Design of library management information system based on C language
- 2020-06-01 10:37:29
- OfStack
The example of this paper for everyone to share the design and implementation of the library management information system, for your reference, the specific content is as follows
#include<stdio.h>
#include<string.h>
#define BookSize 100
#define BLHum 50
#define BLHnum 50
#define RRnum 50
/* Master database file */
typedef struct {
int bno;
char bname[21];
int namenext;
char author[9];
int authnext;
char press[11];
int prenext;
char sortno[4];
int storenum;
int borrownum;
}BookRecType;
typedef struct {
BookRecType BookDbase[BookSize];
int len;
}BookDbaseFile;
/* Isbn index file */
typedef struct {
int bno;
int RecNo;
}BidxRecType;
typedef struct {
BidxRecType BnoIdx[BookSize];
int len;
}BnoIdxFile;
/* Title link header index file */
typedef struct {
char bname[21];
int lhead;
int RecNum;
}BNRecType;
typedef struct {
BNRecType LHFrecl[BLHum];
int len1;
}LHFile1;
/* Author header index file */
typedef struct {
char author[9];
int lhead;
int RecNum;
}BARecType;
typedef struct {
BARecType LHFrec2[BLHnum];
int len2;
}LHFile2;
/* Publishing chain header index questions */
typedef struct {
char press[11];
int lhead;
int RecNum;
}BPRecType;
typedef struct {
BPRecType LHFrec3[BLHnum];
int len3;
}LHFile3;
/* The reader file */
typedef struct {
int rno;
char name[8];
int bn1;
int bn2;
}RRecType;
typedef struct {
RRecType ReadRec[RRnum];
int len;
}ReadFile;
/* Return books and documents */
typedef struct {
int rno;
int bno;
char date1[9];
char date2[9];
}BbookRecType;
typedef struct {
BbookRecType Bbook[BookSize];
int len;
}BbookFile;
/* additional 1 Set up relevant documents for book records */
BookDbaseFile AppeDBaseRec(BookDbaseFile df)
{
int i;
printf(" Book number Title: The author's name Press. classification The collection \n");
scanf("%d%s", df.BookDbase[i].bno, df.BookDbase[i].bname);
scanf("%s%s", df.BookDbase[i].author, df.BookDbase[i].press);
scanf("%s %d", df.BookDbase[i].sortno, &df.BookDbase[i].storenum);
df.BookDbase[i].borrownum = 0;
return df;
}
/* Modify the design of the isbn index table */
BnoIdxFile ChangeBnoIdxF(BookDbaseFile df, BnoIdxFile bif)
{
int i, j, k = 1;
i = df.len;
j = bif.len;
while (j >= 1)
{
if (df.BookDbase[i].bno>bif.BnoIdx[j].bno)
{
k = j + 1;
break;
}
j--;
}
if (bif.len>0)
for (j = bif.len; j >= k; j--)
bif.BnoIdx[j + 1] = bif.BnoIdx[j];
bif.BnoIdx[k].bno = df.BookDbase[i].bno;
bif.BnoIdx[k].RecNo = i;
bif.len++;
return bif;
}
/* Modify the title index and the design of the title header index */
LHFile1 ChangeLinkHeadF1(BookDbaseFile *df, LHFile1 lhf1)
{
int i, j, k, m;
char sm[21];
i = df->len;
strcpy(sm , df->BookDbase[i].bname);
j = 1;
k = 0;
while (j <= lhf1.len1)
{
if (strcmp(sm, lhf1.LHFrecl[j].bname) == 0)
{
k = j;
break;
}
j++;
}
if (k != 0)
{
