library.c

纯循环实现图书馆管理系统。具备基础功能。普通界面。入门级程序

#include<stdio.h>
#include<string.h>
#include<conio.h>
#include<stdlib.h>
#include<ctype.h>
#define STACK_INIT_SIZE 10000
#define OK 1
#define TRUE 1
#define FALSE  0
#define ERROR 0


returnbook();
lendbook();
addbook();
bookcount();
changebook();
delbook();

addcard();
delcard();
changecard();
cardcount();


struct card               /*借书卡数据库*/
{
int cardnum;              /*卡号*/
char studentname[10];     /*借书学生姓名*/
char studentclass[15];        /*学生所在班级*/
}card[100];



struct student           /*定义学生类型，用于存放借出的书籍*/
{
int cardnum;               /*借书卡号*/
char lendbook[10];         /*所借图书*/
}student[100];



struct book              /*建立书籍数据库*/
{
int booknum;             /*ISBN书号*/
char bookname[10];        /*书名*/
char bookcreat[10];       /*作者*/
int turefalse;           /*管藏剩余数*/
int total;               /*书籍总数*/
char publi[10];           /*出版社*/
}book[100];






clr()        /*定义一个清屏函数*/
{
                window(1,2,80,24);
                textbackground(BLUE);
                textcolor(WHITE);
                clrscr();
}






returnbook()               /*还书的函数*/
{
FILE *fp,*fp2,*fp3;           /*定义两个文件指针，fp2为临时文件数据指针，打开ExFile数据库。写入均是先写入到ExFile，然后再从ExFile写回到原来的数据库文件中。防止意外操作造成错误数据*/
int i,n,p,q,r;
int cardnum;
char lendbook[10];
int lendnum;
char choise=0;
ind3:                    /*验证卡号工作*/
n=0;
printf("\nPlease input your card number:\n");
scanf("%d",&cardnum);


fp=fopen("card.txt","r");     /*与数据库对照*/


for(i=0;fread(&card[i],sizeof(struct card),1,fp)!=0;i++)
    {
    if(card[i].cardnum==cardnum)   /*卡号存在*/
        {
        fclose(fp);
        printf("\nCARD number:%d  Student Name :%s  Class :%s \n\n",card[i].cardnum,card[i].studentname,card[i].studentclass);


        fp=fopen("record.txt","r");      /*打开借书操作数据库，调出借书的数据*/
        for(i=0;fread(&student[i],sizeof(struct student),1,fp)!=0;i++)
            {
            if(student[i].cardnum==cardnum)
                {
                printf("The book you borrowed: %s \n",student[i].lendbook);
                n++;
                }
            else continue;
            }
        fclose(fp);
        printf("\nYou has borrowed %d books.\n",n);
        printf("\nPress any key to continue.\n");
        getch();
        goto ind1;
        }
    else ;
    }


        {
        fclose(fp);
        printf("\nYou have input a WRONG number,please CHECK it and input again.\n");
                        printf("\nDo you want to input your number again? (Y/N)\n");
                        scanf("%s",&choise);
                        if(choise=='y'||choise=='Y')
                            {
                            clr();
                            choise=0;
                            goto ind3;
                            }
                        else
                            {
                            return;
                            }
        }

clr();




ind1:
clr();
fp=fopen("card.txt","r");       /*从存储文件中读取数据进行操作*/

for(i=0;fread(&card[i],sizeof(struct card),1,fp)!=0;i++)   /*判断卡号是否存在,从fp指向的card.txt中读取1个数据,放入到card[i]中*/
    {
    if(card[i].cardnum==cardnum)      /*卡号存在的情况,读取的和输入的等价*/
        {
        ind2:
        n=i;
        fclose(fp);
        printf("\nPlease input the ISBN NUMBER of the book that you return:\n");
        scanf("%d",&lendnum);



