一、项目简介

功能描述：基于c语言的单链表知识，实现对图书数据的初始化、插入、删除、查找、遍历。

个人负责任务：删除图书信息

二、功能架构图

三、个人任务简述

1.完成的任务与功能：

简单描述将自己完成的有特色的地方、重难点地方。

代码全览

#include <stdio.h>#include <stdlib.h>#include <string.h>struct book_info{char book_id[20];char book_name[20];int book_num;struct book_info *next;};struct book_info *book_init();struct book_info *book_insert(struct book_info *head, struct book_info *bookd);struct book_info *book_delete(struct book_info *head, char book_id[20]);struct book_info *book_find(struct book_info *head, char book_id[20]);void book_print(struct book_info *head);int main(){int choice, book_num;char book_id[20], book_name[20];struct book_info *head, *p;int size = sizeof(struct book_info);do{printf("欢迎来到图书信息管理系统\n");printf("输入1初始化图书信息\n");printf("输入2插入图书信息\n");printf("输入3删除图书信息\n");printf("输入4查找指定图书信息\n");printf("输入5查看全部图书信息\n");printf("输入0退出\n");scanf("%d", &choice);switch (choice){case 1:head = book_init();break;case 2:printf("请输入图书id、名称、数量\n");scanf("%s %s %d", book_id, book_name, &book_num);p = (struct book_info *)malloc(size);strcpy(p->book_id, book_id);strcpy(p->book_name, book_name);p->book_num = book_num;head = book_insert(head, p);break;case 3:printf("请输入图书id\n");scanf("%s", book_id);head = book_delete(head, book_id);break;case 4:printf("请输入图书id\n");scanf("%s", book_id);book_find(head, book_id);break;case 5:book_print(head);break;case 0:printf("退出成功\n");break;default:printf("非法输入\n");break;}} while (choice != 0);return 0;}struct book_info *book_init(){struct book_info *head, *p;int book_num;char book_id[20], book_name[20];int size = sizeof(struct book_info);head = NULL;printf("请输入图书的id、名称、数量\n");scanf("%s %s %d", book_id, book_name, &book_num);p = (struct book_info *)malloc(size);strcpy(p->book_id, book_id);strcpy(p->book_name, book_name);p->book_num = book_num;head = book_insert(head, p);return head;}struct book_info *book_insert(struct book_info *head, struct book_info *bookd){struct book_info *ptr, *ptr1, *ptr2;ptr2 = head;ptr = bookd;if (head == NULL){head = ptr;head->next = NULL;}else{while ((strcmp(ptr->book_id, ptr2->book_id) == 1) && (ptr2->next != NULL)){ptr1 = ptr2;ptr2 = ptr2->next;}if (strcmp(ptr->book_id, ptr2->book_id)){if (head == ptr2)head = ptr;elseptr1->next = ptr;ptr->next = ptr2;}else{ptr2->next = ptr;ptr->next = NULL;}}return head;}struct book_info *book_delete(struct book_info *head, char book_id[20]){struct book_info *ptr1, *ptr2;while (head != NULL && strcmp(head->book_id, book_id) == 0){ptr2 = head;head = head->next;free(ptr2);}if (head == NULL)return NULL;ptr1 = head;ptr2 = head->next;while (ptr2 != NULL){if (strcmp(ptr2->book_id, book_id) == 0){ptr1->next = ptr2->next;free(ptr2);}else{ptr1 = ptr2;ptr2 = ptr1->next;}}return head;}struct book_info *book_find(struct book_info *head, char book_id[20]){struct book_info *p = head;while (p){if (strcmp(p->book_id, book_id) == 0){printf("图书的名称是: %s, 数量是: %d\n", p->book_name, p->book_num);break;}else{p = p->next;}}if (p == NULL){printf("该图书不存在\n");}}void book_print(struct book_info *head){struct book_info *ptr;if (head == NULL){printf("空\n");return;}for (ptr = head; ptr != NULL; ptr = ptr->next){printf("图书id是: %s, 名称是: %s, 数量是: %d\n", ptr->book_id ,ptr->book_name, ptr->book_num);}}

四、本人负责功能详解

删除图书数据

功能演示、

红线所化部分为删除书籍信息功能的演示

不足之处：

没有实现对书籍数量的增删，只实现了对整个书籍名目的删除