);
if(strcmp(name, readName)==0)
{
find = 1; //找到了此书
printf("您要将数量%d更改为：", readNum);
int newNum = 0;
scanf("%d",&newNum);
fprintf(Book1, "%d %s %d\n", readNumber, readName, newNum); //写入序号 书名 更改后的数量和换行符
}
else
fprintf(Book1, "%d %s %d\n", readNumber, readName, readNum); //写入序号 书名 数量和换行符
}
if(find==0) //若没找到此书
{
printf("没有找到此书！请重新输入");
break;
}
fclose(Book); //关闭文件
fclose(Book1);
Book1 = fopen("d:/Book1.txt", "r");
Book = fopen("d:/Book.txt", "w+"); //刷新原文件，再次写入正确数据
while(!feof(Book1))
{
fscanf(Book1, "%d %s %d\n", &readNumber, readName, &readNum);
fprintf(Book, "%d %s %d\n", readNumber, readName, readNum);
}
fclose(Book);
fclose(Book1);
remove("d:/Book1.txt"); //删除原文件
//rename("d:/Book1.txt", "d:/Book.txt"); //将更改后的文件改名为原数据文件 此方法易出现问题！！！
printf("更改成功!\n");
}
else
{
printf("输入格式有误，请重新输入！");
break;
}
}
}
//删除书籍的函数
void delBook(FILE *Book)
{
while(1)
{
printf("请输入您想删除的图书名：(输入\"-r\"返回上一级)");
char delName[20] = {0};
for(int i = 0; i<20; i++) //从输入流取得需要删除的书本名字
{
//if(i==0)
// scanf("%c%c", &enter,&delName[i]);
//else
scanf("%c",&delName[i]);
if(delName[i]==10) //将最后的换行符改为空
{
delName[i]=0;
break;
}
}
if(strcmp(delName, "-r")==0) //输入返回上一级的指示后返回
return;
int readNumber, readNum, find = 0;
char readName[20] = {0};
Book = fopen("d:/Book.txt","r");
FILE *Book1 = fopen("d:/Book1.txt","w");
while (!feof(Book))
{
fscanf(Book, "%d %s %d\n", &readNumber, readName, &readNum);
if(strcmp(delName, readName)==0)
{
find = 1; //找到了此书
//因为要删除此条信息，所以不再向新文件中输出它
}
else
{
if(find==1)
fprintf(Book1, "%d %s %d\n", readNumber-1, readName, readNum); //排在删除后的写入-1的序号 书名 数量和换行符
else
fprintf(Book1, "%d %s %d\n", readNumber, readName, readNum); //删除前的写入的序号 书名 数量和换行符
}
}
if(find==0) //若没找到此书
{
printf("没有找到此书！请重新输入\n");
continue;
}
fclose(Book);
fclose(Book1);
Book1 = fopen("d:/Book1.txt", "r");
Book = fopen("d:/Book.txt", "w+"); //刷新原文件，再次写入正确数据
while(!feof(Book1))
{
fscanf(Book1, "%d %s %d\n", &readNumber, readName, &readNum);
fprintf(Book, "%d %s %d\n", readNumber, readName, readNum);
}
fclose(Book);
fclose(Book1);
remove("d:/Book1.txt"); //删除原文件
printf("删除成功!\n");
}
}
//展示全部图书的函数
void showBook(FILE *Book)
{
printf(" Library \n");
printf("[------------------------------------------]\n");
printf("\t序号\t书名\t\t数量\n");
char readName[20] = {0};
int readNumber, readNum;
Book = fopen("d:/Book.txt", "r");
while(!feof(Book))
{
fscanf(Book, "%d %s %d\n", &readNumber, readName, &readNum);
printf("\t%d\t%s\t\t%d\n",readNumber, readName, readNum);
}
fclose(Book);
printf("[------------------------------------------]\n");
}
//向管理员展示全部用户的函数
void showUsers(FILE *Users)
{
printf(" Users \n");
printf("[------------------------------------------]\n");
printf("\t序号\t姓名\t所借阅图书\n");
char readName[20] = {0}, borrowBook[20] = {0};
int readNumber;
Users = fopen("d:/Users.txt", "r");
while(!feof(Users))
{
fscanf(Users, "%d %s %s\n", &readNumber, readName, borrowBook);
printf("\t%d\t%s\t%s\n",readNumber, readName, borrowBook);
}
fclose(Users);
printf("[------------------------------------------]\n");
