• 日期: 2027-07-01 20:56:52
  • 标签: 常规

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

typedef struct Node { char bookCode[20]; char bookName[50]; char author[50]; char publisher[50]; char bookkind[50]; char bookkinds[50]; int quantity; int borrowed; struct Node *next; } BookNode;

BookNode *head = NULL;

void loadBookData() { FILE *file = fopen("book_storage.txt", "r"); if (file == NULL) { return; }

while (!feof(file)) {
    BookNode *newNode = (BookNode *)malloc(sizeof(BookNode));
    fscanf(file, "%s", newNode->bookCode);
    fscanf(file, "%s", newNode->bookName);
    fscanf(file, "%s", newNode->author);
    fscanf(file, "%s", newNode->publisher);
    fscanf(file, "%s", newNode->bookkind);
    fscanf(file, "%s", newNode->bookkinds);
    fscanf(file, "%d", &newNode->quantity);
    fscanf(file, "%d", &newNode->borrowed);
    newNode->next = NULL;

    if (head == NULL) {
        head = newNode;
    } else {
        BookNode *current = head;
        while (current->next != NULL) {
            current = current->next;
        }
        current->next = newNode;
    }
}

fclose(file);

}

void saveBookData() { FILE *file = fopen("book_storage.txt", "w"); if (file == NULL) { printf("无法保存图书信息！\n"); return; }

BookNode *current = head;
while (current != NULL) {
    fprintf(file, "%s\n", current->bookCode);
    fprintf(file, "%s\n", current->bookName);
    fprintf(file, "%s\n", current->author);
    fprintf(file, "%s\n", current->publisher);
    fprintf(file, "%s\n", current->bookkind);
    fprintf(file, "%s\n", current->bookkinds);
    fprintf(file, "%d\n", current->quantity);
    fprintf(file, "%d\n", current->borrowed);

    current = current->next;
}

fclose(file);

}

void addBook() { BookNode *newNode = (BookNode *)malloc(sizeof(BookNode)); printf("请输入图书编号："); scanf("%s", newNode->bookCode); printf("请输入书名："); scanf("%s", newNode->bookName); printf("请输入作者："); scanf("%s", newNode->author); printf("请输入出版社："); scanf("%s", newNode->publisher); printf("请输入图书种类："); scanf("%s", newNode->bookkind); printf("请输入图书种类编号："); scanf("%s", newNode->bookkinds); printf("请输入价格："); scanf("%d", &newNode->quantity); newNode->borrowed = 0; newNode->next = NULL;

if (head == NULL) {
    head = newNode;
} else {
    BookNode *current = head;
    while (current->next != NULL) {
        current = current->next;
    }
    current->next = newNode;
}

printf("添加成功！\n");

}

void deleteBook() { char bookCode[20]; printf("请输入要删除的图书编号："); scanf("%s", bookCode);

if (head == NULL) {
    printf("没有找到相关图书！\n");
    return;
}

if (strcmp(head->bookCode, bookCode) == 0) {
    BookNode *temp = head;
    head = head->next;
    free(temp);
    printf("删除成功！\n");
    return;
}

BookNode *current = head;
while (current->next != NULL) {
    if (strcmp(current->next->bookCode, bookCode) == 0) {
        BookNode *temp = current->next;
        current->next = temp->next;
        free(temp);
        printf("删除成功！\n");
        return;
    }
    current = current->next;
}

printf("没有找到相关图书！\n");

}

void modifyBook() { char bookCode[20]; printf("请输入要修改的图书编号："); scanf("%s", bookCode);

if (head == NULL) {
    printf("没有找到相关图书！\n");
    return;
}

BookNode *current = head;
while (current != NULL) {
    if (strcmp(current->bookCode, bookCode) == 0) {
        printf("请输入新的书名：");
        scanf("%s", current->bookName);
        printf("请输入新的作者：");
        scanf("%s", current->author);
        printf("请输入新的出版社：");
        scanf("%s", current->publisher);
        printf("请输入新的图书种类：");
        scanf("%s", current->bookkind);
        printf("请输入新的图书种类编号：");
        scanf("%s", current->bookkinds);
        printf("请输入新的价格：");
        scanf("%d", &current->quantity);
        printf("修改成功！\n");
        return;
    }
    current = current->next;
}

printf("没有找到相关图书！\n");

