学生图书管理系统大作业
代码如下：
#include
using namespace std;
struct book
{
char id[20];
char name[15];
char person[30][20];
int number;
int tot;
struct book *next;
};
struct student
{
char name[20];
int id;
char book[20];
bool state=true;
struct student *next;
};
int start()
{
printf("***********************************\n");
printf("请输入你的身份：\n");
printf("1.图书管理员\n2.借阅者\n3.查询借阅者情况\n4.查询图书的信息\n5.退出\n");
printf("***********************************\n");
int n;
scanf("%d",&n);
return n;
}
int borrow_start(void)
{
printf("************************************\n");
printf("请输入你要进行的操作：\n");
printf("1.借书\n2.还书\n3.退出\n");
printf("************************************\n");
int choose;
scanf("%d",&choose);
return choose;
}
int operate_start(void)
{
printf("************************************\n");
printf("请输入你要进行的操作：\n");
printf("1.读者录入\n2.图书信息的录入\n3.修改图书信息\n4.修改读者的信息\n5.删除图书信息\n6.删除读者的信息\n7.浏览已经录入的图书信息\n8.浏览读者的情况\n9.退出\n");
printf("************************************\n");
int choose;
scanf("%d",&choose);
return choose;
}
struct student* operate1(struct student* head)
{
struct student *p1=new struct student;
struct student *p2=new struct student;
p1->next=head->next;
while (p1->next!=NULL)
{
p1=p1->next;
}
printf("请输入你要录入的读者信息：\n");
printf("格式：读者的名字 读者的编号（数字）\n");
scanf("%s%d",p2->name,&p2->id);
p2->book[0]='\0';
//printf("%s %s %d\n",p2->id,p2->name,p2->number);
p2->next=NULL;
if (head->next==NULL) head->next = p2;
p1->next=p2;
return head;
}
struct book* operate2(struct book* head)
{
struct book *p1=new struct book;
struct book *p2=new struct book;
p1->next=head->next;
while (p1->next!=NULL)
{
p1=p1->next;
}
printf("请输入你要录入的图书信息：\n");
printf("格式：图书的编号（字符串） 图书的名字 图书的数量\n");
scanf("%s%s%d",p2->id,p2->name,&p2->number);
p2->tot=0;
//printf("%s %s %d\n",p2->id,p2->name,p2->number);
p2->next=NULL;
if (head->next==NULL) head->next = p2;
p1->next=p2;
//free(p1);
//free(p2);
return head;
}
struct book* operate3(struct book* head)
{
struct book *p1=new struct book;
//p1=head->next;
p1 = head;
strcpy(p1->name,"\0");
printf("请输入你要修改的图书的名字：\n");
char name1[20];
scanf("%s",name1);
while(strcmp(p1->name,name1)&&p1->next!=NULL)
{
p1=p1->next;
}
if (p1->next!=NULL){
printf("请重新输入你要写入的图书信息：\n");
printf("请输入你要录入的图书信息：\n");
printf("格式：图书的编号（字符串） 图书的名字 图书的数量\n");
scanf("%s%s%d",p1->id,p1->name,&p1->number);
}
else if (p1->next==NULL&!strcmp(p1->name,name1))
{
printf("请重新输入你要写入的图书信息：\n");
printf("请输入你要录入的图书信息：\n");
printf("格式：图书的编号（字符串） 图书的名字 图书的数量\n");
scanf("%s%s%d",p1->id,p1->name,&p1->number);
}
else{
printf("未找到你要输入修改的图书信息\n");
printf("按回车键返回\n");
getchar();
getchar();
}
return head;
}
struct student* operate4(struct student* head)
{
struct student* p1=new struct student;
p1=head;
printf("请输入你要修改的借阅者的名字：\n");
char name1[20];
scanf("%s",name1);
while(strcmp(p1->name,name1)&&p1->next!=NULL)
{
p1=p1->next;
}
if (p1->next!=NULL){
printf("请重新输入你要写入的用户信息：\n");
printf("请输入你要录入的读者信息：\n");
printf("格式：读者的名字 读者的编号（数字）\n");
scanf("%s%d",p1->name,&p1->id);
}
else if (p1->next==NULL&!strcmp(p1->name,name1))
{
printf("请重新输入你要写入的用户信息：\n");
printf("请输入你要录入的读者信息：\n");
printf("格式：读者的名字 读者的编号（数字）\n");
scanf("%s%d",p1->name,&p1->id);
}
else{
printf("未找到你要输入修改的用户信息\n");
printf("按回车键继续!\n");
getchar();
getchar();
}
return head;
}