}
//添加用户函数
void addUsers(FILE *Users)
{
FILE *Users1; //当文件和用户都存在时需要新建文件来更改信息
int judgeName = 0; //判断此用户是否已经存在
int num = 1, readNumber; // 存放读到的书本数量 读到的用户序号
char name[20] = {0}, readName[20] = {0}, borrowBook[20] = {"None"},readBorrowBook[20] = {"None"}; //存放用户名字 暂时存放读到的字符串名
printf("请输入要添加的用户名：");
for(int i = 0; i<20; i++) //从输入流取得需要添加的用户名
{
if(i==0)
scanf("%c%c", &enter,&name[i]);
else
scanf("%c",&name[i]);
if(name[i]==10) //将最后的换行符改为空
{
name[i]=0;
break;
}
}
if(access("d:/Users.txt",F_OK)==0) //access函数判断文件是否存在，存在返回值为0 使用的头文件为io
{
judgeName = 1;
FILE *judge = fopen("d:/Users.txt", "r"); //读取数据文件，查找是否已经存在此用户
while(!feof(judge))
{
fscanf(judge, "%d %s %s", &readNumber, readName, readBorrowBook); //由于readName已经表示地址，不需要取地址符
fscanf(judge,"\n"); //读入换行符，准备下一行的读取
if(strcmp(name, readName)==0) //发现已经存在此用户后跳出循环
{
printf("已经存在此用户，无法添加。"); //已经存在此用户，返回
return;
}
}
fclose(judge); //关闭用于判断而打开的文件
usersNumber = readNumber+1;
if(judgeName==1)
Users = fopen("d:/Users.txt", "a"); //文件存在 且不存在相同用户时向后追加内容
}
else
Users = fopen("d:/Users.txt","w"); //文件不存在时新建一个文件
fprintf(Users, "%d %s %s\n", usersNumber, name, borrowBook); //写入序号 用户名 所借书和换行符
usersNumber++;
fclose(Users);
printf("添加成功！\n");
}
//修改读者信息函数
void changeUsers(FILE *Users)
{
while(1)
{
char name[20] = {0}, readName[20] = {0}, borrowBook[20] = {"None"};
printf(" Edit Reader Name \n");
printf("[------------------------------------------]\n");
printf("\t请选择需要修改的信息：\n 1.修改读者名称\n 2.返回主菜单\n");
printf("[------------------------------------------]\n");
int function, readNumber, find = 0; //功能选择 读取到的序号 是否找到此书
Users = fopen("d:/Users.txt","r"); //只读打开原文件
//此处创建ifUserExisted，一会用于查找是否存在相同的名字
int ifNumber;
char ifName[20] = {0}, ifBorrow[20] = {0};
FILE *ifUserExisted = fopen("d:/Book1.txt","w");
while(!feof(Users))
{
fscanf(Users, "%d %s %s\n", &ifNumber, ifName, ifBorrow);
fprintf(ifUserExisted, "%d %s %s\n", &ifNumber, ifName, ifBorrow);
}
fclose(ifUserExisted);
fclose(Users);
Users = fopen("d:/Users.txt","r"); //只读打开原文件
scanf("%d",&function);
if(function == 2)
{
remove("d:/Users1.txt"); //有时会多余创造了文件，需要删除
return;
}
FILE *Users1 = fopen("d:/Users1.txt", "w"); //先新建一个文件存储更改后的信息
printf("请输入需要更改的用户名：");
for(int i = 0; i<20; i++) //从输入流取得需要更改的读者名字
{
if(i==0)
scanf("%c%c", &enter,&name[i]);
else
scanf("%c",&name[i]);
if(name[i]==10) //将最后的换行符改为空
{
name[i]=0;
break;
}
}
if(function==1)
{
while(!feof(Users))
{
fscanf(Users, "%d %s %s\n", &readNumber, readName, borrowBook);
if(strcmp(name, readName)==0)
{
find = 1; //找到了此读者
printf("您要将读者名\"%s\"更改为：", name);
char changeName[20] = {0};
for(int i = 0; i<20; i++) //从输入流取得需要更改的用户名字
{
if(i==0)
scanf("%c",&changeName[i]);
else
scanf("%c",&changeName[i]);
if(changeName[i]==10) //将最后的换行符改为空
{
changeName[i]=0;
break;
}
}
ifUserExisted = fopen("d:/Book1.txt","r"); //判断更改后的名字是否会和存在的用户名冲突
while(!feof(ifUserExisted))
{
fscanf(ifUserExisted, "%d %s %s\n", &ifNumber, ifName, ifBorrow);
if (strcmp(changeName, ifName)==0)
{
printf("更改失败：已存在名称为%s的读者\n", changeName);