df->BookDbase[i].namenext = lhf1.LHFrecl[k].lhead;
lhf1.LHFrecl[k].lhead = i;
lhf1.LHFrecl[k].RecNum++;
}
else
{
m = ++lhf1.len1;
df->BookDbase[i].namenext = 0;
lhf1.LHFrecl[m].lhead = i;
lhf1.LHFrecl[m].RecNum = 1;
strcpy(lhf1.LHFrecl[m].bname, sm);
}
return lhf1;
}
/* Modify the design of the author index and the author header index table */
LHFile2 ChangeLinkHeadF2(BookDbaseFile *df, LHFile2 lhf2)
{
int i, j, k, m;
char zz[9];
i = df->len;
strcpy(zz, df->BookDbase[i].author);
j = 1;
k = 0;
while (j <= lhf2.len2)
{
if (strcmp(zz, lhf2.LHFrec2[j].author) == 0)
{
k = j;
break;
}
j++;
}
if (k != 0)
{
df->BookDbase[i].authnext = lhf2.LHFrec2[k].lhead;
lhf2.LHFrec2[k].lhead = i;
lhf2.LHFrec2[k].RecNum = 1;
strcpy(lhf2.LHFrec2[m].author, zz);
}
return lhf2;
}
/* Modify the publisher's index and the design of the publisher's index table */
LHFile3 ChangeLinkHeadF3(BookDbaseFile *df, LHFile3 lhf3)
{
int i, j, k, m;
char cbs[11];
i = df->len;
strcpy(cbs, df->BookDbase[i].press);
j = 1;
k = 0;
while (j <= lhf3.len3)
{
if (strcmp(cbs, lhf3.LHFrec3[j].press) == 0)
{
k = j;
break;
}
j++;
}
if (k != 0)
{
df->BookDbase[i].prenext = lhf3.LHFrec3[k].lhead;
lhf3.LHFrec3[k].lhead = i;
lhf3.LHFrec3[k].RecNum++;
}
else
{
m = ++lhf3.len3;
df->BookDbase[i].prenext = 0;
lhf3.LHFrec3[m].lhead = i;
lhf3.LHFrec3[m].RecNum = i;
strcpy(lhf3.LHFrec3[m].press, cbs);
}
return lhf3;
}
/* with 2 Sub - search implementation isbn query algorithm */
int BinSearch(BnoIdxFile bif, int key)
{
int low, high, mid;
low = 1;
high = bif.len;
while (low <= high)
{
mid = (low + high) / 2;
if (key == bif.BnoIdx[mid].bno)
return bif.BnoIdx[mid].RecNo;
else
if (key<bif.BnoIdx[mid].bno)
high = mid - 1;
else
low = mid + 1;
}
return 0;
}
/* Design of query algorithm by title */
int BnameFind(LHFile1 lhf1, char key[])
{
int i, k = 0;
for (i = 1; i<=lhf1.len1;i++)
{
if (strcmp(key, lhf1.LHFrecl[1].bname) == 0)
{
k = lhf1.LHFrecl[i].lhead;
break;
}
}
return k;
}
/* According to the author query algorithm design */
int BauthFind(LHFile2 lhf2, char key[])
{
int i, k = 0;
for (i = 1; i <= lhf2.len2; i++)
{
if (strcmp(key, lhf2.LHFrec2[i].author) == 0)
{
k = lhf2.LHFrec2[i].lhead;
break;
}
}
return k;
}
/* Design of query algorithm according to publishing house */
int BnameFind(LHFile3 lhf3, char key[])
{
int i, k = 0;
for (i = 1; i <= lhf3.len3; i++)
{
if (strcmp(key, lhf3.LHFrec3[i].press) == 0)
{
k = lhf3.LHFrec3[i].lhead;
break;
}
}
return k;
}
/* The output 1 Design of a book master database record */
void ShowRec(BookDbaseFile df, int i)
{
printf(" Book number Title: The author's name Press. Classification, Can borrow \n");
printf("==============================================\n");
printf("%d%12s", df.BookDbase[i].bno, df.BookDbase[i].bname);
printf("%8s%12s", df.BookDbase[i].author, df.BookDbase[i].press);
printf("%6s", df.BookDbase[i].sortno);