struct book* operate5(struct book* head)
{
struct book* p1=new struct book;
struct book* p2=new struct book;
p2=head;
p1=head;
printf("请输入你要删除书的名字：\n");
char name1[20];
scanf("%s",name1);
while(strcmp(p1->name,name1)&&p1->next!=NULL)
{
p2=p1;
p1=p1->next;
}
if (p1->next!=NULL){
p2->next=p1->next;
//free(p1);
return head;
}
else if (p1->next==NULL&!strcmp(p1->name,name1))
{
p2->next=NULL;
return head ;
}
else{
printf("未找到你要输入删除的图书信息\n");
getchar();
getchar();
return head;
}
}
struct student* operate6(struct student* head)
{
struct student* p1=new struct student;
struct student* p2=new struct student;
p2=head;
p1=head;
printf("请输入你要删除书的借阅者名字：\n");
char name1[20];
scanf("%s",name1);
while(strcmp(p1->name,name1)&&p1->next!=NULL)
{
p2=p1;
p1=p1->next;
}
if (p1->next!=NULL){
p2->next=p1->next;
//free(p1);
return head;
}
else if (p1->next==NULL&!strcmp(p1->name,name1))
{
p2->next=NULL;
return head ;
}
else{
printf("未找到你要输入删除的借阅者信息\n");
getchar();
getchar();
return head;
}
}
void operate7(struct book* head)
{
system("cls");
struct book* p1=new struct book;
p1->next=head->next;
//if (p1->next==NULL) printf("你永远也不会看到图书的录入信息的\n");
while (p1->next!=NULL)
{
p1=p1->next;
printf("***********************************\n");
printf("%s %s %d\n",p1->id,p1->name,p1->number);
}
printf("***********************************\n");
getchar();
printf("按任意键返回");
getchar();
}
void operate8(struct student* head)
{
system("cls");
struct student* p1=new struct student;
p1->next=head->next;
//if (p1->next==NULL) printf("你永远也不会看到图书的录入信息的\n");
while (p1->next!=NULL)
{
p1=p1->next;
printf("***********************************\n");
printf("%s %d %s\n",p1->name,p1->id,p1->book);
}
printf("***********************************\n");
getchar();
printf("按任意键返回...");
getchar();
}
void operate(struct book* head_book,struct student* head_student)
{
bool flag=true;
while(flag) {
system("cls");
int choose1=operate_start();
switch(choose1)
{
case 1:{operate1(head_student);break;}
case 2:{operate2(head_book);break;}
case 3:{operate3(head_book);break;}
case 4:{operate4(head_student);break;}
case 5:{operate5(head_book);break;}
case 6:{operate6(head_student);break;}
case 7:{operate7(head_book);break;}
case 8:{operate8(head_student);break;}
default:{flag=false;break;}
}
}
return ;
}
void borrow1(struct book* head_book,struct student* head_student)
{
char borrow_book[20];
char borrow_name[20];
printf("请输入您的名字：\n");
struct student* p1 = new struct student;
p1 = head_student;
scanf("%s",borrow_name);
//printf("%d ",p1->next);
while (strcmp(borrow_name,p1->name)&&p1->next!=NULL){//为什么不可以 while (strcmp(borrow_name,p1->name)&&p1!=NULL)，是当p1=NULL后就不能进行比较了吗？
p1=p1->next;
}
if (!strcmp(borrow_name,p1->name)){
if (p1->state == false){
printf("很抱歉你已经借过书了。人不能贪得无厌！");
printf("按任意键返回\n");
getchar();
getchar();
return;
}
printf("你已经登录成功了！\n");
printf("请输入你要借的图书的名字：\n");
printf("温馨提醒，由于本系统比较的智商捉急，所以请输入对的名字，并且每位读者只能借阅一本!O(∩_∩)O\n");
scanf("%s",borrow_book);
struct book* p2=new struct book;
p2= head_book;
//printf("%d %d %d",p2,head_book,&head_book->next);
while (strcmp(borrow_book,p2->name)&&p2->next!=NULL){
p2=p2->next;
}
if (!strcmp(borrow_book,p2->name)){
strcpy(p1->book,p2->name);
strcpy(p2->person[p2->tot],p1->name);
p2->tot++;
//printf("%d %s",p2->tot,p2->person[0]);
