圖書信息借閱管理系統 C語言

這個圖書管理系統功能只完善了一部分
另一部分將在最近補充上去

各部分的註釋非常清晰 希望對大家有點用處 

#define true 1
#define false 0
#include <stdio.h>
#include <stdlib.h>



typedef struct book //圖書的信息
{
    int key;//編號
    char bookname[20];//書名
    char authorname[20];//作者
    char publishinghouse[20];//出版社
    double price;//價格
    int quantity;//存餘數量
    struct book * Next;
}BookNodeList;

BookNodeList *array_information[10]={0};//保存找到的指針


//查找
BookNodeList *makelist(void);//建立圖書信息鏈表
void findwithname(BookNodeList *L);//通過圖書名字查找
int IsEmpty(BookNodeList* L);
BookNodeList *findwithkey(BookNodeList *L);//通過圖書編號查找,這裏的返回值對確認是否查找成功有幫助
void findwithauthor(BookNodeList *L);//通過圖書作者查找
void findwithpublishname(BookNodeList *L);//通過出版社查找
void AddItem(BookNodeList * L);//添加項目
void deletebook(BookNodeList *L);//刪除圖書
void modify(BookNodeList *L);//修改信息
void initialize_record(BookNodeList *L);//從文件中提取信息初始化鏈表
void save(BookNodeList *L);//將鏈表的數據存儲


int main(void)
{


    BookNodeList* X;
    //創建一個圖書信息鏈表
    BookNodeList* L;
    L=makelist();
    //L是鏈表的頭指針
    initialize_record(L);


    char c='0';
    int a;
    loop :
    printf("                   Book  Management  System \n");

    printf("\t*************************Menu**********************************\n");

    printf("\t* 1 Add       book               2 delete   book           *\n");

    printf("\t* 3 find book by key             4 modify record           *\n");

    printf("\t* 5 Add  member                  6 borrow   book           *\n");

    printf("\t* 7 return   book                8 save   book             *\n");

    printf("\t* 9 save member                  10 find book by author    *\n");

    printf("\t* 11 find book by publishname    12 quit   system          *\n");

    printf("\t***************************************************************\n");

    scanf("%d",&a);
    getchar();

     switch (a){
        case 1:AddItem(L);break;
        case 2:deletebook(L);break;
        case 3:findwithkey(L);break;
        case 4:modify(L);break;
        case 5:;break;
        case 6:;break;
        case 7:;break;
        case 8:save(L);break;
        case 9:;break;
        case 10:findwithauthor(L)
        ;break;
        case 11:findwithpublishname(L);break;
        case 12:;break;
        default:printf("error\n");
    }
    printf(" 是否要回到主界面？\n");
    printf(" 如果需要回到主界面請輸入B或者b\n" );

    scanf("%c",&c);
    getchar();
    system("cls");   /*清屏*/
    if(c=='B'||c=='b')
    {
        goto loop;
    }













    //deletebook(2,L);

    //添加數據



    //AddItem(L);



    //char bookname[20]="a";
    //char authorname[20]="xie";
    //char publishname[20]="xie";
    //findwithauthor(authorname,L);
    //findwithpublishname(publishname,L);
    //findwithname(bookname,L);




    return 0;
}

//創建圖書鏈表
BookNodeList* makelist(void)
{

    BookNodeList *P;
    P=malloc(sizeof(BookNodeList));
    P->Next=NULL;
    printf("------------------------圖書鏈表創建成功-------------------------\n\n");
    return P;


}
//判斷鏈表是否爲空
int IsEmpty(BookNodeList* L)
{
    return L->Next==NULL;
}
//通過圖書名查找圖書
void findwithname(BookNodeList *L)
{

    char name[20];
    printf("請輸入要查找的圖書的名稱\n");
    gets(name);

    BookNodeList *P;
    P=L->Next;

    while(P!=NULL&&strcmp(P->bookname,name))
        P=P->Next;

    if(P==NULL)
    {
        printf("沒有找到目標圖書");
        return ;
    }

    printf("%d %f %d %s %s %s\n\n",P->key,P->price,
           P->quantity,P->bookname,
           P->authorname,P->publishinghouse);

}
//通過圖書編號查找圖書
BookNodeList *findwithkey(BookNodeList *L)
{
    int key;
    printf("請輸入要查找的圖書的編號！\n");
    scanf("%d",&key);
    getchar();


    BookNodeList *P;
    P=L->Next;

    while(P!=NULL&&key!=P->key)
        P=P->Next;

    if(NULL==P)
    {
        printf("沒有找到圖書");
    }

    return P;
}
//通過圖書作者查找圖書
void findwithauthor(BookNodeList *L)
{
    char authorname[20];
    printf("請輸入要查找圖書的作者名稱\n");
    gets(authorname);

    int i;
    int j=0;
    BookNodeList *P;
    P=L->Next;

    while(P!=NULL)
    {
        if(!strcmp(authorname,P->authorname))
            array_information[j++]=P;
        P=P->Next;

    }

    for(i=0;i<j;i++)//J的值比數量多一
    {printf("%d %f %d %s %s %s\n\n",array_information[i]->key,array_information[i]->price,
           array_information[i]->quantity,array_information[i]->bookname,
           array_information[i]->authorname,array_information[i]->publishinghouse);
    }
}
//通過出版社名稱查找圖書
void findwithpublishname(BookNodeList *L)//將找到的信息放入指針中
{

    char publishinghouse[20];
    printf("請輸入要查找書本的出版社名稱！\n");
    gets(publishinghouse);

    int i;
    int j=0;
    BookNodeList *P;
    P=L->Next;


    while(P!=NULL)
    {
        if(!strcmp(publishinghouse,P->publishinghouse))
            array_information[j++]=P;
        P=P->Next;

    }
    for(i=0;i<j;i++)//J的值比數量多一
    {printf("%d %f %d %s %s %s\n",array_information[i]->key,array_information[i]->price,
           array_information[i]->quantity,array_information[i]->bookname,
           array_information[i]->authorname,array_information[i]->publishinghouse);
    }

}
//添加圖書項目
void AddItem(BookNodeList * L)
{


	BookNodeList * P=NULL;
	P=(BookNodeList *)malloc(sizeof(BookNodeList));
	if(P==NULL)
    {
        printf("can't malloc");
        exit(0);
    }
    P->Next=NULL;
    printf("請輸入圖書編號");
    scanf("%d",&P->key);
    getchar();


    printf("請輸入價格");
    scanf("%lf",&P->price);
    getchar();

    printf("請輸入存餘數量");
    scanf("%d",&P->quantity);
    getchar();


    printf("請輸入圖書名稱");
    gets(P->bookname);


    printf("請輸入作者名稱");
    gets(P->authorname);


    printf("請輸入出版社名稱");
    gets(P->publishinghouse);

    while(L->Next!=NULL)
    {
        L=L->Next;

    }
    L->Next=P;


    FILE *fp;
    if((fp=fopen("圖書數據.txt","a"))==NULL)//對文件是否成功打開的測試
    {
        printf("can't open a test!\n");
        printf("程序即將關閉\n");
        exit(2);
    }
    else
    {
        printf("---------------------------文件打開成功------------------------------\n");
    }


    /*此處將數據添加進文件當中*/
    fprintf(fp,"%d %f %d %s %s %s\n",P->key,P->price,P->quantity,P->bookname,P->authorname,P->publishinghouse);



    printf("-------------------------添加成功！------------------------\n");

    if(fclose(fp)==EOF)
    {
        printf("文件沒有成功關閉！");
        exit(5);
    }




}
//根據圖書編號刪除圖書
void deletebook(BookNodeList *L)
{
    int key;
    printf("請輸入要刪除書本的編號！\n");
    scanf("%d",&key);
    getchar();

    if(NULL==findwithkey(L))
    {
        return;
    }


    FILE *fp;
    if((fp=fopen("test.txt","w+"))==NULL)//對文件是否成功打開的測試
    {
        printf("can't open a test!\n");
        printf("程序即將關閉\n");
        exit(2);
    }




    BookNodeList * pr=L;
	BookNodeList * P=pr->Next;


	while(P->key!=key)
    {
        pr=P;
        P=P->Next;

    }


    pr->Next=P->Next;
    P->Next=NULL;
    free(P);
    printf("---------------------------該圖書信息刪除成功----------------------------\n");
    save(L);

    if(fclose(fp)==EOF)
    {
        printf("文件沒有成功關閉！");
        exit(5);
    }




}
//修改圖書信息
void modify(BookNodeList *L)
{

    int key;
    printf("請輸入要修改圖書的圖書編號！\n");
    scanf("%d",&key);
    getchar();

    BookNodeList *P;
    P=L->Next;

    while(P!=NULL&&P->key!=key)
        P=P->Next;

    if(NULL==P)
    {
        printf("沒有找到要修改的書籍\n");
        return;
    }


    printf("請輸入修改後的圖書名稱");
    gets(P->bookname);


    printf("請輸入修改後的作者名稱");
    gets(P->authorname);


    printf("請輸入修改後出版社名稱");
    gets(P->publishinghouse);



    printf("請輸入修改後的價格");
    scanf("%d",&P->price);
    getchar();

    printf("請輸入修改後存餘數量");
    scanf("%d",&P->quantity);
    getchar();
    printf("-----------------------------圖書信息修改成功------------------------\n");


    save(L);





}
//讀取文件信息，初始化圖書鏈表
void initialize_record(BookNodeList *L)
{
    BookNodeList bookinformation;
    //打開文件
    FILE *fp;
    if((fp=fopen("圖書數據.txt","r"))==NULL)//對文件是否成功打開的測試
    {
        printf("can't open a test!\n");
        printf("程序即將關閉\n");
        exit(2);
    }
    else
    {
        printf("---------------------------文件打開成功------------------------------\n");
    }

    while((fscanf(fp,"%d %lf %d %s %s %s\n",&bookinformation.key,&bookinformation.price,
                  &bookinformation.quantity,bookinformation.bookname,bookinformation.authorname,
                  bookinformation.publishinghouse))!=EOF)
    {
        //給
        BookNodeList* P;
        P=malloc(sizeof(BookNodeList));
        P->Next=NULL;


        strcpy(P->bookname,bookinformation.bookname);
        P->key=bookinformation.key;
        strcpy(P->authorname,bookinformation.authorname);
        strcpy(P->publishinghouse,bookinformation.publishinghouse);
        P->price=bookinformation.price;
        P->quantity=bookinformation.quantity;




        L->Next=P;
        L=P;




    }

    if(fclose(fp)==EOF)
    {
        printf("文件沒有成功關閉！\n");
        exit(5);
    }

}
//保存當前的圖書鏈表到文件當中
void save(BookNodeList *L)
{
    FILE *fp;
    if((fp=(fopen("圖書數據.txt","w")))==NULL)
    {
        printf("不能創建文檔！，程序即將結束,請輸入任意字符結束程序\n");
        getchar();
        exit(4);
    }
    else
    {
        printf("文檔創建成功，請按任意鍵開始存儲！\n");
        getchar();
    }


    while(L->Next!=NULL)
    {
        fprintf(fp,"%d %f %d %s %s %s\n",L->Next->key,L->Next->price,L->Next->quantity,L->Next->bookname,L->Next->authorname,L->Next->publishinghouse);
        L=L->Next;
    }
    printf("圖書數據存儲成功。！\n");

    //關閉文件
    if(fclose(fp)==EOF)
    {
        printf("文件沒有成功關閉！\n");
        exit(5);
    }

}