📄 book.c
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#include "list.h"
void addbook() /* 新增图书*/
{
FILE *fp;
int i=0;
char choice='y';
fp=fopen("book.txt","a+");
while(choice=='y'||choice=='Y')
{
printf("请你输入第%d本书的序号\n",i+1);
scanf("%d",&book[i].booknum);
printf("请你输入书名\n");
scanf("%s",book[i].bookname);
printf("请你输入书的作者\n");
scanf("%s",book[i].bookcreat);
printf("请设为1或0，1代表书还没人借，0表示书已经借出，设其他值，程序运行时无法得出正常结果\n");
printf("请你设定书的状态\n");
scanf("%d",&book[i].turefalse);
fwrite(&book[i],sizeof(struct book),1,fp);
printf("是否要输入下本书'Y/N'\n");
scanf("%s",&choice);
}
fclose(fp);
}
void bookcount() /* 图书统计*/
{
FILE *fp;
int i,n=0;
fp=fopen("book.txt","r");
for(i=0;fread(&book[i],sizeof(struct book),1,fp)!=0;i++)
{
if(book[i].booknum!=0&&strlen(book[i].bookname)!=0&&strlen(book[i].bookcreat)!=0)
{
printf("第%d本书<序号：%d 书名：%s 作者：%s 状态：%d>\n",i+1,book[i].booknum,book[i].bookname,book[i].bookcreat,book[i].turefalse);
n=n+1;
}
}
fclose(fp);
printf("目前共有%d本书\n",n);
printf("按任意键\n");
}
void delbook() /* 删除图书*/
{
FILE *fp,*fp2;
int i;
char bookname[10],choice;
fp=fopen("book.txt","r");
fp2=fopen("bookl.txt","w"); //临时文件
printf("请输入你要删除的书名\n");
printf("如果你输入的书名存在，系统自动删除该信息！如果不存在，系统不做任何改动\n");
scanf("%s",bookname);
for(i=0;fread(&book[i],sizeof(struct book),1,fp)!=0;i++)
{//读文件成功
if(strcmp(bookname,book[i].bookname)!=0)
{ //不是被删除图书 写入临时文件
fwrite(&book[i],sizeof(struct book),1,fp2);
}
}
fclose(fp);
fclose(fp2);
printf("是否真的要删除该书籍？删除后该书籍的所有信息将无法恢复《Y/N》\n");
scanf("%s",&choice);
if(choice=='y'||choice=='Y')
{
fp=fopen("book.txt","w");
fp2=fopen("bookl.txt","r");
for(i=0;fread(&book[i],sizeof(struct book),1,fp2)!=0;i++)
{//将临时文件 写入book文件
fwrite(&book[i],sizeof(struct book),1,fp);
}
fclose(fp);
fclose(fp2);
fp2=fopen("bookl.txt","w");//清空临时文件
fclose(fp2);
printf("按任意键返回\n");
getch();
return;
}
else
{
fp2=fopen("bookl.txt","w");//清空临时文件
fclose(fp2);
printf("按任意键返回\n");
getch();
return;
}
}
void findbook() /* 按书名查找图书*/
{
FILE *fp;
char bookname[10];
int i;
fp=fopen("book.txt","r");
printf("请输入你要查找的书名\n");
scanf("%s",bookname);
for(i=0;fread(&book[i],sizeof(struct book),1,fp)!=0;i++)
{
if(strcmp(bookname,book[i].bookname)==0)
{
if(book[i].turefalse==1)
{
printf("这本书的详细资料是：%d %s %s 此书现在无人借阅\n",book[i].booknum,book[i].bookname,book[i].bookcreat);
}
else
{
printf("这本书已经有人借出\n");
fclose(fp);
return;
}
fclose(fp);
return;
}
}
printf("没有你要查询的书籍\n");
fclose(fp);
return;
}
void findbook1() /* 按作者查找图书*/
{
FILE *fp;
char bookcreat[10];
int i;
fp=fopen("book.txt","r");
printf("请输入你要查找的书的作者\n");
scanf("%s",bookcreat);
for(i=0;fread(&book[i],sizeof(struct book),1,fp)!=0;i++)
{
if(strcmp(bookcreat,book[i].bookcreat)==0)
{