printf("借书成功了!\n");
p1->state=false;
printf("请按回车键退出\n");
getchar();
getchar();
}
else {
printf("没有找到你想要借的图书！\n");
printf("请按回车键推出！\n");
getchar();
getchar();
}
}
else {
printf("对不起，你的信息未被录入管理系统，无法借书\n");
printf("按任意键退出\n");
getchar();
getchar();
}
return ;
}
void borrow2(struct book* head_book,struct student* head_student)
{
char borrow_book[20];
char borrow_name[20];
printf("请输入您的名字：\n");
struct student* p1 = new struct student;
p1 = head_student;
scanf("%s",borrow_name);
//printf("%d ",p1->next);
while (strcmp(borrow_name,p1->name)&&p1->next!=NULL){//为什么不可以 while (strcmp(borrow_name,p1->name)&&p1!=NULL)，是当p1=NULL后就不能进行比较了吗？
p1=p1->next;
}
if (!strcmp(borrow_name,p1->name)){
if (p1->state == true){
printf("很抱歉你还未借书。你的忘记好大啊！");
printf("按任意键返回\n");
getchar();
getchar();
return;
}
printf("你已经登录成功了！\n");
printf("请输入你要还的图书的名字：\n");
//printf("温馨提醒，由于本系统比较的智商捉急，所以请输入对的名字，并且每位读者只能借阅一本!O(∩_∩)O\n");
scanf("%s",borrow_book);
struct book* p2=new struct book;
p2= head_book;
//printf("%d %d %d",p2,head_book,&head_book->next);
while (strcmp(borrow_book,p2->name)&&p2->next!=NULL){
p2=p2->next;
}
if (!strcmp(borrow_book,p2->name)){
for (int i=0;itot;i++)
{
if (!strcmp(p2->person[i],borrow_name))
{
for (int j=i+1;jtot;j++)
{
strcpy(p2->person[j-1],p2->person[j]);
}
p2->tot--;
}
}
//printf("%d %s",p2->tot,p2->person[0]);
printf("还书成功了!\n");
p1->state=true;
printf("请按回车键退出\n");
getchar();
getchar();
}
else {
printf("没有找到你想要还的图书！\n");
printf("请按回车键推出！\n");
getchar();
getchar();
}
}
else {
printf("对不起，你的信息未被录入管理系统，无法还书\n");
printf("按任意键退出\n");
getchar();
getchar();
}
return ;
}
void borrow(struct book* head_book,struct student* head_student)
{
bool flag=true;
while (flag){
system("cls");
int choose=borrow_start();
switch (choose)
{
case 1:{borrow1(head_book,head_student);break;}
case 2:{borrow2(head_book,head_student);break;}
//case 3:{borrow3(head_book,head_student);break;}
default :{flag=false;break;}
}
}
}
void dict_student(struct student *head_student)
{
struct student* p1 = new struct student;
p1=head_student;
while (p1->next!=NULL)
{
p1=p1->next;
printf("************************\n");
printf("ID:%d\nName:%s\nBorrowed Book:%s\n",p1->id,p1->name,p1->book);
printf("************************\n");
}
printf("数据已经全部列出来了，请查看！\n按任意键结束\n");
getchar();
getchar();
}
void dict_book(struct book *head_book)
{
struct book* p1= new struct book;
p1 = head_book;
while (p1->next!=NULL)
{
p1=p1->next;
printf("************************\n");
printf("ID:%d\nName:%s\n总的图书数量:%d\n被借阅过的数量:%d\n剩余数量：%d\n已经借阅的名单：\n",p1->id,p1->name,p1->number,p1->tot,p1->number-p1->tot);
for (int i=0;itot;i++)
printf("%s\n",p1->person[i]);
printf("************************\n");
}
printf("数据已经全部列出来了，请查看！\n按任意键结束\n");
getchar();
getchar();
}
int main()
{
int choose;
//choose=start();
//system("cls");
bool flag=true;
struct student *head_student=new struct student;
struct book *head_book=new struct book;
head_student->next=NULL;
head_book->next=NULL; //这个初始化要写在外面，修改的时候我已经对世界充满了怀疑。。。
while (flag)
{
system("cls");
choose=start();
switch(choose)
{
case 1:{operate(head_book,head_student);break;}
case 2:{borrow(head_book,head_student);break;}
case 3:{dict_student(head_student);break;}
case 4:{dict_book(head_book);break;}
default :{flag=false;break;}
}
}
return 0;
}