#include "book.h" #include #include #include Book* book_create(const char* title, const char* author, int year) { // initialize book Book* book = calloc(1, sizeof(Book)); if (!book) { return NULL; } // initialize title and author book->title = calloc(strlen(title), sizeof(char)); book->author = calloc(strlen(author), sizeof(char)); if (!book->title || !book->author) { return NULL; } strcpy(book->title, title); strcpy(book->author, author); book->year = year; return book; } void book_print(const void* data) { const Book* book = (Book*)data; printf("Book[title=%s,author=%s,year=%d]\n", book->title, book->author, book->year); } int title_eq(const void* title, const void* data) { Book* book = (Book*)data; return !strcmp(book->title, (char*) title); }