fclose(ifUserExisted);
fclose(Users); //关闭文件
fclose(Users1);
return;
}
}
fprintf(Users1, "%d %s %s\n", readNumber, changeName, borrowBook); //写入序号 更改后的读者名 所借书籍和换行符
}
else
fprintf(Users1, "%d %s %s\n", readNumber, readName, borrowBook); //写入序号 书名 数量和换行符
}
if(find==0) //若没找到此读者
{
printf("没有找到此读者！请重新输入\n");
break;
}
fclose(Users); //关闭文件
fclose(Users1);
Users1 = fopen("d:/Users1.txt", "r");
Users = fopen("d:/Users.txt", "w+"); //刷新原文件，再次写入正确数据
while(!feof(Users1))
{
fscanf(Users1, "%d %s %s\n", &readNumber, readName, borrowBook);
fprintf(Users, "%d %s %s\n", readNumber, readName, borrowBook);
}
fclose(Users);
fclose(Users1);
remove("d:/Users1.txt"); //删除原文件
//rename("d:/Book1.txt", "d:/Book.txt"); //将更改后的文件改名为原数据文件 此方法成功率低！！！
printf("更改成功!\n");
}
else
{
printf("输入格式有误，请重新输入！\n");
break;
}
}
}
//删除用户的函数
void delUsers(FILE *Users)
{
while(1)
{
printf("请输入您想删除的读者名：(输入\"-r\"返回上一级)");
char delName[20] = {0};
for(int i = 0; i<20; i++) //从输入流取得需要删除的用户名字
{
//if(i==0)
// scanf("%c%c", &enter,&delName[i]);
//else
scanf("%c",&delName[i]);
if(delName[i]==10) //将最后的换行符改为空
{
delName[i]=0;
break;
}
}
if(strcmp(delName, "-r")==0) //输入返回上一级的指示后返回
return;
int readNumber, find = 0;
char readName[20] = {0}, borrowBook[20] = {"None"};
Users = fopen("d:/Users.txt","r");
FILE *Users1 = fopen("d:/Users1.txt","w");
while (!feof(Users))
{
fscanf(Users, "%d %s %s\n", &readNumber, readName, borrowBook);
if(strcmp(delName, readName)==0)
{
find = 1; //找到了此读者
//因为要删除此条信息，所以不再向新文件中输出它
}
else
{
if(find==1)
fprintf(Users1, "%d %s %s\n", readNumber-1, readName, borrowBook); //排在删除后的写入-1的序号 读者名 所借书和换行符
else
fprintf(Users1, "%d %s %s\n", readNumber, readName, borrowBook); //删除前的写入的序号 读者名 所借书和换行符
}
}
if(find==0) //若没找到此读者
{
printf("没有找到此读者！请重新输入\n");
continue;
}
fclose(Users1);
fclose(Users);
Users1 = fopen("d:/Users1.txt", "r");
Users = fopen("d:/Users.txt", "w+"); //刷新原文件，再次写入正确数据
while(!feof(Users1))
{
fscanf(Users1, "%d %s %s\n", &readNumber, readName, borrowBook);
fprintf(Users, "%d %s %s\n", readNumber, readName, borrowBook);
}
fclose(Users1);
fclose(Users);
remove("d:/Users1.txt"); //删除原文件
printf("删除成功!\n");
}
}
//借阅函数
void borrowBooking(char readerName[])
{
printf("请输入您想借阅的图书名：");
char name[20] = {0};
for(int i = 0; i<20; i++) //从输入流取得图书名
{
if(i==0)
scanf("%c%c", &enter,&name[i]);
else
scanf("%c",&name[i]);
if(name[i]==10) //将最后的换行符改为空
{
name[i]=0;
break;
}
}
char readName[20] = {0};
int readNumber, readNum, find = 0;
//更改被借阅的图书的信息
FILE *Book = fopen("d:/Book.txt", "r");
FILE *Book1 = fopen("d:/Book1.txt", "w");
while (!feof(Book))
{
fscanf(Book, "%d %s %d\n", &readNumber, readName, &readNum);
if(strcmp(name, readName)==0)
{
find = 1;
if(readNum<1)
{
printf("借阅失败:无剩余可借阅的%s！\n", readName);
return;
}
fprintf(Book1, "%d %s %d\n", readNumber, readName, readNum-1); //若找到需要借阅的图书，则在此书数量上减1
}
else
fprintf(Book1, "%d %s %d\n", readNumber, readName, readNum); //删除前的写入的序号 读者名 所借书和换行符
}
if(find==0) //若没找到此书
{
printf("借阅失败:没有找到此书！\n");
return;
}
