The project ‘Library Book Info System (LBIS)’ is going to develop for College has a good library enriched with a lot of books. The prime objective of the project is to fulfill the requirements of college library. This project has been developed to replace the existing manual system for keeping books records with computerized automated books record processing system. This project will automatically reduce the human efforts, time and cost and increases efficiency and accuracy of storing books records. The library staffs can get the right information in time and make further planning.
Source code of Library Book Info System is given below:
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//code to include necessary header files #include<stdio.h> #include<conio.h> #include<process.h> #include<string.h> //Code to declare function prototype void insertData(); void displayData(void); void updateData(int); void deleteData(int); void searchData(void); int checkBookNo(int); int findLastBookNo(void); //code to declare file pointer FILE *fp,*fp1; //code to design structure struct book { int bn; char title[200]; char sub[100]; float price; int nob; char author[100]; char publisher[100]; }; //code to declare structure variable struct book b; //code to declare main function main() { int choice; int bn; while(1) { //code to display menu clrscr(); printf("\n\t\t*************************************************"); printf("\n\t\t*************************************************"); printf("\n\t\t***WELCOME TO YOU IN LIBRARY BOOKS INFO SYSTEM***"); printf("\n\t\t*************************************************"); printf("\n\t\t*************************************************"); printf("\n\t\t*********************MENU************************"); printf("\n\t\t*************************************************"); printf("\n\t\t\t\t1. Insert Record "); printf("\n\t\t\t\t2. Display Record"); printf("\n\t\t\t\t3. Update Record"); printf("\n\t\t\t\t4. Delete Record"); printf("\n\t\t\t\t5. Search Record"); printf("\n\t\t\t\t6. Quit"); printf("\n\n\tEnter your choice between 1 to 6 : "); scanf("%d",&choice); switch (choice) { case 1: //code to call insertData function insertData(); break; case 2: //code to call displayData function displayData(); break; case 3: //code to call updateData function printf("\n Enter the book no. which you want to update "); scanf("%d",&bn); updateData(bn); break; case 4: //code to call deleteData function printf("\n Enter the book no. which you want to delete "); scanf("%d",&bn); deleteData(bn); break; case 5: //code to call searchdata function searchData(); break; case 6: exit(0); default: printf("\nSORRY!!! You entered an invalid choice "); printf("\n Please, enter the valid choice between 1 to 6 "); getch(); } } } //COde to declare function definition void insertData() { char next='y'; int duplicatebookno=0,lastbookno;; clrscr(); while(next=='y'||next=='Y') { aa: clrscr(); printf("\nEnter the book no "); scanf("%d",&b.bn); //code to call function to check the book no. has been repeated or not duplicatebookno=checkBookNo(b.bn); if(duplicatebookno==1) { printf("\n\nThe book no. which you typed just now, is already exists in the data file!!!!!"); printf("\n\nPlease, enter the unique book no.!!!"); lastbookno=findLastBookNo(); printf("\n\nThe last book no. is : %d",lastbookno); getch(); goto aa; } fflush(stdin); printf("\nEnter the title of the book "); gets(b.title); printf("\nEnter the subject of the book "); gets(b.sub); printf("Enter the price of the book "); scanf("%f",&b.price); printf("\nEnter the no. of book "); scanf("%d",&b.nob); fflush(stdin); printf("\nEnter the author of the book "); gets(b.author); printf("\nEnter the publisher of the book "); gets(b.publisher); fp=fopen("Book.dat","a"); if(fp==NULL) { printf("\nFile creation error has occurred!!!"); } else { fwrite(&b,sizeof(b),1,fp); fclose(fp); printf("\n\nDo you want to insert record of another book (Y/N)? "); next=getche(); } } } void displayData(void) { clrscr(); fp=fopen("Book.dat","r"); rewind(fp); if(fp==NULL) { printf("\n\nRead operation failure as the file file which you are searching does not exist!!!"); } else { printf("\n\tBook No.\tTitle\Subject\tPrice\tNo. of Books\tAuthor\tPublisher"); while(fread(&b,sizeof(b),1,fp)==1) { printf("\n\t%-8d\t%s\t%s\tRs. %.2f\t%d\t%s\t%s",b.bn,b.title,b.sub,b.price,b.nob,b.author,b.publisher); } fclose(fp); } getch(); } void updateData(int bn) { fp=fopen("Book.dat","r"); fp1=fopen("newBook.dat","w"); if(fp==NULL || fp1==NULL) { printf("\nFile Operation failed"); } else { //code to show the existing data printf("\n\nThe followings are the existing data!!!!!!"); while(fread(&b,sizeof(b),1,fp)==1) { if(b.bn==bn) { printf("\n\tBook No. : %d",b.bn); printf("\n\tTitle : %s",b.title); printf("\n\tSubject : %s",b.sub); printf("\n\tPrice : Rs. %.2f",b.price); printf("\n\tNo. of Books : %d",b.nob); printf("\n\tAuthor : %s",b.author); printf("\n\tPublisher : %s",b.publisher); } } //code to enter new data rewind(fp); printf("\n\nEnter