#include <stdio.h>
#include <limits.h>
#include <string.h>
#include <stdlib.h>

struct book {
    char name[50];
    char author[50];
    int idno;
};

int main() {
    struct book books[50];
    int booklist[50];
    int currentNo = 0;
    int choice = 0;
    int id = 0;


    for (int x = 0; x < 50; x++) {
        booklist[x] = 0;
        strcpy(books[x].name, "nothing19991");
    }

menu:
    printf("#------ MENU ------#\n");
    printf("1. Create a new book catalog. (Memory status: %d out of 50) \n", currentNo);
    printf("2. Search for One. \n");
    printf("3. Exit.\n\n");
    printf("Enter your choice: ");

    scanf("%d", &choice);

    if (choice == 1) {
        char temp[50];

        getc(stdin);
        printf("\nEnter book name: ");
        fgets(temp, 51, stdin);
        temp[0] = toupper(temp[0]);
        strcpy(books[currentNo].name, temp);

        printf("Enter book Author: ");
        fgets(temp, 51, stdin);
        temp[0] = toupper(temp[0]);
        strcpy(books[currentNo].author, temp);


        books[currentNo].idno = currentNo;

        printf("\n\nYour book's infos are as follows:\n\n");
        printf("Book's name: %s", books[currentNo].name);
        printf("Book's Author: %s\n", books[currentNo].author);
        printf("** Book's ID: %d **\n\n", currentNo);
        currentNo++;
        choice = 0;
        printf("\nPress any key to continue......");
        getchar();
        system("clear");
        goto menu;
    } else if(choice == 2) {
        printf("\nEnter BOOK's ID Number: ");
        scanf("%d",&id);
        getc(stdin);

        if (strcmp(books[id].name, "nothing19991") !=0) {
            printf("\n\nYour book's infos are as follows:\n\n");
            printf("Book name: %s", books[id].name);
            printf("Books Author: %s", books[id].author);
            printf("\nPress any key to continue......\n\n");
            getchar();
            system("clear");
            goto menu;
        } else {
            printf("\n\n** Your entered ID doesn't represent a book in the catalog! **");
            printf("\nPress any key to continue......\n\n");
            getchar();
            system("clear");
            goto menu;
        }
    } else if (choice == 3) {
        goto exit;
    } else {
        printf("\n\n\n*** Wrong choice number! Enter a value between 1-3! ***\n\n");
        goto menu;
    }


exit:
    return 0;
}