fclose(Book);
fclose(Book1);
Book1 = fopen("d:/Book1.txt", "r");
Book = fopen("d:/Book.txt", "w+"); //刷新原文件，再次写入正确数据
while(!feof(Book1))
{
fscanf(Book1, "%d %s %d\n", &readNumber, readName, &readNum);
fprintf(Book, "%d %s %d\n", readNumber, readName, readNum);
}
fclose(Book1);
fclose(Book);
remove("d:/Book1.txt"); //删除原文件
//更改读者的信息
FILE *Users = fopen("d:/Users.txt", "r");
FILE *Users1 = fopen("d:/Users1.txt", "w");
char borrowBook[20] = {"None"};
while (!feof(Users))
{
fscanf(Users, "%d %s %s\n", &readNumber, readName, borrowBook);
if(strcmp(readerName, readName)==0)
fprintf(Users1, "%d %s %s\n", readNumber, readName, name); //在读者的借阅图书上写上所借阅的图书名
else
fprintf(Users1, "%d %s %s\n", readNumber, readName, borrowBook);
}
fclose(Users1);
fclose(Users);
Users1 = fopen("d:/Users1.txt", "r");
Users = fopen("d:/Users.txt", "w+"); //刷新原文件，再次写入正确数据
while(!feof(Users1))
{
fscanf(Users1, "%d %s %s\n", &readNumber, readName, borrowBook);
fprintf(Users, "%d %s %s\n", readNumber, readName, borrowBook);
}
fclose(Users1);
fclose(Users);
remove("d:/Users1.txt"); //删除原文件 有时候还是删不掉
printf("借阅成功！\n");
}
//还书函数
void returnBooking(char readerName[], char borrowBook[])
{
char readName[20] = {0};
int readNumber, readNum, find = 0;
//更改被还回的图书的信息
FILE *Book = fopen("d:/Book.txt", "r");
FILE *Book1 = fopen("d:/Book1.txt", "w");
while (!feof(Book))
{
fscanf(Book, "%d %s %d\n", &readNumber, readName, &readNum);
if(strcmp(borrowBook, readName)==0)
{
fprintf(Book1, "%d %s %d\n", readNumber, readName, readNum+1); //若找到被还的图书，则在此书数量上加1
find = 1;
}
else
fprintf(Book1, "%d %s %d\n", readNumber, readName, readNum); //不是还回的书
}
fclose(Book);
fclose(Book1);
Book1 = fopen("d:/Book1.txt", "r");
Book = fopen("d:/Book.txt", "w+"); //刷新原文件，再次写入正确数据
while(!feof(Book1))
{
fscanf(Book1, "%d %s %d\n", &readNumber, readName, &readNum);
fprintf(Book, "%d %s %d\n", readNumber, readName, readNum);
}
bookNumber = readNumber+1;
fclose(Book1);
fclose(Book);
remove("d:/Book1.txt"); //删除原文件
if(find==0) //还书时没有书城中没有此书，直接添加一本
{
FILE *Book;
Book = fopen("d:/Book.txt", "a");
fprintf(Book, "%d %s 1\n", bookNumber, borrowBook); //写入序号 书名 数量和换行符
bookNumber++;
fclose(Book);
}
//更改读者的信息
FILE *Users = fopen("d:/Users.txt", "r");
FILE *Users1 = fopen("d:/Users1.txt", "w");
char rborrowBook[20] = {"None"};
while (!feof(Users))
{
fscanf(Users, "%d %s %s\n", &readNumber, readName, rborrowBook);
if(strcmp(readerName, readName)==0)
fprintf(Users1, "%d %s %s\n", readNumber, readName, "None"); //还回书后所借阅图书变为"None"
else
fprintf(Users1, "%d %s %s\n", readNumber, readName, rborrowBook);
}
fclose(Users1);
fclose(Users);
Users1 = fopen("d:/Users1.txt", "r");
Users = fopen("d:/Users.txt", "w+"); //刷新原文件，再次写入正确数据
while(!feof(Users1))
{
fscanf(Users1, "%d %s %s\n", &readNumber, readName, rborrowBook);
fprintf(Users, "%d %s %s\n", readNumber, readName, rborrowBook);
}
fclose(Users1);
fclose(Users);
remove("d:/Users1.txt"); //删除原文件 有时候还是删不掉
printf("成功还回%s\n", borrowBook);
}
//单独查询功能，根据编号或书名查询书被哪些人借走
void searchBook()