if(book[i].turefalse==1)
{
printf("这本书的详细资料是：%d %s %s 此书现在无人借阅\n",book[i].booknum,book[i].bookname,book[i].bookcreat);
}
else
{
printf("这本书已经有人借出\n");
fclose(fp);
return;
}
fclose(fp);
return;
}
}
printf("没有你要查询的书籍\n");
fclose(fp);
return;
}
void lendbook() /* 借阅图书*/
{
FILE *fp,*fp2; /*定义两个文件指针，fp2用于修改数据时设立临时文件用，防止数据遭破坏*/
int i,n;
int carnum;
printf("请你输入你的卡号\n");
scanf("%d",&carnum);
fp=fopen("car.txt","r"); /*读取卡号记录*/
for(i=0;fread(&car[i],sizeof(struct car),1,fp)!=0;i++)
{ //核对卡号是否正确
if(car[i].carnum==carnum)
{
n=i; //记录卡号位置
fclose(fp);
printf("请输入你要借阅的书的名字\n");
scanf("%s",student[n].lendbook);
fp=fopen("book.txt","r"); //读取图书记录
for(i=0;fread(&book[i],sizeof(struct book),1,fp)!=0;i++)
{
if(strcmp(book[i].bookname,student[n].lendbook)==0)
{ //若找到该书
if(book[i].turefalse==0)
{//判断是否被借出
printf("对不起，此书有人借出，请借其他书\n");
fclose(fp);
getch();
return;
}
else
fclose(fp);
fp=fopen("record.txt","a+"); //读取借书记录
student[n].carnum=carnum; //记录借书学生卡号
fwrite(&student[n],sizeof(struct student),1,fp);
fclose(fp);
fp=fopen("book.txt","r");
fp2=fopen("bookl.txt","w");
for(i=0;fread(&book[i],sizeof(struct book),1,fp)!=0;i++)
{
if(strcmp(book[i].bookname,student[n].lendbook)==0)
{
book[i].turefalse=0; //设置被借出标志
fwrite(&book[i],sizeof(struct book),1,fp2);
continue;
}
fwrite(&book[i],sizeof(struct book),1,fp2); //保存图书副本
}
fclose(fp);
fclose(fp2);
fp=fopen("book.txt","w");
fp2=fopen("bookl.txt","r");
for(i=0;fread(&book[i],sizeof(struct book),1,fp2)!=0;i++)
{
fwrite(&book[i],sizeof(struct book),1,fp); //更新被借图书
}
fclose(fp);
fclose(fp2);
fopen("bookl.txt","w"); //清空临时文件book1
fclose(fp2);
printf("借书完毕，按任意键返回\n");
getch();
return;
} //end if 查找图书
} //end for
printf("不存在这样的书，任意键返回\n");
fclose(fp);
getch();
return;
} //end if 查找卡号
} //end for
printf("你的卡号不存在，请申请新卡,按任意键返回\n");
fclose(fp);
getch();
}
void huanbook() /*还书函数*/
{
FILE *fp,*fp2; /*定义两个文件指针，fp2用于修改数据时设立临时文件用，防止数据遭破坏*/
int i,n;
int carnum;
char lendbook[10];
printf("请你输入你的卡号\n");
scanf("%d",&carnum);
fp=fopen("car.txt","r"); /*读取卡号记录*/
for(i=0;fread(&car[i],sizeof(struct car),1,fp)!=0;i++) /*for循环判断卡号是否存在*/
{
if(car[i].carnum==carnum) /*卡号存在，进入下一循环*/
{
n=i;
fclose(fp);
printf("请输入你要还的书的名字\n");
scanf("%s",lendbook);
fp=fopen("record.txt","r");
for(i=0;fread(&student[i],sizeof(struct student),1,fp)!=0;i++)
{ /*判断是否借阅了输入的书*/
if(strcmp(student[i].lendbook,lendbook)==0)
{ /*借阅了该书，进入下一循环，否则出错显示*/
fclose(fp);
fp=fopen("record.txt","r");
fp2=fopen("bookl.txt","w");
for(i=0;fread(&student[i],sizeof(struct student),1,fp)!=0;i++)
{
if(strcmp(student[i].lendbook,lendbook)==0)
{
continue; /*删除还掉的书的借书记录*/
}
fwrite(&student[i],sizeof(struct student),1,fp2); /*写入原来没还的书的记录*/
}
fclose(fp);
fclose(fp2);
fp=fopen("record.txt","w");
fp2=fopen("bookl.txt","r");
for(i=0;fread(&student[i],sizeof(struct student),1,fp2)!=0;i++)
{
fwrite(&student[i],sizeof(struct student),1,fp); /*将借书记录信息写回*/
}
fclose(fp);
fclose(fp2);
fopen("bookl.txt","w"); /*清临时文件的记录*/
fclose(fp2);
fp=fopen("book.txt","r");
fp2=fopen("bookl.txt","w");
for(i=0;fread(&book[i],sizeof(struct book),1,fp)!=0;i++)
{ /*将书的记录写入临时文件，防止因为修改信息破坏以前的记录*/
if(i==n)
{
book[i].turefalse=1;
fwrite(&book[i],sizeof(struct book),1,fp2); /*将还的书的原来状态设为无人借阅的*/
continue;
}
fwrite(&book[i],sizeof(struct book),1,fp2);
}
fclose(fp);
fclose(fp2);
fp=fopen("book.txt","w");
fp2=fopen("bookl.txt","r");
for(i=0;fread(&book[i],sizeof(struct book),1,fp2)!=0;i++)
{
fwrite(&book[i],sizeof(struct book),1,fp); /*将临时文件写回*/
}
fclose(fp);
fclose(fp2);
fopen("bookl.txt","w"); /*清临时文件*/
fclose(fp2);
printf("还书完毕，按任意键返回\n");
getch();
return;
}
}
printf("你没有借这样的书，不要耍我，任意键返回\n"); /*出错提示*/
fclose(fp);
getch();
return;
}
}
printf("系统没这样的卡，和管理员联系,按任意键返回\n"); /*出错提示*/
fclose(fp);
getch();
}
void changebook() /* 修改图书信息*/
{
FILE *fp,*fp2;
char bookname[10],choice;
int i;
fp=fopen("book.txt","r");
fp2=fopen("bookl.txt","w");
printf("请你输入要修改的书籍的书字\n");
scanf("%s",bookname);
for(i=0;fread(&book[i],sizeof(struct book),1,fp)!=0;i++)
{
if(strcmp(book[i].bookname,bookname)==0)
{
printf("你所要修改的书的资料如下，请选择你要修改的内容\n");
printf("序号：〈%d〉 书名：〈%s〉 作者：〈%s〉 \n",book[i].booknum,book[i].bookname,book[i].bookcreat);
printf("1：修改书的序号\n");
printf("2：修改书名\n");
printf("3：修改作者\n");
printf("请输入1-3:");
scanf("%s",&choice);
switch(choice)
{
case '1':
{
printf("请输入新的序号\n");
scanf("%d",&book[i].booknum);
fwrite(&book[i],sizeof(struct book),1,fp2);
}break;
case '2':
{
printf("请输入新的书名\n");
scanf("%s",book[i].bookname);
fwrite(&book[i],sizeof(struct book),1,fp2);
}break;
case '3':
{
printf("请输入新的作者\n");
scanf("%s",book[i].bookcreat);
fwrite(&book[i],sizeof(struct book),1,fp2);
}break;
default:printf("没有这样的操作");break;
}
continue;
}
fwrite(&book[i],sizeof(struct book),1,fp2);
}
fclose(fp);
fclose(fp2);
fp=fopen("book.txt","w");
fp2=fopen("bookl.txt","r");
for(i=0;fread(&book[i],sizeof(struct book),1,fp2)!=0;i++)
{
fwrite(&book[i],sizeof(struct book),1,fp);
}
fclose(fp);
fclose(fp2);
fp2=fopen("bookl.txt","w");
fclose(fp2);
printf("按任意键返回\n");
getchar();
return;
}
void lendcount() /* 借书统计 */
{
FILE *fp;
int i,n=0;
fp=fopen("record.txt","r");
for(i=0;fread(&student[i],sizeof(struct student),1,fp)!=0;i++)
{
printf("卡号：%d 借出的书籍：%s \n",student[i].carnum,student[i].lendbook);
n=n+1;
}
fclose(fp);
printf("目前共有%d本书借出\n",n);
printf("按任意键\n");
getch();
}
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