the new correct data "); while(fread(&b,sizeof(b),1,fp)==1) { if(bn==b.bn) { printf("\n\n\nEnter the book no "); scanf("%d",&b.bn); fflush(stdin); printf("\nEnter the title of the book "); gets(b.title); printf("\nEnter the subject of the book "); gets(b.sub); printf("Enter the price of the book "); scanf("%f",&b.price); printf("\nEnter the no. of book "); scanf("%d",&b.nob); fflush(stdin); printf("\nEnter the author of the book "); gets(b.author); printf("\nEnter the publisher of the book "); gets(b.publisher); fwrite(&b,sizeof(b),1,fp1); } else { fwrite(&b,sizeof(b),1,fp1); } } fclose(fp); fclose(fp1); remove("Book.dat"); rename("newBook.dat","Book.dat"); printf("\n\nThe record has been successfully updated in the data file"); } getch(); } void deleteData(int bn) { fp=fopen("Book.dat","r"); fp1=fopen("newBook.dat","w"); if(fp==NULL || fp1==NULL) { printf("\nFile Operation failed"); } else { while(fread(&b,sizeof(b),1,fp)==1) { if(bn==b.bn) { continue; } else { fwrite(&b,sizeof(b),1,fp1); } } fclose(fp); fclose(fp1); remove("Book.dat"); rename("newBook.dat","Book.dat"); printf("\n\nThe record has been successfully deleted from the data file"); } getch(); } void searchData(void) { int bn,found=0; char bname[100],subject[100]; int ch; clrscr(); printf("\n\t\t*****************************************"); printf("\n\t\t********Search Menu**********************"); printf("\n\t\t*****************************************"); printf("\n\t\t1. Search by Book No. "); printf("\n\t\t2. Search by Book Title "); printf("\n\t\t3. Search by Book Subject "); printf("\n\t\t4. Quit Search"); printf("\n\nEnter your choice for search "); scanf("%d",&ch); switch(ch) { case 1: //search on the basis of book no. clrscr(); fp=fopen("Book.dat","r"); printf("\n\nEnter the book no. which you want to search "); scanf("%d",&bn); if(fp==NULL) { printf("\nFile search operation failed!!!!!!!!!!!!!!!!"); } else { while(fread(&b,sizeof(b),1,fp)==1) { if(b.bn==bn) { printf("\n\tBook No. : %d",b.bn); printf("\n\tTitle : %s",b.title); printf("\n\tSubject : %s",b.sub); printf("\n\tPrice : Rs. %.2f",b.price); printf("\n\tNo. of Books : %d",b.nob); printf("\n\tAuthor : %s",b.author); printf("\n\tPublisher : %s",b.publisher); found=1; } } if(found==0) { printf("\n!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!"); printf("\nThe book which you are searching is not found "); } fclose(fp); } break; case 2: //searh on the basis of book title clrscr(); fflush(stdin); printf("\n\nEnter the title of the book which you want to search "); gets(bname); fp=fopen("Book.dat","r"); if(fp==NULL) { printf("\nFile search operation failed!!!!!!!!!!!!!!!!"); } else { while(fread(&b,sizeof(b),1,fp)==1) { if(strcmpi(b.title,bname)==0) { printf("\n\tBook No. : %d",b.bn); printf("\n\tTitle : %s",b.title); printf("\n\tSubject : %s",b.sub); printf("\n\tPrice : Rs.%.2f",b.price); printf("\n\tNo. of Books : %d",b.nob); printf("\n\tAuthor : %s",b.author); printf("\n\tPublisher : %s",b.publisher); found=1; } } if(found==0) { printf("\n!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!"); printf("\nThe book which you are searching is not found "); } fclose(fp); } break; case 3: //search on the basis of subject clrscr(); fflush(stdin); printf("\n\nEnter the subject of the book which you want to search "); gets(subject); fp=fopen("Book.dat","r"); if(fp==NULL) { printf("\nFile search operation failed!!!!!!!!!!!!!!!!"); } else { while(fread(&b,sizeof(b),1,fp)==1) { if(strcmpi(b.sub,subject)==0) { printf("\n\tBook No. : %d",b.bn); printf("\n\tTitle : %s",b.title); printf("\n\tSubject : %s",b.sub); printf("\n\tPrice : Rs.%.2f",b.price); printf("\n\tNo. of Books : %d",b.nob); printf("\n\tAuthor : %s",b.author); printf("\n\tPublisher : %s",b.publisher); found=1; } } if(found==0) { printf("\n!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!"); printf("\nThe book which you are searching is not found "); } fclose(fp); } break; case 4: //code to close search window printf("\nPress any key to quit the search operation"); break; default: printf("\nYou entered invalid choice for search "); } getch(); } int checkBookNo(int bn) { int repeated=0,lastbookno; struct book b1; fp=fopen("Book.dat","r"); if(fp==NULL) { printf("\n\nRead operation failure as the file file which you are searching does not exist!!!"); } else { while(fread(&b1,sizeof(b1),1,fp)==1) { if(b1.bn==bn) { repeated=1; break; } } fclose(fp); } return(repeated); } int findLastBookNo() { int lastbookno; struct book b2; fp=fopen("Book.dat","r"); if(fp==NULL) { printf("\n\nFile open operation failure!!!"); } else { while(fread(&b2,sizeof(b2),1,fp)==1) { lastbookno=b2.bn; } fclose(fp); } return(lastbookno); } |
The output of the Program is shown below:
The menu facility  in order to select the required operations in the program:
The search menu option:
The input screen for inserting the record of new book in library is as follows:
The output of the display operations will be as follows:
The output of the search operation will be displayed as follows:
