c语言编写一个用链表实现的图书管理系统

在C语言中，我们可以使用链表数据结构来实现一个简单的图书管理系统。这个系统可以包含书籍的基本信息，如书名、作者、ISBN等，并支持添加新书、查找书籍、删除书籍等功能。以下是简化的链表结构和部分功能的示例：

#include <stdio.h>
#include <stdlib.h>
typedef struct Book {
    char title[50];
    char author[50];
    int isbn;
    struct Book* next;
} Book;

// 添加书籍到链表
void addBook(Book** head, char* title, char* author, int isbn) {
    Book* newNode = (Book*)malloc(sizeof(Book));
    strcpy(newNode->title, title);
    strcpy(newNode->author, author);
    newNode->isbn = isbn;
    newNode->next = *head;
    *head = newNode;
}

// 查找书籍
Book* findBook(Book* head, int isbn) {
    Book* current = head;
    while (current != NULL) {
        if (current->isbn == isbn)
            return current;
        current = current->next;
    }
    return NULL;
}

// 删除书籍
void deleteBook(Book** head, int isbn) {
    Book* current = *head;
    Book* previous = NULL;

    if (current && current->isbn == isbn) {
        *head = current->next;
        free(current);
        return;
    }

    while (current != NULL && current->isbn != isbn) {
        previous = current;
        current = current->next;
    }

    if (current == NULL)
        return;

    previous->next = current->next;
    free(current);
}

// 打印链表中的所有书籍
void printBooks(Book* head) {
    Book* temp = head;
    while (temp != NULL) {
        printf("Title: %s, Author: %s, ISBN: %d\n", temp->title, temp->author, temp->isbn);
        temp = temp->next;
    }
}

int main() {
    // 初始化链表为空
    Book* bookList = NULL;

    // 添加书籍
    addBook(&bookList, "书籍1", "作者1", 123456);
    addBook(&bookList, "书籍2", "作者2", 789012);

    // 打印链表
    printBooks(bookList);

    // 查找书籍并打印
    Book* foundBook = findBook(bookList, 123456);
    if (foundBook)
        printf("Found book: Title - %s, Author - %s\n", foundBook->title, foundBook->author);
    else
        printf("Book not found.\n");

    // 删除书籍
    deleteBook(&bookList, 123456);

    // 再次打印链表
    printBooks(bookList);

    return 0;
}

这个简单的例子展示了如何创建一个链表来存储图书信息，并提供基本的操作。实际应用中，你可能会需要添加更多的错误处理和用户交互界面。