Linux下的c语言图书管理系统

在Linux系统下，可以使用C语言编写一个简单的图书管理系统。以下是一个简单的示例：

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

#define MAX_BOOKS 100

struct book {
    int id;
    char title[50];
    char author[50];
    int year;
};

struct book books[MAX_BOOKS];
int num_books = 0;

void add_book() {
    struct book new_book;

    printf("Enter book ID: ");
    scanf("%d", &new_book.id);
    printf("Enter book title: ");
    scanf("%s", new_book.title);
    printf("Enter book author: ");
    scanf("%s", new_book.author);
    printf("Enter year of publication: ");
    scanf("%d", &new_book.year);

    books[num_books] = new_book;
    num_books++;
    printf("Book added successfully!\n");
}

void view_books() {
    printf("ID\tTitle\tAuthor\tYear\n");

    for (int i = 0; i < num_books; i++) {
        struct book current_book = books[i];
        printf("%d\t%s\t%s\t%d\n", current_book.id, current_book.title,
               current_book.author, current_book.year);
    }
}

void search_books() {
    char search_term[50];
    printf("Enter search term: ");
    scanf("%s", search_term);

    printf("ID\tTitle\tAuthor\tYear\n");
    for (int i = 0; i < num_books; i++) {
        struct book current_book = books[i];
        if (strstr(current_book.title, search_term) != NULL || strstr(current_book.author, search_term) != NULL) {
            printf("%d\t%s\t%s\t%d\n", current_book.id, current_book.title,
                   current_book.author, current_book.year);
        }
    }
}

int main() {
    int choice;

    while (1) {
        printf("\n1. Add book\n");
        printf("2. View books\n");
        printf("3. Search books\n");
        printf("4. Quit\n");
        printf("Enter your choice: ");
        scanf("%d", &choice);

        switch (choice) {
        case 1:
            add_book();
            break;
        case 2:
            view_books();
            break;
        case 3:
            search_books();
            break;
        case 4:
            exit(0);
        default:
            printf("Invalid choice!\n");
        }
    }

    return 0;
}

这个程序定义了一个结构体 `book` 表示一本书，每本书有一个ID、标题、作者和出版年份。程序使用一个数组 `books` 来存储所有的书籍，并提供了三个基本操作：添加书籍、查看所有书籍和搜索书籍。可以通过在终端中运行程序来使用这些操作。