        fp3=fopen("book.txt","r");      /*打开BOOK数据库，调出数据，寻找ISBN对应的书名*/
        for(q=0;fread(&book[q],sizeof(struct book),1,fp3)!=0;q++)
            {
            if(book[q].booknum==lendnum)    /*找到对应资料*/
                {
                printf("\nISBN number : %d  book name: %s  author: %s   public  : %s\nNow we have [ %d ] These Books.",book[q].booknum,book[q].bookname,book[q].bookcreat,book[q].publi,book[q].turefalse);
                for(r=0;r<=10;r++)                               /*把资料里面的书名放到借书函数书名中去*/
                    {
                    lendbook[r]=book[q].bookname[r];
                    }
                fclose(fp3);




                fp=fopen("record.txt","r");               /*   从存储文件中读取数据进行操作*/
                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)      /*借阅了该书的情况,比较两个字符串,误差为0,即相同*/
                        {
                        fclose(fp);
                        fp=fopen("record.txt","r");
                        fp2=fopen("ExFile.txt","w");                  /*先将改变写入临时数据库中*/
                            for(i=0;fread(&student[i],sizeof(struct student),1,fp)!=0;i++)
                                {
                                if(strcmp(student[i].lendbook,lendbook)==0)
                                    {
                                    continue;
                                    }
                                fwrite(&student[i],sizeof(struct student),1,fp2);
                                }
                            fclose(fp);
                            fclose(fp2);
                            fp=fopen("record.txt","w");
                            fp2=fopen("ExFile.txt","r");              /*再写回到record数据库中*/
                            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("ExFile.txt","w");                    /*清临时文件的记录*/
                            fclose(fp2);


                            fp=fopen("book.txt","r");
                            fp2=fopen("ExFile.txt","w");               /*写入到临时数据库中*/
                            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++;                      /*还书后，藏书数目+1*/
                                    fwrite(&book[i],sizeof(struct book),1,fp2);        /*重新写回数据库*/
                                    continue;
                                    }
                                fwrite(&book[i],sizeof(struct book),1,fp2);
                                }
                            fclose(fp);
                            fclose(fp2);

                            fp=fopen("book.txt","w");
                            fp2=fopen("ExFile.txt","r");    /*从临时文件中写回操作*/
                            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("ExFile.txt","w");              /*清临时文件*/
                            fclose(fp2);

                            printf("\nThe record of the book you borrowed has been sccessed cleared,\n"
                            "press any key to continue.\n");
                            printf("\nDo you want to return another one? (Y/N)\n");
                            scanf("%s",&choise);
                            if(choise=='y'||choise=='Y')
                                {
                                clr();
                                choise=0;
                                goto ind1;
                                }
                            else
                                {
                                return;
                                }
                        }
                    else continue;

                    }
                }
            else continue;
            }        /*检测ISBN的FOR 循环的结束*/


            {
            printf("\nWARNING!The data of the ISBN NUMBER you input CANNOT been found in record.\n");   /*出错提示*/
            printf("\nDo you want to return another one? (Y/N)\n");
                        scanf("%s",&choise);
                        if(choise=='y'||choise=='Y')
                            {
                            fclose(fp);
                            choise=0;
                            clr();
                            goto ind1;
                            }
                        else
                            {
                            fclose(fp);
                            return;
                            }

            getch();
            return;
            }
        }
    }
printf("\nWRONG Card number!Please check it! \n");   /*出错提示*/
                        printf("\nDo you want to input your number again? (Y/N)\n");
                        scanf("%s",&choise);
                        if(choise=='y'||choise=='Y')
                            {
                            fclose(fp);
                            clr();
                            choise=0;
                            goto ind3;
                            }
                        else
                            {
                            fclose(fp);
                            return;
                            }

printf("\nPress any Key to exit this mode.");
getch();
return;