{
while (1)
{
int function = 0;
FILE *Book = fopen("d:/Book.txt", "r");
FILE *Users = fopen("d:/Users.txt", "r");
char readerName[20] = {0}, bookName[20] = {0}, borrowBook[20] = {0}, name[20] = {0};
int bookNumber, bookNum, find = 0, readerNumber;
printf(" Search \n");
printf("[------------------------------------------]\n");
printf("\t\t请选择查询功能：\n\t1.根据编号查询\n\t2.根据书名查询\n\t3.返回主界面\n");
printf("[------------------------------------------]\n");
scanf("%d",&function); // 输入需要的功能
switch (function)
{
case 1:
printf("您要查找的书序号是：");
scanf("%d",&function); // 输入需要查找的图书编号
while(!feof(Book))
{
fscanf(Book, "%d %s %d\n", &bookNumber, bookName, &bookNum); //由于bookName已经表示地址，不需要取地址符
if(bookNumber==function) //发现查找的书后跳出循环
{
find = 1;//找到书
break;
}
}
if(find==0)
{
printf("没有找到编号为%d的图书。\n",function);
break;
}
printf(" Search Result \n");
printf("[------------------------------------------]\n");
find = 0;//需要在查找谁借阅时再次使用
printf("\t编号：\t\t%d\n\t书名：\t\t%s\n\t剩余数量：\t%d\n\t",bookNumber, bookName, bookNum);
while (!feof(Users))
{
fscanf(Users, "%d %s %s\n", &readerNumber, readerName, borrowBook);//遍历读者查找谁借阅了这本书
if (strcmp(borrowBook, bookName)==0)
{
if(find==0)
{
find = 1;
printf("借阅此书的读者：");
printf("%s",readerName);
}
else
printf(" ,%s",readerName);
}
}
if(find==0)
printf("还没有读者借阅此书。\n");
else
printf("\n");
printf("[------------------------------------------]\n");
printf("输入回车返回...\n");
enter = getchar();
enter = getchar();
break;
case 2:
printf("您要查找的书名是：");
scanf("%s",name); // 输入需要查找的图书名
while(!feof(Book))
{
fscanf(Book, "%d %s %d\n", &bookNumber, bookName, &bookNum); //由于bookName已经表示地址，不需要取地址符
if(strcmp(bookName, name)==0) //发现查找的书后跳出循环
{
find = 1;//找到书
break;
}
}
if(find==0)
{
printf("没有找到名称为%s的图书。\n",name);
break;
}
printf(" Search Result \n");
printf("[------------------------------------------]\n");
find = 0;//需要在查找谁借阅时再次使用
printf("\t编号：\t\t%d\n\t书名：\t\t%s\n\t剩余数量：\t%d\n\t",bookNumber, bookName, bookNum);
while (!feof(Users))
{
fscanf(Users, "%d %s %s\n", &readerNumber, readerName, borrowBook);//遍历读者查找谁借阅了这本书
if (strcmp(borrowBook, bookName)==0)
{
if(find==0)
{
find = 1;
printf("借阅此书的读者：");
printf("%s",readerName);
}
else
printf(" ,%s",readerName);
}
}
if(find==0)
printf("还没有读者借阅此书。\n");
else
printf("\n");
printf("[------------------------------------------]\n");
printf("输入回车返回...\n");
enter = getchar();
enter = getchar();
break;
case 3:
return;
default:
printf("您输入的格式有误，请重新输入\n");
break;
}
fclose(Book);
fclose(Users);
}
}
int main(int argc, char *argv[]) //需要从命令行读入参数
{
char identity1[] = "-u"; //读者身份
char identity2[] = "-a"; //管理员身份
FILE *Book, *Users; //两个文件分别存储图书信息和读者信息。
int function1, function2; //功能选项
/*调试用
char readerName[20] = {0};
int test = 0;
scanf("%d %s",&test, readerName);
if(test==1)
*/
if(strcmp(argv[1], identity2)==0) //管理员操作界面
{
char Administrator[20] = "Zhang";
if(strcmp(Administrator, argv[2])==0)
{
while(1)
{
printf(" menu \n");
printf("[------------------------------------------]\n");
