#define _CRT_SECURE_NO_WARNINGS
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <iostream>
#include <list>
using namespace std;
struct bookInfo
{
char name[20]; //书名
float price; //书籍的价格
int num; //书的数量
};
struct Node
{
struct bookInfo data;
struct Node* next;
};
struct Node* listBook = NULL;
//创建表头： 表头就是一个结构体变量
//另一个部分：用户信息
struct student
{
char name[20];
char tel[20];
int curNum;
struct bookInfo userBook[3];
};
list<student> myList;
struct Node* createHead()
{
//动态内存申请
struct Node* headNode = (struct Node*)malloc(sizeof(struct Node));
//变量的基本规则>? 使用前必须初始化
headNode->next = NULL;
return headNode;
}
//创建节点: 为插入做准备
//把用户的数据变为结构体变量
struct Node* createNode(struct bookInfo data)
{
struct Node* newNode = (struct Node*)malloc(sizeof(struct Node));
newNode->data = data;
newNode->next = NULL;
return newNode;
}
//插入：只需要一种插入方式
void insertNodeByHead(struct Node* headNode, struct bookInfo data)
{
struct Node* newNode = createNode(data);
//必须先连接后断开
newNode->next = headNode->next;
headNode->next = newNode;
}
//指定删除
//posLeftNode->next=posNode->next;
//free(posNode);
void deleteNodeByName(struct Node* headNode, char *bookName)
{
struct Node* posLeftNode = headNode;
struct Node* posNode = headNode->next;
//书籍名字是字符串，字符串比较函数
while (posNode != NULL && strcmp(posNode->data.name,bookName))
{
posLeftNode = posNode;
posNode = posLeftNode->next;
}
//讨论查找的结果
if (posNode == NULL)
return;
else
{
printf("删除成功!\n");
posLeftNode->next = posNode->next;
free(posNode);
posNode = NULL;
}
}
struct Node* searchByName(struct Node* headNode, char* bookName)
{
struct Node* posNode = headNode->next;
while (posNode != NULL && strcmp(posNode->data.name, bookName))
{
posNode = posNode->next;
}
return posNode;
}
void printlistBook(struct Node* headNode)
{
struct Node* pMove = headNode->next;
printf("书名\t价格\t数量\n");
while (pMove!=NULL)
{
//剥洋葱
printf("%s\t%.1f\t%d\n", pMove->data.name, pMove->data.price, pMove->data.num);
pMove = pMove->next;
}
}
//1.写界面--->菜单--->模块
void makeMenu()
{
printf("---------------------------------------\n");
printf(" xxoo图书管理系统\n");
printf("\t0.退出系统\n");
printf("\t1.登记书籍\n");
printf("\t2.浏览书籍\n");
printf("\t3.借阅书籍\n");
printf("\t4.归还书籍\n");
printf("\t5.书籍排序\n");
printf("\t6.删除书籍\n");
printf("\t7.查找书籍\n");
printf("---------------------------------------\n");
printf("请输入(0~7):");
}
//直接文件操作?
//写操作
void saveInfoToFile(const char* fileName, struct Node* headNode)
{
FILE* fp = fopen(fileName, "w");
struct Node* pMove = headNode->next;
while (pMove != NULL)
{
fprintf(fp, "%s\t%.1f\t%d\n", pMove->data.name, pMove->data.price, pMove->data.num);
pMove = pMove->next;
}
fclose(fp);
}
//文件读操作
void readInfoFromFile(const char* fileName, struct Node* headNode)
{
FILE* fp = fopen(fileName, "r"); //第一次打开文件肯定不存在
if (fp == NULL)
{ //不存在就创建出来这个文件
fp = fopen(fileName, "w+");
}
struct bookInfo tempData;
while (fscanf(fp, "%s\t%f\t%d\n", tempData.name, &tempData.price, &tempData.num) != EOF)
{
insertNodeByHead(listBook, tempData);
}
fclose(fp);
}
//算法是一种思想
void bubbleSortlistBook(struct Node* headNode)
{
for (struct Node* p = headNode->next; p != NULL; p = p->next)
{
for (struct Node* q = headNode->next; q->next != NULL; q = q->next)
{
if (q->data.price > q->next->data.price)
{
//交换值
struct bookInfo tempData = q->data;
q->data = q->next->data;
q->next->data = tempData;
}
}
}
printlistBook(headNode);
}
//2.做交互
void keyDown()
{
int userKey = 0;
struct bookInfo tempBook; //产生一个临时的变量存储书籍信息
struct Node* result = NULL;
scanf("%d", &userKey);
switch (userKey)
{
case 0:
printf("【 退出 】\n");
printf("退出成功\n");
system("pause");
exit(0); //关闭掉整个程序
break;
case 1:
printf("【 登记 】\n");
printf("输入书籍的信息(name,price,num):");
scanf("%s%f%d", tempBook.name, &tempBook.price, &tempBook.num);
insertNodeByHead(listBook, tempBook);
saveInfoToFile("bookinfo.txt", listBook);
break;
case 2:
printf("【 浏览 】\n");
printlistBook(listBook);
break;
case 3:
printf("【 借阅 】\n"); //书籍存在可以借阅 ，书籍的总数量-1 不存在借阅失败
printf("请输入借阅的书名：");
scanf("%s", tempBook.name);
result = searchByName(listBook, tempBook.name);
if (result==NULL)
{
printf("没有相关书籍无法借阅!\n");
}
else
{
if (result->data.num > 0)
{
result->data.num--;
printf("借阅成功!\n");
}
else
{
printf("当前书籍无库存在，借阅失败!\n");
}
}
break;
case 4:
printf("【 归还 】\n"); //当前书籍的数量+1
printf("请输入归还的书名：");
scanf("%s", tempBook.name);
result = searchByName(listBook, tempBook.name);
if (result == NULL)
{
printf("该书来源非法!\n");
}
else
{
result->data.num++;
printf("书籍归还成功!\n");
}
break;
case 5:
printf("【 排序 】\n");
bubbleSortlistBook(listBook);
break;
case 6:
printf("【 删除 】\n");
printf("请输入删除书名:");
scanf("%s", tempBook.name);
deleteNodeByName(listBook, tempBook.name);
saveInfoToFile("bookinfo.txt", listBook);
break;
case 7:
printf("【 查找 】\n");
printf("请输入要查询的书名:");
scanf("%s", tempBook.name);
result = searchByName(listBook, tempBook.name);
if (result == NULL)
{
printf("未找到相关信息!\n");
}
else
{
printf("书名\t价格\t数量\n");
printf("%s\t%.1f\t%d\n", result->data.name, result->data.price, result->data.num);
}
break;
default:
printf("【 error 】\n");
break;
}
}
//easyx inputBox
//自己封装一个Edit
int main()
{
listBook= createHead();
readInfoFromFile("bookinfo.txt", listBook);
while (1)
{
makeMenu();
keyDown();
system("pause");
system("cls");
}
system("pause");
return 0;
}
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