C圖書管理系統(tǒng)方案

1、. . . . #include <iostream>#include <fstream>#include <string>using namespace std;struct BookInfochar loginname10;char bookname20;char author20;char number5;char date10;double price;struct Nodestruct BookInfo book; struct Node *next;void option();void select();Node *head;Node *pt10

2、;FILE *fp;/創(chuàng)建鏈表/*Node *CrtNode(int n) Node *head; /聲明頭指針headNode *p,*s; head=new Node; /創(chuàng)建頭結(jié)點(diǎn)由head指向(空的頭結(jié)點(diǎn))s=head; cout<<"請輸圖書信息:"<<endl;for(int i=0;i<n;i+)p=new Node; /創(chuàng)建一個結(jié)點(diǎn)cout<<"登錄名："cin.getline(p->book.loginname,10);strcat(p->book.loginname,"n

3、");cout<<"書名："cin.getline(p->book.bookname,20);strcat(p->book.bookname,"n");cout<<"作者名："cin.getline(p->book.author,20);strcat(p->book.author,"n");cout<<"分類號："cin.getline(p->book.number,5);strcat(p->book.number

4、,"n");cout<<"出版日期："cin>>p->book.date;strcat(p->book.date,"n");cout<<"價格："cin>>p->book.price;s->next=p; /把創(chuàng)建的結(jié)點(diǎn)由s的next指向s=p; /指針s的指向向后移一個結(jié)點(diǎn)cin.clear();cin.sync();p->next=NULL; /最后一個結(jié)點(diǎn)的next指向空return head; /返回頭指針*/*strcat(p-

5、>book.loginname,"n");strcat(p->book.bookname,"n");strcat(p->book.author,"n");strcat(p->book.number,"n");strcat(p->book.date,"n");*/1.插入void Insert(Node *head)Node *p,*s;s = head;cout<<"請輸入圖書信息:"<<endl;p=new Node;

6、cin.clear();cout<<"登錄名："cin.getline(p->book.loginname,10);strcat(p->book.loginname,"n");cin.clear();cin.sync();cout<<"書名："cin.getline(p->book.bookname,20);strcat(p->book.bookname,"n");cin.clear();cin.sync();cout<<"作者名："c

7、in.getline(p->book.author,20);strcat(p->book.author,"n");cin.clear();cin.sync();cout<<"分類號："cin.getline(p->book.number,5);strcat(p->book.number,"n");cin.clear();cin.sync();cout<<"出版日期(yyyy-mm-dd)："cin>>p->book.date;strcat(p->

8、;book.date,"n");cout<<"價格："cin>>p->book.price;while(s->next)s = s->next;s->next = p;p->next = NULL;/初始化Node *Initial()Node *head;head = new Node;head->next = NULL;return head;/2.顯示所有信息void Show(Node *head) int i = 1;Node *p;/顯示除頭結(jié)點(diǎn)以后所有結(jié)點(diǎn)(因為創(chuàng)建時頭結(jié)點(diǎn)為空）p

9、=head->next; if(p = NULL)cout<<"系統(tǒng)沒有儲存任何圖書信息，請輸入圖書信息后再進(jìn)行其他操作！"<<endl;elsecout<<"*下面是所有的圖書信息*"<<endl;while(p!=NULL)cout<<" 圖書"<<i<<": "<<p->book.bookname<<endl;cout<<"登錄名："<<p->

10、;book.loginname;cout<<"書名："<<p->book.bookname;cout<<"作者名："<<p->book.author;cout<<"分類號："<<p->book.number;cout<<"出版日期："<<p->book.date;cout<<"價格："<<p->book.price;cout<<endl

11、;p=p->next;i+;cout<<endl;cout<<"請按回車鍵返回菜單。"<<endl;cin.get();/3.查找int findauthor(const Node *head)Node *ps;char author20;int count = 0;ps = head->next;cout<<"請輸入作者名："cin.getline(author,20);strcat(author,"n");while(ps)if(strcmp(ps->book.au

12、thor,author) = 0)pt0 = ps;count+;ps = ps->next;if(count = 0)cout<<"查找的圖書不存在！"<<endl;return count;int findbookname(const Node *head)Node *ps;char bookname20;int count = 0;int i = 0;ps = head->next;cout<<"請輸入書名："cin.getline(bookname,20);strcat(bookname,"

13、;n");while(ps)if(strcmp(ps->book.bookname,bookname) = 0)pti = ps;count+;i+;if(ps->next =NULL)break;ps = ps->next;if(count = 0)cout<<"查找的圖書不存在！"<<endl;return count;void Showarray(int n)cout<<"*下面是所查找的圖書信息*"<<endl;for(int i=0;i<n;i+)cout<

