ppsassignmentunit5.c

#include <stdio.h>
#include <string.h>
#include <time.h>

struct Book {
    int BookNumber;
    char BookTitle[100];
    char Author[100];
    char Publisher[100];
    int YearOfPublication;
    char Subject[100];
};

struct Date {
    int day, month, year;
};

struct Checkout {
    char Name[100];
    char Address[100];
    int Phone;
    int BookNumber;
    struct Date CheckoutDate;
    struct Date ReturnDate;
};

struct Book library[2700];
int availablebookssize = 0;
struct Checkout checkoutregistry[2700];
int currentcheckoutsize = 0;

void addnewbooks();

void searchbooks();

void removeoutdatedbooks();

void checkoutbooks();

void returnbooks();

int main() {
    int choice;
    do {
        printf("Ansprin Library\n");
        printf("---------------\n");
        printf("1) Add new books\n");
        printf("2) Search the library by book number, author, title, subject, keywords\n");
        printf("3) Remove outdated books (all books older than 15 years)\n");
        printf("4) Checkout books\n");
        printf("5) Return books\n");
        printf("0) Exit\n");

        printf("\nEnter choice: ");
        scanf("%d", &choice);
        getc(stdin);

        switch (choice) {
            case 1:
                addnewbooks();
                break;
            case 2:
                searchbooks();
                break;
            case 3:
                removeoutdatedbooks();
                break;
            case 4:
                checkoutbooks();
                break;
            case 5:
                returnbooks();
                break;
            case 0:
                goto exit;
            default:
                printf("Wrong choice... Exiting\n");
                break;
        }

        printf("\n\n");
    } while (choice != 0);

    exit:
    return 0;
}

void addnewbooks() {
    struct Book newbook;

    printf("Enter Book Number: ");
    scanf("%d", &newbook.BookNumber);
    getc(stdin);

    printf("Enter Book Title: ");
    gets(newbook.BookTitle);

    printf("Enter Author Name: ");
    gets(newbook.Author);

    printf("Enter Publisher Name: ");
    gets(newbook.Publisher);

    printf("Enter Year Of Publication: ");
    scanf("%d", &newbook.YearOfPublication);
    getc(stdin);

    printf("Enter Subject: ");
    gets(newbook.Subject);

    library[++availablebookssize] = newbook;

    printf("\nBook \"%s\" is added.\n", newbook.BookTitle);
}

struct Book *findbookbybooknumber();

struct Book *findbookbyauthor();

struct Book *findbookbytitle();

struct Book *findbookbysubject();

void searchbooks() {
    printf("Find book by\n");
    printf("a. book number\n");
    printf("b. author\n");
    printf("c. title\n");
    printf("d. subject\n");
    printf("\nEnter choice: ");

    char choice;
    scanf("%c", &choice);

    struct Book *book = NULL;

    switch (choice) {
        case 'a':
            book = findbookbybooknumber();
            break;
        case 'b':
            book = findbookbyauthor();
            break;
        case 'c':
            book = findbookbytitle();
            break;
        case 'd':
            book = findbookbysubject();
            break;
        default:
            printf("Wrong choice...");
            return;
    }

    if (book != NULL) {
        printf("Found book: (%d) %s\n", book->BookNumber, book->BookTitle);
    } else {
        printf("No book found\n");
    }
}

struct Book *findbookbybooknumber() {
    int booknumber;
    printf("Enter Book Number: ");
    scanf("%d", &booknumber);
    getc(stdin);

    for (int i = 0; i < availablebookssize; ++i) {
        struct Book *book = &library[i];
        if (book->BookNumber == booknumber) {
            return book;
        }
    }
    return NULL;
}

struct Book *findbookbyauthor() {
    char author[100];
    printf("Enter Author Name: ");
    gets(author);

    for (int i = 0; i < availablebookssize; ++i) {
        struct Book *book = &library[i];
        if (strcmp(book->Author, author) == 0) {
            return book;
        }
    }
    return NULL;
}

struct Book *findbookbytitle() {
    char title[100];
    printf("Enter Book Title: ");
    gets(title);

    for (int i = 0; i < availablebookssize; ++i) {
        struct Book *book = &library[i];
        if (strcmp(book->BookTitle, title) == 0) {
            return book;
        }
    }
    return NULL;
}

struct Book *findbookbysubject() {
    char subject[100];
    printf("Enter Subject: ");
    gets(subject);

    for (int i = 0; i < availablebookssize; ++i) {
        struct Book *book = &library[i];
        if (strcmp(book->Subject, subject) == 0) {
            return book;
        }
    }
    return NULL;
}

void removebook(int index, int length);

void removeoutdatedbooks() {
    time_t currenttime;
    time(&currenttime);
    struct tm *timeinfo = localtime(&currenttime);
    int currentyear = timeinfo->tm_year;

    for (int i = 0; i < availablebookssize; ++i) {
        struct Book *book = &library[i];
        if (book->YearOfPublication < currentyear - 15) {
            removebook(i, availablebookssize);
            availablebookssize--;
        }
    }
}

void removebook(int index, int length) {
    for (int i = index; i < length - 1; i++) {
        library[i] = library[i + 1];
    }
}

void checkoutbooks() {
    struct Checkout newco;

    printf("Enter Name: \n");
    gets(newco.Name);

    printf("Enter Address: \n");
    gets(newco.Address);

    printf("Enter Phone: \n");
    scanf("%d", &newco.Phone);
    getc(stdin);

    printf("Enter Book Number: \n");
    scanf("%d", &newco.BookNumber);
    getc(stdin);

    printf("Enter Checkout Date (dd/mm/yyyy): \n");
    int dd, mm, yyyy;
    scanf("%d/%d/%d", &dd, &mm, &yyyy);
    getc(stdin);

    struct Date cd;
    cd.day = dd;
    cd.month = mm;
    cd.year = yyyy;
    newco.CheckoutDate = cd;

    printf("\nBook %d is checked out by %s.\n", newco.BookNumber, newco.Name);
    currentcheckoutsize++;
}

void returnbooks() {
    int booknumber;
    printf("Enter Book Number: \n");
    scanf("%d", &booknumber);
    getc(stdin);

    for (int i = 0; i < currentcheckoutsize; ++i) {
        struct Checkout *cd = &checkoutregistry[i];
        if (cd->BookNumber == booknumber) {
            time_t currenttime;
            time(&currenttime);
            struct tm *timeinfo = localtime(&currenttime);
            struct Date rd;
            rd.day = timeinfo->tm_mday;
            rd.month = timeinfo->tm_mon;
            rd.year = timeinfo->tm_year;
            cd->ReturnDate = rd;

            printf("\nReturn date for Book %d is recorded.\n", booknumber);
            break;
        }
    }

    printf("\nNot found\n");
}