|
#include<stdio.h>
#include<stdlib.h>
#include<string.h>
//图书结构体
struct book1
{
char isbn[20];//编号
char name[20];//书名
char userName[20];//借书用户
char userBook[20];//所借书籍
char userTime[20];//借书时间
char author[20];//作者
int amount;//库存量
};
struct book
{
struct book1 book1;//图书信息结构体
struct book *next;
};
void bookManagement();//主界面
void addBook();//增加书籍
void show();
struct book *read();//读取文件存储到链表内
void write(struct book *head);//写入书籍
void deleteBook();//删除 书籍
void showBook();//显示书籍
void changeBook();//修改书籍
void findBook();//查找书籍
void addInventory();//增加库存
void lendBook();//借书
void lendWrite();//借书写入文件
void lendDisplay();//借书信息
void returnBook();//还书
int main()
{
bookManagement();//主界面
system(“pause”);
return 0;
}
void bookManagement()
{
FILE fp;
int n=1;
while(n!=0)
{
printf("-------------------图书管理系统-----------------\n");
printf(" \n");
printf(" *\n");
printf("*1.增加图书\t2.删除图书\t3.修改图书信息 *\n");
printf("*4.显示图书\t5.查找图书\t6.增加库存 *\n");
printf(“7.借书 \t8.还书 \t9.借阅情况 \n");
printf(" \n");
printf("------------------------------------------------\n”);
printf("\n");
printf(“请选择功能，退出请按0:”);
scanf("%d",&n);
fp=fopen(“libraries.txt”,“r”);
if((n>=3&&n<=9)&&(fp==NULL||fgetc(fp)EOF))
{
printf(“没有书籍\n”);
system(“pause”);
}
else
{
switch(n)
{
case 1:addBook();break;
case 2:deleteBook();break;
case 3:changeBook();break;
case 4:showBook();break;
case 5:findBook();break;
case 6:addInventory();break;
case 7:lendBook();break;
case 8:returnBook();break;
case 9:lendDisplay();break;
}
}
fclose(fp);
}
printf("\n");
if(n0)
printf(“您已成功退出图书管理系统！\n”);
}
void addBook() //添加书籍
{
struct book *p=NULL,*p1=NULL,*head=NULL,p2;
char n=1;
system(“cls”);
printf(“编号 书名 作者 数量\n”);
p=head=read();
p2=(struct book)malloc(sizeof(struct book));
scanf("%s%s%s%d",p2->book1.isbn,p2->book1.name,p2->book1.author,&p2->book1.amount);
while§
{
if(strcmp(p->book1.name,p2->book1.name)0)
{
p->book1.amount++;
printf(“添加成功\n”);
printf(“原书籍数量增加\n”);
break;
}
else
p=p->next;
}
if(headNULL)
head=p2;
else
{
p1=head;
while(p1->next!=NULL)
p1=p1->next;
p1->next=p2;
p2->next=NULL;
}
write(head);
n=getchar();
printf(“书籍添加成功\n”);
show();
system(“pause”);
}
void show() //显示所有书籍
{
struct book1 book1;
FILE *fp;
//system(“cls”);
printf(“图书馆藏书\n”);
printf("\n");
fp=fopen(“libraries.txt”,“r”);
if(!fp)
{
printf(“文件打开失败\n”);
exit(0);
}
else
{
printf(“编号 书名 作者 数量\n”);
while(fscanf(fp,"%s%s%s%d",book1.isbn,book1.name,book1.author,&book1.amount)!=EOF)
{
printf("%-20s%-15s%-15s%-14d\n",book1.isbn,book1.name,book1.author,book1.amount);
}
}
fclose(fp);
printf("\n");
}
struct book* read() //取数据存放在链表
{
FILE *fp;
struct book1 book1;
struct book *p,*tail=NULL,head=NULL;
fp=fopen(“libraries.txt”,“r”);
if(!fp)
{
printf(“文件打开失败\n”);
exit(0);
}
while(fscanf(fp,"%s%s%s%d",book1.isbn,book1.name,book1.author,&book1.amount)!=EOF)
{
p=(struct book)malloc(sizeof(struct book));
p->book1=book1;
if(head==NULL)
head=p;
if(tail!=NULL)
tail->next=p;
tail=p;
tail->next=NULL;
}
fclose(fp);
return head;
}
void write(struct book *head) //写入文件
{
FILE *fp;
struct book *p=NULL;
fp=fopen(“libraries.txt”,“w”);
if(!fp)
{
printf(“文件打开失败\n”);
exit(0);
}
p=head;
while§
{
fprintf(fp,"%-20s%-15s%-15s%-14d",p->book1.isbn,p->book1.name,p->book1.author,p->book1.amount);
p=p->next;
if(p == NULL){
break;
}
}
fclose(fp);
}
void deleteBook() //删除书籍
{
struct book *p1=NULL,*p2=NULL,*head=NULL;
char name[20]={’\0’};
char ch;
p1=p2=head=read();
system(“cls”);
show();
printf("\n");
printf(“输入要删除的书籍名称:”);
scanf("%s",name);
while(strcmp(p1->book1.name,name)!=0&&p1!=NULL)
p1=p1->next;
if(headp1)
head=head->next;
else
{
while(p2)
{
if(p2->nextp1)
{
p2->next=p1->next;
free(p1);
break;
}
p2=p2->next;
}
}
printf(“删除成功！\n”);
write(head);
show();
printf("\n");
system(“pause”);
}
void showBook(){
system(“cls”);
show();
system(“pause”);
}
void changeBook() //修改书籍
{
struct book *p,head,q=NULL;
system(“cls”);
int n=1,amount;
char isbn[20]={’\0’},name[20]={’\0’},author[20]={’\0’},print[20]={’\0’},name1[20]={’\0’},zone[15]={’\0’};
float price;
p=head=read();
show();
printf(“输入要修改的图书书名\n”);
scanf("%s",name);
while§
{
if(strcmp(p->book1.name,name)==0)
{
q=p;
break;
}
else
p=p->next;
}
while(n!=0)
{
printf(“请选择您要修改的信息,退出修改请按0\n”);
printf("---------------------------------------------------------------\n");
printf(“1.编号 2.修改书名 3.修改作者信息 4.修改数量 \n");
printf("---------------------------------------------------------------\n”);
scanf("%d",&n);
switch(n)
{
case 1: printf(“编号”); scanf("%s",isbn); strcpy(q->book1.isbn,isbn);break;
case 2: printf(“输入新书名：”); scanf("%s",name1); strcpy(q->book1.name,name1);break;
case 3: printf(“输入新作者信息：”); scanf("%s",author); strcpy(q->book1.author,author);break;
case 4: printf(“输入新数量:”); scanf("%d",&amount); q->book1.amount=amount;break;
}
}
write(head);
printf(“修改成功!\n”);
show();
system(“pause”);
}
void findBook()
{
struct book *head=NULL,*p;
char name[20]={’\0’};
int flag=0;
char n=1;
system(“cls”);
head=read();
p=head;
printf(“输入书籍名查找书籍):”);
scanf("%s",name);
while§
{
if(strcmp(p->book1.name,name)==0||strcmp(p->book1.isbn,name)0)
{
printf(“编号 书名 作者 数量 \n”);
printf("%-20s%-15s%-15s%-14d\n",p->book1.isbn,p->book1.name,p->book1.author,p->book1.amount);
printf("\n");
flag=1;
break;
}
else
p=p->next;
}
if(flag0)
printf(“没有此书籍,请确认书名是否正确!\n\n”);
system(“pause”);
}
void addInventory()
{
struct book *p,*head,*q=NULL;
system(“cls”);
int n=1,amount;
char isbn[20]={’\0’},name[20]={’\0’},author[20]={’\0’},print[20]={’\0’},name1[20]={’\0’},zone[15]={’\0’};
float price;
p=head=read();
show();
printf(“输入要增加库存的书籍”);
scanf("%s",name);
while§
{
if(strcmp(p->book1.name,name)==0)
{
q=p;
break;
}
else
p=p->next;
}
printf("输入增加库存数:");
scanf("%d",&amount);
q->book1.amount= p->book1.amount + amount;
write(head);
printf("修改成功!\n");
show();
system("pause");
}
void lendBook()//借书
{
struct book *p=NULL,*p1=NULL,*head=NULL,p2;
char n=1;
system(“cls”);
printf(“借阅书名 借阅人 借阅时间\n”);
p=head=read();//从文件读取数据
p2=(struct book)malloc(sizeof(struct book));
scanf("%s%s%s",p2->book1.userBook,p2->book1.userName,p2->book1.userTime);
if(head==NULL)
head=p2;
else
{
p1=head;
while(p1->next!=NULL)
p1=p1->next;
p1->next=p2;
p2->next=NULL;
}
lendWrite(head,1);
n=getchar();
printf("书籍借阅成功\n");
// lendDisplay();
system("pause");
}
void lendWrite(struct book *head,int n) //借阅写入文件
{
FILE *fp;
struct book *p=NULL;
fp=fopen("lendb.txt","a+");
if(!fp)
{
printf("文件打开失败\n");
exit(0);
}
p=head;
// printf("%s%s%s",p->book1.userBook,p->book1.userName,p->book1.userTime);
if (n != 0){
for (int i = 0; i < 4; i++)
{
p = p->next;
}
}
while(p)
{
// printf("%s--_%s---%s\n",p->book1.userBook,p->book1.userName,p->book1.userTime);
// printf("------------------\n");
fprintf(fp,"%-20s%-15s%-15s",p->book1.userBook,p->book1.userName,p->book1.userTime);
p=p->next;
if(p == NULL){
break;
}
}
fclose(fp);
}
void lendDisplay() //书籍借阅情况
{
struct book1 book1;
FILE *fp;
//system(“cls”);
printf(“借阅信息\n”);
printf("\n");
fp=fopen(“lendb.txt”,“r”);
if(!fp)
{
printf(“文件打开失败\n”);
exit(0);
}
else
{
printf(“借阅书名 借阅人 借阅时间\n”);
while(fscanf(fp,"%s%s%s",book1.userBook,book1.userName,book1.userTime)!=EOF)
{
printf("%-20s%-15s%-15s%\n",book1.userBook,book1.userName,book1.userTime);
}
}
fclose(fp);
printf("\n");
}
void returnBook()//还书
{
struct book *p1=NULL,*p2=NULL,*head=NULL;
char name[20]={’\0’};
char ch;
p1=p2=head=read();
// system(“cls”);
printf("\n");
printf("还书人 还书书名:\n");
scanf("%s",name);
// while(strcmp(p1->book1.userBook,name)!=0&&p1!=NULL)//第一本书和要删除的书名不同则一直寻找
// p1=p1->next;
if(head==p1)
head=head->next;
else
{
while(p2)
{
if(p2->next==p1)
{
p2->next=p1->next;
free(p1);
break;
}
p2=p2->next;
}
}
printf("还书成功\n");
// lendWrite(head,0);
// lendDisplay();
printf("\n");
system("pause");
}
|