}















lendbook()       /*借书的函数,与还书函数类似*/
{
FILE *fp,*fp2,*fp3;
int i,n,p,q;
static int carnum;
static int lendnum;
char choise;
char choi='0';




ind3:
n=0;
choise=0;
printf("\nInput your Card Number:\n");

scanf("%d",&carnum);


fp=fopen("card.txt","r");     /*与数据库对照*/


for(i=0;fread(&card[i],sizeof(struct card),1,fp)!=0;i++)
    {
    if(card[i].cardnum==carnum)   /*卡号存在*/
        {
        fclose(fp);              /*关闭card*/
        printf("\nCARD number:%d  Student Name :%s  Class :%s \n\n",card[i].cardnum,card[i].studentname,card[i].studentclass);


        fp=fopen("record.txt","r");      /*打开借书操作数据库，调出借书的数据*/
        for(i=0;fread(&student[i],sizeof(struct student),1,fp)!=0;i++)
            {
            if(student[i].cardnum==carnum)
                {
                printf("The book you borrowed: %s \n",student[i].lendbook);
                n++;
                }
            else continue;
            }
        fclose(fp);                           /*关闭record*/
        printf("\nYou has borrowed %d books.\n",n);
        printf("\nPress any key to continue.\n");
        getch();
        clr();
        goto ind1;

        }
    else ;
    }


        {
        printf("\nYou have input a WRONG number,please CHECK it and input again.\n");
                        printf("\nDo you want to input your number again? (Y/N)\n");
                        scanf("%s",&choise);
                        if(choise=='y'||choise=='Y')
                            {
                            clr();
                            choise=0;
                            goto ind3;
                            }
                        else
                            {
                            return;
                            }
        }

clr();


ind1:
clr();
choise=0;
n=0;
if(0)           /*原本想在这里加入一个搜索索引页，但是实际编译后，调用索引之后会出现问题，故先将其屏蔽*/
    {printf("\nDo you want to use the BOOK SEARCH ENGINE? (Y/N)\n");
                        scanf("%s",&choise);
                        if(choise=='y'||choise=='Y')
                            {
                            clr();
                            chabook();
                            choise=0;
                            }
                        else
                            {
                            clr();
                            }
    }



ind2:
choise=0;
n=0;
fp=fopen("card.txt","r");     /*与数据库对照*/
for(i=0;fread(&card[i],sizeof(struct card),1,fp)!=0;i++)
    {
    if(card[i].cardnum==carnum)   /*卡号存在*/
        {
        fclose(fp);                /*close card*/
        n=i;
        printf("\nInput the ISBN NUMBER of the book you want to borrow:\n");
        scanf("%d",&lendnum);



        fp3=fopen("book.txt","r");      /*打开BOOK数据库，调出数据，寻找ISBN对应的书名*/
        for(p=0;fread(&book[p],sizeof(struct book),1,fp3)!=0;p++)
            {
            if(book[p].booknum==lendnum)    /*找到对应资料*/
                {
                printf("\nISBN number : %d  book name: %s  author: %s   public  : %s\nNow we have [ %d ] These Books.\n\n",book[p].booknum,book[p].bookname,book[p].bookcreat,book[p].publi,book[p].turefalse);
                for(q=0;q<=10;q++)                               /*把资料里面的书名放到借书函数书名中去*/
                    {
                    student[n].lendbook[q]=book[p].bookname[q];
                    }
                fclose(fp3);










                fp=fopen("book.txt","r");  /*打开书籍数据库*/

                for(i=0;fread(&book[i],sizeof(struct book),1,fp)!=0;i++)
                    {
                    if(book[i].booknum==lendnum)
                        {
                        if(book[i].turefalse==0)   /*判断是否能借阅,0为没有剩余.*/
                            {
                            printf("\nSORRY!All of these books had been borrowed OUT!\nPress any key to continue.\n");

                            printf("\nDo you want to borrow another one? (Y/N)\n");
                            scanf("%s",&choise);
                            if(choise=='y'||choise=='Y')
                                {
                                fclose(fp);      /*close book*/
                                clr();
                                goto ind1;
                                }
                            else
                                {
                                fclose(fp);
                                return;
                                }
                            }