C/C++知识项目教程：图书管理系统！手把手教你写出大学C语言图书管理系统...
老师的源代码😘
/*VS软件的内扩增问题*/#define _CRT_SECURE_NO_WARNINGS
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <iostream>
#include <list>
/*用户信息
struct student
{
char name[20];
char tel[20];
int curNum;
struct bookInfo userBook[3];
};
list<student> myList;*/
//书籍信息
struct bookInfo//图书信息结构体
{
char name[20];
float price;
int num;
};
struct Node//定义结构体变量
{
struct bookInfo data;
struct Node* next;
};
struct Node* listBook = NULL;//全局变量声明
struct Node* createHead()//创建表头(有表头链表)
{
struct Node* headNode = (struct Node*)malloc(sizeof(struct Node));//动态内存申请
headNode->next = NULL;//初始化
return headNode;
}
struct Node* createNode(struct bookInfo data)//创建节点，用户数据变为结构体变量
{
struct Node* newNode = (struct Node*)malloc(sizeof(struct Node));
newNode->data = data;//必须先连接后断开
newNode->next = NULL;
return newNode;
}
void insertNodeByHead(struct Node* headNode, struct bookInfo data)//头插法插入数据
{
struct Node* newNode = createNode(data);
newNode->next = headNode->next;
headNode->next = newNode;
}
/*void insertNodeByTail(struct Node* headNode, int data)//尾插法
{
struct Node* pMove = headNode;
while (pMove->next != NULL)
{
pMove = pMove->next;
}
struct Node* newNode = createNode(data);
pMove->next = newNode;
}*/
void deleteNodeByName(struct Node* headNode,char *bookName)//删除函数
{
struct Node* posLeftNode = headNode;
struct Node* posNode = headNode->next;
while (posNode != NULL && strcmp(posNode->data.name,bookName))
{
posLeftNode = posNode;
posNode = posLeftNode->next;
}
if (posNode == NULL)
return;
else
{
printf("删除成功。\n");
posLeftNode->next = posNode->next;
free(posNode);
posNode = NULL;
}
}
void printlistBook(struct Node* headNode)//打印数据
{
struct Node* pMove = headNode->next;
printf("书名\t价格\t数量\n");
while (pMove)
{
//剥洋葱
printf("%s\t%.1f\t%d\n", pMove->data.name,pMove->data.price,pMove->data.num);
pMove = pMove->next;
}
}
void bubbleSortlistBook(struct Node* headNode)//排序
{
for (struct Node* p = headNode->next; p != NULL; p->next)
{
for (struct Node* q = headNode->next; q->next != NULL; q = q->next)
{
if (q->data.price > q->next->data.price)
{
struct bookInfo tempData = q->data;
q->data = q->next->data;
q->next->data = tempData;
}
}
}
printlistBook(headNode);
}
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;
}
//文件操作
void saveInfoToFile(const char* fileName, struct Node* headNode)//文件储存
{
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);
}
void readInfoFromFile(const char* fileName, struct Node* headNode)//文件浏览
{
FILE* fp = fopen(fileName, "r");
if (fp == NULL)//创建文件
{
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);
}
void makeMenu()//显示初始界面
{
printf("----------------------\n");
printf("图书管理系统\n");
printf("0.退出\n");
printf("1.登记\n");
printf("2.浏览\n");
printf("3.借阅\n");
printf("4.归还\n");
printf("5.排序\n");
printf("6.删除\n");
printf("7.查找\n");
printf("----------------------\n");
printf("请输入（0-7）\n");
}
void keyDown()//Switch函数选择界面
{
int userkey = 0;
struct bookInfo tempBook;//产生一个临时的变量储存书籍信息
struct Node* result = NULL;
scanf("%d", &userkey);
switch (userkey)
{
case 0:
printf("【 退出成功 】\n");
exit(0);
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");
printf("请输入借阅的书名：");
scanf("%s", tempBook.name);
result = searchByName(listBook, tempBook.name);
if (result == NULL)
{
printf("没有找到相关书籍，无法借阅。\n");
}
else
{
if (result->data.num >= 1)
{
result->data.num--;
printf("借阅成功。\n");
}
else
{
printf("当前书本暂无库存，借阅失败！\n");
}
}
break;
case 4:
printf("【 归还 】\n");
printf("请输入归还的书名：");
scanf("%s", tempBook.name);
result = searchByName(listBook, tempBook.name);
if (result == NULL)
{
printf("该书不属于图书馆！");
}
else
{
result->data.num++;
printf("归还成功。\n");
}
break;
case 5:
printf("【 排序 】\n");
bubbleSortlistBook(listBook);
break;
case 6:
printf("【 删除 】\n");
printf("请输入需要删除的书名：");
scanf("%s", tempBook.name);
deleteNodeByName(listBook, tempBook.name);
saveInfoToFile("bookinfo.txt", listBook);
break;
case 7:
printf("【 查找 】\n");
printf("请输入要查找的书籍：");
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("【 请输入有效数字。 】\n");
break;
}
}
int main()//主函数
{
listBook = createHead();
readInfoFromFile("bookinfo.txt",listBook);
while (1)
{
makeMenu();
keyDown();
system("pause");
system("cls");
}
system("pause");
return 0;
}
