用C语言制作图书管理系统

好的，下面是一个简单的图书管理系统的示例代码。这个示例代码提供了基本的图书信息管理功能，包括添加、删除、查询和修改图书信息。

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

#define MAX_BOOKS 100

// 图书结构体
struct Book {
    char name[50];
    char author[50];
    char publisher[50];
    char isbn[20];
    double price;
};

// 图书管理系统结构体
struct Library {
    struct Book books[MAX_BOOKS];
    int count;
};

// 添加图书
void add_book(struct Library *lib, const char *name, const char *author, const char *publisher, const char *isbn, double price) {
    if (lib->count >= MAX_BOOKS) {
        printf("The library is full!\n");
        return;
    }

    struct Book book;
    strcpy(book.name, name);
    strcpy(book.author, author);
    strcpy(book.publisher, publisher);
    strcpy(book.isbn, isbn);
    book.price = price;

    lib->books[lib->count++] = book;
    printf("Add book successfully!\n");
}

// 删除图书
void delete_book(struct Library *lib, const char *isbn) {
    for (int i = 0; i < lib->count; i++) {
        if (strcmp(lib->books[i].isbn, isbn) == 0) {
            for (int j = i + 1; j < lib->count; j++) {
                lib->books[j - 1] = lib->books[j];
            }
            lib->count--;
            printf("Delete book successfully!\n");
            return;
        }
    }
    printf("The book is not found!\n");
}

// 查询图书
void query_book(struct Library *lib, const char *isbn) {
    for (int i = 0; i < lib->count; i++) {
        if (strcmp(lib->books[i].isbn, isbn) == 0) {
            printf("Book name: %s\n", lib->books[i].name);
            printf("Author: %s\n", lib->books[i].author);
            printf("Publisher: %s\n", lib->books[i].publisher);
            printf("ISBN: %s\n", lib->books[i].isbn);
            printf("Price: %lf\n", lib->books[i].price);
            return;
        }
    }
    printf("The book is not found!\n");
}

// 修改图书
void update_book(struct Library *lib, const char *isbn, double new_price) {
    for (int i = 0; i < lib->count; i++) {
        if (strcmp(lib->books[i].isbn, isbn) == 0) {
            lib->books[i].price = new_price;
            printf("Update book successfully!\n");
            return;
        }
    }
    printf("The book is not found!\n");
}

int main() {
    struct Library lib;
    lib.count = 0;

    // 添加图书
    add_book(&lib, "C语言程序设计", "谭浩强", "清华大学出版社", "9787302339974", 48.0);

    // 查询图书
    query_book(&lib, "9787302339974");

    // 修改图书
    update_book(&lib, "9787302339974", 58.0);

    // 删除图书
    delete_book(&lib, "9787302339974");

    return 0;
}

以上是一个基本的图书管理系统的示例代码，代码中使用结构体来存储图书信息，同时提供添加、删除、查询和修改图书信息的功能。在实际应用中，需要根据具体需求进行修改和优化。