printf(" 管理员您好！请选择您要使用的功能:\n 1.新增或修改图书信息\n 2.新增或修改读者信息\n 3.查看全部馆藏书籍\n 4.查看全部读者及其借阅信息\n 5.图书详情查询\n 6.结束程序\n");
printf("[------------------------------------------]\n");
scanf("%d",&function1);
switch (function1)
{
case 1: //更改图书信息
printf(" Books \n");
printf("[------------------------------------------]\n");
printf("\t请选择要对图书进行的操作：\n 1.添加图书信息\n 2.修改图书信息\n 3.删除图书信息\n 4.返回主菜单\n");
printf("[------------------------------------------]\n");
scanf("%d",&function2); //输入第二级操作指令
switch (function2)
{
case 1:
addBook(Book); //调用添加图书函数
break;
case 2:
changeBook(Book); //修改函数
break;
case 3:
scanf("%c",&enter);
delBook(Book); //删除函数
break;
case 4:
break;
default:
printf("输入的值令有误，请重新输入");
break;
}
break;
case 2: //更改读者信息
printf(" Readers \n");
printf("[------------------------------------------]\n");
printf("\t请选择要对用户进行的操作：\n 1.添加用户信息\n 2.修改用户信息\n 3.删除用户信息\n");
printf("[------------------------------------------]\n");
scanf("%d",&function2); //输入第二级操作指令
switch (function2)
{
case 1:
addUsers(Users); //添加用户信息
break;
case 2:
changeUsers(Users); //修改用户信息
break;
case 3:
scanf("%c",&enter);
delUsers(Users); //删除用户信息
break;
default:
printf("输入的值令有误，请重新输入");
break;
}
break;
case 3:
showBook(Book);
printf("输入回车返回...\n");
enter = getchar();
enter = getchar();
break;
case 4:
showUsers(Users);
printf("输入回车返回...\n");
enter = getchar();
enter = getchar();
break;
case 5:
searchBook();
break;
case 6:
printf("感谢您的使用，再见！");
return 0;
default:
printf("输入格式有误，请重新输入!");
break;
}
}
}
else
printf("管理员名有误，请重新输入！");
}
/*
else if(test == 2)
*/
else if (strcmp(argv[1], identity1)==0) //读者的操作界面
{
char readName[20] = {0}, borrowBook[20] = {"None"};
int readNumber,find = 0;
FILE *Users = fopen("d:/Users.txt","r"); //需要判断是否存在此用户
while (!feof(Users))
{
fscanf(Users, "%d %s %s\n", &readNumber, readName, borrowBook);
if(strcmp(argv[2], readName)==0)
{
find = 1;
break;
}
}
fclose(Users);
if(find==0)
{
printf("不存在用户名为%s的读者！", argv[2]);
return 0;
}
while (1)
{
FILE *Users = fopen("d:/Users.txt","r"); //刷新用户的借阅信息
while (!feof(Users))
{
fscanf(Users, "%d %s %s\n", &readNumber, readName, borrowBook);
if(strcmp(argv[2], readName)==0)
break;
}
fclose(Users);
printf(" menu \n");
printf("[------------------------------------------]\n");
printf("\t读者%s您好！请选择您要使用的功能:\n 1.借阅图书\n 2.还回图书\n 3.查看全部馆藏书籍\n 4.结束程序\n", argv[2]);
printf("[------------------------------------------]\n");
scanf("%d",&function1);
switch (function1)
{
case 1: //借阅图书
if(strcmp(borrowBook, "None")==0)
borrowBooking(argv[2]);
else
printf("您已经借阅图书，请先还书再进行借阅操作。\n");
printf("输入回车返回...\n");
enter = getchar();
enter = getchar();
break;
case 2: //还书
if(strcmp(borrowBook, "None")!=0)
returnBooking(argv[2], borrowBook);
else
printf("您当前还没有借阅图书。\n");
printf("输入回车返回...\n");
enter = getchar();
enter = getchar();
break;
case 3:
showBook(Book);
printf("输入回车返回...\n");
enter = getchar();
enter = getchar();
break;
case 4:
printf("感谢您的使用，再见！");
return 0;
default:
printf("输入格式有误，请重新输入!");
break;
}
}
}
else
printf("您输入的格式有误，请重新输入!");
return 0;
}加载全部内容