14、<" 圖書"<<i+1<<": "<<pti->book.bookname;cout<<"登錄名："<<pti->book.loginname;cout<<"書名："<<pt0->book.bookname;cout<<"作者名："<<pti->book.author;cout<<"分類號："<<pti->bo

15、ok.number;cout<<"出版日期："<<pti->book.date;cout<<"價格："<<pti->book.price;cout<<endl;cin.get();int Find(Node *head)int n,num;system("cls");if(head->next = NULL)cout<<"系統(tǒng)沒有儲存任何圖書信息，請輸入圖書信息后再進(jìn)行其他操作！"<<endl;cin.get();

16、elsecout<<"請選擇查找方式（1.按作者名查找 2.按書名查找）："cin>>n;cin.clear();cin.sync();switch(n)case 1:num = findauthor(head);if(num != 0)Showarray(num);break;case 2:num = findbookname(head);if(num !=0)Showarray(num);break;default:cout<<"輸入有誤，請重新輸入！"<<endl;cin.get();system(&

17、quot;cls");option();select();return num;/4.修改圖書信息void Modify(Node *head)Node *p,*q,*s;p = head->next;int i,n;if(p = NULL)cout<<"系統(tǒng)沒有儲存任何圖書信息，請輸入圖書信息后再進(jìn)行其他操作！"<<endl;elsecout<<"請輸入需要更正信息的圖書名："<<endl;n = findbookname(head);Showarray(n);loop:cout<&

18、lt;"請選擇對第幾本書的信息進(jìn)行修改："cin>>i;cin.clear();cin.sync();if(i > 0 & i <= n)cout<<"*修改第"<<i<<"本書的其他信息*"<<endl;cout<<"登錄名："cin.getline(pti-1->book.loginname,10);strcat(pti-1->book.loginname,"n");cin.clear()

19、;cin.sync();cout<<"作者名："cin.getline(pti-1->book.author,20);strcat(pti-1->book.author,"n");cin.clear();cin.sync();cout<<"分類號："cin.getline(pti-1->book.number,5);strcat(pti-1->book.number,"n");cin.clear();cin.sync();cout<<"出版日期(

20、yyyy-mm-dd)："cin>>pti-1->book.date;strcat(pti-1->book.date,"n");cout<<"價格："cin>>pti-1->book.price;elsecout<<"選擇的書的序號有誤！"goto loop;cin.get();/5.刪除圖書信息void Deletebook(Node *head)Node *p,*q;char bookname20;int count = 0;int i = 0;p = h

21、ead;q = p->next;if(q = NULL)cout<<"系統(tǒng)沒有任何圖書信息！"<<endl;elsecout<<"請輸入書名："cin.getline(bookname,20);strcat(bookname,"n");while(q != NULL)q = p->next;if(strcmp(q->book.bookname,bookname) = 0)p->next = q->next;delete q;count+;p = q;q = q->

22、next;if(count = 0)cout<<"沒有找到該圖書信息！"<<endl;elsecout<<"圖書信息已經(jīng)刪除!"<<endl;cin.get();/鏈表長度int Len(const Node *head)Node *ps;int count = 0;ps = head->next;while(ps)count+;ps = ps->next;return count;/6.保存文件void save(Node *head)Node *p;char st20;p = head-&g

23、t;next;if(fp=fopen("book.dat", "w")=NULL)cout<<"打開文件失敗"<<endl;return;char t255; /將 L1.listlen() 賦予字符串中的數(shù)字int lenth = Len(head);fwrite(&lenth,sizeof(int),1,fp);while(p)fwrite(p,sizeof(struct Node),1,fp);p = p->next;fclose(fp);cout<<"文件已經(jīng)保存，請

24、按ENTER鍵退出！"<<endl;cin.get();/8.刪除所有圖書信息void Free_List(Node *head) Node *p;p = head->next;while(p)delete p;p = head->next;/*void readstr(FILE *f,char *string)do /: 先讀入一行文本fgets(string, 255, f); /fgets(): 從文件 f 讀入長度為 255-1 的字符串 / 并存入到 string 中 while (string0 = '/') | (string0

25、= 'n');return;*/讀取文件Node *Load()char c255;int lenth;Node *p,*q;head = new Node;p = head;if(fp=fopen("book.dat", "r")=NULL)cout<<"打開文件失敗"<<endl;return head;elsefread(&lenth,sizeof(int),1,fp);for(int i = 0;i < lenth;i+)q = new Node;fread(q,sizeof(struct Node),1,fp);p->next = q;p = q;p->next = NULL;fclose(fp);return head;/9.菜單選項void select()int m,n;cout<<"請輸入以下數(shù)字來選擇所需要的操作（18）："cin.clear();cin.sync