数据结构课设C语言图书馆管理系统

以下是一个简单的C语言图书馆管理系统的示例，包括图书管理和会员管理的基本功能：

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

#define MAX_BOOKS 1000
#define MAX_MEMBERS 1000

// 图书结构体
typedef struct {
    char id[20]; // 书号
    char name[50]; // 书名
    char author[50]; // 第一作者
    int edition; // 版次
    char publisher[50]; // 出版社
    int year; // 出版年
    int borrowed; // 是否被借出
} Book;

// 会员结构体
typedef struct {
    char id[20]; // 会员号
    char name[50]; // 姓名
    char phone[20]; // 电话
    char email[50]; // 邮箱
    char borrowed[20]; // 借阅的书号
} Member;

Book books[MAX_BOOKS];
Member members[MAX_MEMBERS];
int bookCount = 0;
int memberCount = 0;

// 添加图书
void addBook() {
    if (bookCount >= MAX_BOOKS) {
        printf("Error: The library is full.\n");
        return;
    }
    Book book;
    printf("Please enter the book information:\n");
    printf("ID: ");
    scanf("%s", book.id);
    printf("Name: ");
    scanf("%s", book.name);
    printf("Author: ");
    scanf("%s", book.author);
    printf("Edition: ");
    scanf("%d", &book.edition);
    printf("Publisher: ");
    scanf("%s", book.publisher);
    printf("Year: ");
    scanf("%d", &book.year);
    book.borrowed = 0;
    books[bookCount++] = book;
    printf("The book has been added successfully.\n");
}

// 查询图书
void searchBook() {
    char id[20];
    printf("Please enter the book ID: ");
    scanf("%s", id);
    for (int i = 0; i < bookCount; i++) {
        if (strcmp(books[i].id, id) == 0) {
            printf("ID: %s\n", books[i].id);
            printf("Name: %s\n", books[i].name);
            printf("Author: %s\n", books[i].author);
            printf("Edition: %d\n", books[i].edition);
            printf("Publisher: %s\n", books[i].publisher);
            printf("Year: %d\n", books[i].year);
            if (books[i].borrowed) {
                printf("Status: Borrowed\n");
            } else {
                printf("Status: Available\n");
            }
            return;
        }
    }
    printf("Error: The book is not found.\n");
}

// 删除图书
void deleteBook() {
    char id[20];    printf("Please enter the book ID: ");
    scanf("%s", id);
    for (int i = 0; i < bookCount; i++) {
        if (strcmp(books[i].id, id) == 0) {
            for (int j = i; j < bookCount - 1; j++) {
                books[j] = books[j + 1];
            }
            bookCount--;
            printf("The book has been deleted successfully.\n");
            return;
        }
    }
    printf("Error: The book is not found.\n");
}

// 借阅图书
void borrowBook() {
    char id[20];
    printf("Please enter the book ID: ");
    scanf("%s", id);
    for (int i = 0; i < bookCount; i++) {
        if (strcmp(books[i].id, id) == 0) {
            if (books[i].borrowed) {
                printf("Error: The book is already borrowed.\n");
            } else {
                books[i].borrowed = 1;
                printf("The book has been borrowed successfully.\n");
            }
            return;
        }
    }
    printf("Error: The book is not found.\n");
}

// 归还图书
void returnBook() {
    char id[20];
    printf("Please enter the book ID: ");
    scanf("%s", id);
    for (int i = 0; i < bookCount; i++) {
        if (strcmp(books[i].id, id) == 0) {
            if (books[i].borrowed) {
                books[i].borrowed = 0;
                printf("The book has been returned successfully.\n");
            } else {
                printf("Error: The book is not borrowed.\n");
            }
            return;
        }
    }
    printf("Error: The book is not found.\n");
}

// 添加会员
void addMember() {
    if (memberCount >= MAX_MEMBERS) {
        printf("Error: The member list is full.\n");
        return;
    }
    Member member;
    printf("Please enter the member information:\n");
    printf("ID: ");
    scanf("%s", member.id);
    printf("Name: ");
    scanf("%s", member.name);
    printf("Phone: ");
    scanf("%s", member.phone);
    printf("Email: ");
    scanf("%s", member.email);
    member.borrowed[0] = '\0';
    members[memberCount++] = member;
    printf("The member has been added successfully.\n");
}

// 查询会员
void searchMember() {
    char id[20];
    printf("Please enter the member ID: ");
    scanf("%s", id);
    for (int i = 0; i < memberCount; i++) {
        if (strcmp(members[i].id, id) == 0) {
            printf("ID: %s\n", members[i].id);
            printf("Name: %s\n", members[i].name);
            printf("Phone: %s\n", members[i].phone);
            printf("Email: %s\n", members[i].email);
            printf("Borrowed book ID: %s\n", members[i].borrowed);
            return;
        }
    }
    printf("Error: The member is not found.\n");
}

// 删除会员
void deleteMember() {
    char id[20];
    printf("Please enter the member ID: ");
    scanf("%s", id);
    for (int i = 0; i < memberCount; i++) {
        if (strcmp(members[i].id, id) == 0) {
            for (int j = i; j < memberCount - 1; j++) {
                members[j] = members[j + 1];
            }
            memberCount--;
            printf("The member has been deleted successfully.\n");
            return;
        }
    }
    printf("Error: The member is not found.\n");
}

// 借阅信息
void borrowInfo() {
    char id[20];
    printf("Please enter the member ID: ");
    scanf("%s", id);
    for (int i = 0; i < memberCount; i++) {
        if (strcmp(members[i].id, id) == 0) {
            printf("Borrowed book ID: %s\n", members[i].borrowed);
            return;
        }
    }
    printf("Error: The member is not found.\n");
}

int main() {
    int choice;
    while (1) {
        printf("Please select the operation:\n");
        printf("1. Add book\n");
        printf("2. Search book\n");
        printf("3. Delete book\n");
        printf("4. Borrow book\n");
        printf("5. Return book\n");
        printf("6. Add member\n");
        printf("7. Search member\n");
        printf("8. Delete member\n");
        printf("9. Borrow info\n");
        printf("0. Exit\n");
        printf("Your choice: ");
        scanf("%d", &choice);
        switch (choice) {
            case 1:
                addBook();
                break;
            case 2:
                searchBook();
                break;
            case 3:
                deleteBook();
                break;
            case 4:
                borrowBook();
                break;
            case 5:
                returnBook();
                break;
            case 6:
                addMember();
                break;
            case 7:
                searchMember();
                break;
            case 8:
                deleteMember();
                break;
            case 9:
                borrowInfo();
                break;
            case 0:
                exit(0);
            default:
                printf("Error: Invalid choice.\n");
        }
    }
    return 0;
}