}

void searchBook() { char bookName[50]; printf("请输入要查找的书名："); scanf("%s", bookName);

if (head == NULL) {
    printf("没有找到相关图书！\n");
    return;
}

BookNode *current = head;
int found = 0;
while (current != NULL) {
    if (strcmp(current->bookName, bookName) == 0) {
        printf("图书编号：%s\n", current->bookCode);
        printf("书名：%s\n", current->bookName);
        printf("作者：%s\n", current->author);
        printf("出版社：%s\n", current->publisher);
        printf("图书种类：%s\n", current->bookkind);
        printf("图书种类编号：%s\n", current->bookkinds);
        printf("价格：%d\n", current->quantity);
        printf("借阅状态：%s\n", current->borrowed ? "已借出" : "未借出");
        found = 1;
    }
    current = current->next;
}

if (!found) {
    printf("没有找到相关图书！\n");
}

}

void borrowBook() { char bookCode[20]; printf("请输入要借阅的图书编号："); scanf("%s", bookCode);

if (head == NULL) {
    printf("没有找到相关图书！\n");
    return;
}

BookNode *current = head;
while (current != NULL) {
    if (strcmp(current->bookCode, bookCode) == 0) {
        if (current->borrowed) {
            printf("该图书已借出！\n");
        } else {
            current->borrowed = 1;
            printf("借阅成功！\n");
        }
        return;
    }
    current = current->next;
}

printf("没有找到相关图书！\n");

}

void returnBook() { char bookCode[20]; printf("请输入要归还的图书编号："); scanf("%s", bookCode);

if (head == NULL) {
    printf("没有找到相关图书！\n");
    return;
}

BookNode *current = head;
while (current != NULL) {
    if (strcmp(current->bookCode, bookCode) == 0) {
        if (current->borrowed) {
            current->borrowed = 0;
            printf("归还成功！\n");
        } else {
            printf("该图书未借出！\n");
        }
        return;
    }
    current = current->next;
}

printf("没有找到相关图书！\n");

}

void displayBook() { if (head == NULL) { printf("图书列表为空！\n"); return; }

BookNode *current = head;
while (current != NULL) {
    printf("图书编号：%s\n", current->bookCode);
    printf("书名：%s\n", current->bookName);
    printf("作者：%s\n", current->author);
    printf("出版社：%s\n", current->publisher);
    printf("图书种类：%s\n", current->bookkind);
    printf("图书种类编号：%s\n", current->bookkinds);
    printf("价格：%d\n", current->quantity);
    printf("借阅状态：%s\n", current->borrowed ? "已借出" : "未借出");
    printf("\n");

    current = current->next;
}

}

void freeBookList() { BookNode *current = head; while (current != NULL) { BookNode *temp = current; current = current->next; free(temp); } head = NULL; }

int main() { loadBookData();

while (1) {
    printf("*****欢迎使用图书管理系统*****\n");
    printf("1. 添加图书信息\n");
    printf("2. 删除图书信息\n");
    printf("3. 修改图书信息\n");
    printf("4. 查找图书信息\n");
    printf("5. 借阅图书\n");
    printf("6. 归还图书\n");
    printf("7. 显示图书信息\n");
    printf("0. 退出程序\n");
    printf("请输入您的选择：");

    int choice;
    scanf("%d", &choice);

    switch (choice) {
        case 1:
            addBook();
            break;
        case 2:
            deleteBook();
            break;
        case 3:
            modifyBook();
            break;
        case 4:
            searchBook();
            break;
        case 5:
            borrowBook();
            break;
        case 6:
            returnBook();
            break;
        case 7:
            displayBook();
            break;
        case 0:
            saveBookData();
            freeBookList();
            printf("感谢使用，再见！\n");
            exit(0);
        default:
            printf("输入有误，请重新输入！\n");
            break;
    }
}

return 0;
图书管理系统：C语言实现图书借阅功能

原文地址: https://www.cveoy.top/t/topic/fvTk 著作权归作者所有。请勿转载和采集!

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