printf("%4d\n", df.BookDbase[i].storenum - df.BookDbase[i].borrownum);
printf("==============================================\n");
}
/* Book query control program design */
void SearchBook(BookDbaseFile df, BnoIdxFile bif, LHFile1 f1, LHFile2 f2, LHFile3 f3)
{
char sm[21], zz[9],cbs[11];
int i, k, choose = 1;
int sh;
while (choose >= 1 && choose <= 5)
{
printf(" Book query subsystem \n");
printf("------------------\n");
printf("1. book No. 2. book The name \n");
printf("3. As a those 4. Press. \n");
printf("5. refund Out of the check polling ");
printf("------------------\n");
printf(" please with households choose Choose: ");
scanf("%d", &choose);
switch (choose)
{
case 1:
printf(" Input student number: ");
scanf("%d", &sh);
k = BinSearch(bif, sh);
if (k == 0) {
printf(" There are no books to check, please check if there is an error \n");
break;
}
ShowRec(df, k);
break;
case 2:
printf(" Enter title: ");
scanf("%", &sm);
k = BnameFind(f1, sm);
if (k == 0) {
printf(" There are no books to check, please check if there is an error \n");
break;
}
for (i = k; i; i = df.BookDbase[i].namenext)
ShowRec(df, i);
break;
case 3:
printf(" Enter the author name: ");
scanf("%s", &zz);
k = BauthFind(f2, zz);
if (k == 0) {
printf(" There are no books to check, please check if there is an error \n");
break;
}
for (i = k; i; i = df.BookDbase[i].authnext)
ShowRec(df, i);
break;
case 4:
printf(" Input publishing house: ");
scanf("%s", &cbs);
k = BnameFind(f3,cbs);
if (k == 0) {
printf(" There are no books to check, please check if there is an error \n");
break;
}
for (i = k; i; i = df.BookDbase[i].prenext)
ShowRec(df, k);
break;
case 5:
return;
}
}
}
/* Borrowing and returning books processing algorithm */
void BorrowBook(BookDbaseFile *bf, BnoIdxFile bif, BbookFile *bbf, ReadFile *rf)
{
char jyrq[9];
int sh, dzh;
int i, j, k = 0;
printf(" Enter the reader number Book number Borrow date \n");
scanf("%d%d%s", &dzh, &sh, jyrq);
for (i = 1; i <= rf->len; i++)
{
if (dzh == rf->ReadRec[i].rno)
{
k = i;
break;
}
}
if (k == 0)
{
printf(" Illegal readers! \n");
return;
}
if (rf->ReadRec[k].bn2 >= rf->ReadRec[k].bn1)
{
printf(" Has to borrow books !\n");
return;
}
j = BinSearch(bif, sh);
if (j == 0)
{
printf(" Illegal isbn! ");
return;
}
if (bf->BookDbase[j].borrownum >= bf->BookDbase[j].storenum)
{
printf(" Books out \n");
return;
}
i = ++bbf->len;
bbf->Bbook[i].rno = dzh;
bbf->Bbook[i].bno = sh;
strcpy(bbf->Bbook[i].date1, jyrq);
rf->ReadRec[k].bn2++;
bf->BookDbase[j].borrownum++;
printf(" Successful book borrowing! \n");
}
/* Return the design of the book processing algorithm */
void BackBook(BookDbaseFile *bf,BnoIdxFile bif ,BbookFile *bbf, ReadFile *rf)
{
char hsrq[8];
int sh, dzh;
int i, j, k = 0, m = 0;
printf(" The reader, Book number Return the book date \n");
scanf("%d%d%s", &dzh, &sh, hsrq);
for (i = 1; i <= rf->len; i++)
{
if (dzh == rf->ReadRec[i].rno)
{
k = i;
break;
}
}
if (k == 0)
{
printf(" Illegal readers! \n");
return;
}
for (i = 1; i <= bbf->len; i++)
if (sh == bbf->Bbook[i].bno)
{
m = i;
break;
}
if (m == 0)
{
printf(" Illegal isbn! \n");
return;
}
j = BinSearch(bif, sh);
if (j == 0)
{
printf(" Illegal isbn! \n");
return;
}
rf->ReadRec[k].bn2--;
bf->BookDbase[j].borrownum--;
strcpy(bbf->Bbook[m].date2, hsrq);
printf(" Return the book success! \n");
}
/* Reader management subsystem */
ReadFile ReaderManage(ReadFile rf)
{
int i;
char yn = 'y';
i = ++rf.len;
while (yn == 'y' || yn == 'Y')
{
printf(" Enter the reader number Readers of Number of books available \n");
scanf("%d %s", &rf.ReadRec[i].rno, rf.ReadRec[i].name);
scanf("%d", &rf.ReadRec[i].bn1);
rf.ReadRec[i].bn2 = 0;
printf(" Continue typing? y/n:");
getchar();
scanf("%c",&yn);
}
rf.len=i-1;
return rf;
}
/* Write all kinds of documents */
void writefile(BookDbaseFile bf, BnoIdxFile bif, LHFile1 f1, LHFile2 f2, LHFile3 f3, ReadFile rf, BbookFile bbf)
{
FILE *fp;
int i;
// Library master file
fp = fopen("book", "wb");
for (i = 1; i <= bf.len; i++)
fwrite(&bf.BookDbase[i],sizeof(BookRecType), 1, fp);
fclose(fp);
// Book index file
fp = fopen("bidx", "wb");
for (i = 1; i <= bif.len; i++)
fwrite(&bif.BnoIdx[i], sizeof(BidxRecType), 1, fp);
fclose(fp);
// Title index link header file
fp = fopen("nidx", "wb");
for (i = 1; i <= f1.len1; i++)
fwrite(&f1.LHFrecl[i], sizeof(BNRecType), 1, fp);
fclose(fp);
// Author index link header file
fp = fopen("aidx", "wb");
for (i = 1; i <= f2.len2; i++)
fwrite(&f2.LHFrec2[i], sizeof(BARecType), 1, fp);
fclose(fp);
// Publishing houses index link header files
fp = fopen("pidx", "wb");
for (i = 1; i <= f3.len3; i++)
fwrite(&f3.LHFrec3[i], sizeof(BPRecType), 1, fp);
fclose(fp);
// The reader file
fp = fopen("read", "wb");
for (i = 1; i <= rf.len; i++)
fwrite(&rf.ReadRec[i], sizeof(RRecType), 1, fp);
fclose(fp);
// Return books and documents
fp = fopen("bbff", "wb");
for (i = 1; i <= bbf.len; i++)
fwrite(&bbf.Bbook[i], sizeof(BbookRecType), 1, fp);
fclose(fp);
}
/* Read all kinds of documents */
void readfile(BookDbaseFile *bf, BnoIdxFile *bif, LHFile1 *f1, LHFile2 *f2, LHFile3 *f3, ReadFile *rf, BbookFile *bbf)
{
FILE *fp;
int i;
// Read the book master file
fp = fopen("book", "rb");
i = 1;
while (!feof(fp))
{
fread(&bf->BookDbase[i], sizeof(BookRecType), 1, fp);
i++;
if (feof(fp))break;
}
bf->len = i - 2;
fclose(fp);
// Read the index file well
fp = fopen("bidx", "rb");
i = 1;
while (!feof(fp))
{
fread(&bif->BnoIdx[i], sizeof(BidxRecType), 1, fp);
i++;
}
bif->len = i - 2;
fclose(fp);
// Book name index file
fp = fopen("nidx", "rb");
i = 1;
while (!feof(fp))
{
fread(&f1->LHFrecl[i], sizeof(BNRecType), 1, fp);
i++;
}
f1->len1 = i - 2;
fclose(fp);
// Read the author index file
fp = fopen("aidx", "rb");
i = 1;
while (!feof(fp))
{
fread(&f2->LHFrec2[i], sizeof(BARecType), 1, fp);
i++;
}
f2->len2 = i - 2;
fclose(fp);
// Read the publisher's index header file
fp = fopen("pidx", "rb");
i = 1;
while (!feof(fp))
{
fread(&f3->LHFrec3[i], sizeof(BPRecType), 1, fp);
i++;
}
f3->len3 = i - 2;
fclose(fp);
// Reader file
fp = fopen("read", "rb");
i = 1;
while (!feof(fp))
{
fread(&rf->ReadRec[i], sizeof(RRecType), 1, fp);
i++;
}
rf->len = i - 2;
fclose(fp);
// Read the books and return the documents
fp = fopen("bbff", "rb");
i = 1;
while (!feof(fp))
{
fread(&bbf->Bbook[i], sizeof(BbookRecType), 1, fp);
i++;
}
bbf->len = i - 2;
fclose(fp);
}
/* Main menu */
int main(void)
{
int j, m, k = 1;
char xz = 'n';
BookDbaseFile bf;
BnoIdxFile bif;
LHFile1 f1;
LHFile2 f2;
LHFile3 f3;
ReadFile rf;
BbookFile bbf;
while (k <= 5)
{
printf(" Library management system \n");
printf("============\n");
printf(" 1. System maintenance \n");
printf(" 2. The reader management \n");
printf(" 3. Books management \n");
printf(" 4. Book circulation \n");
printf(" 5. Log out \n");
printf("============\n");
printf(" Please select a 1-5 : ");
scanf("%d", &k);
switch (k)
{
case 1:
printf(" System maintenance \n");
printf("--------\n");
printf("1. Initialize the \n");
printf("2. read disc \n");
printf("--------\n");
printf(" Please select: \n");
scanf("%d", &m);
switch (m)
{
case 1:
printf(" Initialization can only be done 1 Second, be careful! Is it initialized? y/n:");
getchar();
scanf("%c", &xz);
if ( xz == 'y' || xz == 'Y')
{
bf.len = bif.len = f1.len1 = f2.len2 = 0;
f3.len3 = rf.len = bbf.len = 0;
}
break;
case 2:
readfile(&bf, &bif, &f1, &f2, &f3, &rf, &bbf);
break;
}
break;
case 2:
ReaderManage(rf);
break;
case 3:
printf(" Library management subsystem \n");
printf("--------------\n");
printf("1. Book information input \n");
printf("2. Book information query \n");
printf("--------------\n");
printf(" please choose Choose the : ");
scanf("%d", &j);
if (j == 1)
{
char yn = 'y';
int k = 1;
while (yn = 'y' || yn == 'Y')
{
bf = AppeDBaseRec(bf);
bif = ChangeBnoIdxF(bf, bif);
f1 = ChangeLinkHeadF1(&bf, f1);
f2 = ChangeLinkHeadF2(&bf, f2);
f3 = ChangeLinkHeadF3(&bf, f3);
ShowRec(bf, k);
k++;
printf(" Continue typing? y/n:");
getchar();
scanf("%c", &yn);
}
}
else
SearchBook(bf, bif, f1, f2, f3);
break;
case 4:
printf(" Book circulation subsystem \n");
printf("--------------\n");
printf(" 1. Borrow books dealing with \n");
printf(" 2. Return the book to deal with \n");
printf("--------------\n");
printf(" please choose Choose the : \n");
scanf("%d", &j);
if (j == 1)
BorrowBook(&bf, bif, &bbf, &rf);
else if (j == 2)
BackBook(&bf, bif, &bbf, &rf);
break;
case 5:
printf(" System is writing disk, please wait a moment ......\n");
writefile(bf, bif, f1, f2, f3, rf, bbf);
printf(" Good bye! \n");
return 0;
}
}
}