book.cpp

#if 1
#define _CRT_SECURE_NO_WARNINGS
#include <stdio.h>
#include "book.h"
#include <cassert>
#include <corecrt_malloc.h>
#include <graphics.h>
#include <time.h>
//图书管理
void GetTime(char* arr) {
	time_t t;
	time(&t);
	struct tm* ptm = localtime(&t);
	sprintf(arr,"%d-%d-%d %d:%d:%d",ptm->tm_year + 1900, ptm->tm_mon + 1,ptm->tm_mday,
		ptm->tm_hour, ptm->tm_min, ptm->tm_sec);

}
void InitLibrary(Library* lib) {
	assert(lib!=NULL);
	lib->books = (Book*)malloc(INITCAPACITY*sizeof(Book));
	assert(lib->books!=NULL);
	lib->capacity = INITCAPACITY;
	lib->size = 0;
}

bool Grow(Library* lib) {//扩容操作
	assert(lib != NULL);
	int len = lib->capacity * EXPENDSIZE;
	Book* tmp=(Book*)realloc(lib->books,sizeof(Book)*len);
	if (NULL == tmp) {
		return false;
	}
	lib->books = tmp;
	lib->capacity = len;
	return true;
}
//上架图书
bool InsertTail(Library* lib) { //arr[size++] = val;
	if (lib->size == lib->capacity && !Grow(lib)) {
		MessageBox(NULL, "上架图书失败！！", "上架图书结果", MB_OKCANCEL);
		return false;
	}
	InputBox(lib->books[lib->size].bookname,50,"图书名","上架图书");
	InputBox(lib->books[lib->size].author, 50, "作者名", "上架图书");
	char buff[10] = { 0 };
	bool flag;
	do {//若编号重复，请重新录入编号
		flag = false;
		InputBox(buff, 10, "编号", "上架图书");
		int id = atoi(buff);
		lib->books[lib->size].book_id = id;
	for (int i = 0; i < lib->size; i++)
	{
		if(lib->books[i].book_id==id){
			MessageBox(NULL,"编号重复，请重新录入","上架图书",MB_OKCANCEL);
			flag = true;
			break;
		}
	}
	} while (flag);

	InputBox(buff,10,"价格","上架图书");
	lib->books[lib->size].price = atof(buff);
	char time[50] = { 0 };
	GetTime(time);
	strcpy(lib->books[lib->size].time,time);
	lib->size++;
	MessageBox(NULL,"上架图书成功！！","上架图书结果",MB_OKCANCEL);
	return true;
}
//*********下架图书***********
bool Delete(Library* lib) {
	char buff[20] = { 0 };
	InputBox(buff, 20, "下架书籍\n name or id", "下架图书");
	
	if (strncmp(buff, "name", 4) == 0) {
		return DeleteByName(lib);
	}
	if (strncmp(buff, "id", 2) == 0) {
		return DeleteById(lib);
	}
	MessageBox(NULL,"该属性不存在\n","下架失败",MB_OKCANCEL);
	return false;

}

//考虑书名是否重复
bool DeleteByName(Library* lib) {
	char buff[20] = { 0 };
	InputBox(buff, 20, "请输入下架图书书名", "下架图书");
	for (int i = 0; i < lib->size; i++) {
		if (!strcmp(lib->books[i].bookname, buff)) {
			//找到待删除图书
			for (int j = i + 1; j < lib->size; j++) {
				lib->books[j - 1] = lib->books[j];
			}
			MessageBox(NULL, "下架图书成功！！", "下架图书结果", MB_OK);
			lib->size--;
			return true;
		}
		MessageBox(NULL, "下架图书失败！！", "下架图书结果", MB_OK);
		return false;
	}
}

bool DeleteById(Library* lib) {
	char buff[20] = { 0 };
	InputBox(buff, 20, "请输入下架图书编号", "下架图书");
	int id = atoi(buff);
	for (int i = 0; i < lib->size; i++) {
		if (lib->books[i].book_id == id) {
			//找到待删除图书
			for (int j = i + 1; j < lib->size; j++) {
				lib->books[j - 1] = lib->books[j];
			}
			lib->size--;//*******重点
			MessageBox(NULL, "下架图书成功！！", "下架图书结果", MB_OK);
			return true;
		}
	}
	MessageBox(NULL, "下架图书失败！！", "下架图书结果", MB_OK);
	return false;
}
//****************************

//**************查找图书 -- 书名  编号  价格区间  上架日期 (2023年)  作者
int Search(Library* lib) {
	char buff[20] = { 0 };
	bool flag;
	do{
		InputBox(buff, 20, "查找书籍\n 按照属性:\n书名\n作者\n编号\n年份\n价格区间\n", "查找图书");
		flag = false;
	if (strcmp(buff, "书名") == 0) {
		return SearchByName(lib);
	}
	if (strcmp(buff, "作者") == 0) {
		return SearchByAuthor(lib);
	}
	if (strcmp(buff, "编号") == 0) {
		return SearchById(lib);
	}
	if (strcmp(buff, "年份") == 0) {
		return SearchByDate(lib);
	}
	if (strcmp(buff, "价格区间") == 0) {
		return SearchByPriceRange(lib);
	}
	else {
		MessageBox(NULL, "该属性不存在\n请重新输入", "查找图书", MB_OKCANCEL);
		flag = true;
	}
	} while (flag);

	return -1;

}
int SearchByName(Library* lib) {
	char buff[20] = { 0 };
	InputBox(buff, 20, "请输入待查找图书书名", "查找图书");
	for (int i = 0; i < lib->size; i++) {
		if (!strcmp(lib->books[i].bookname,buff)) {
			char res[128] = { 0 };//要打印查找到的书的信息
			sprintf(res, "编号:%d 书名:%s 作者:%s 价格:%lf 上架时间:%s"
				, lib->books[i].book_id, lib->books[i].bookname, lib->books[i].author
				, lib->books[i].price, lib->books[i].time);
			strcat(res, "\n查找成功!\n");
			MessageBox(NULL, res, "查找图书", MB_OKCANCEL);
			return i;
		}
	}
	MessageBox(NULL, "查找失败", "查找图书", MB_OKCANCEL);
	return -1;
}
int SearchById(Library* lib) {
	char buff[20] = { 0 };
	InputBox(buff, 20, "请输入待查找图书编号", "查找图书");
	int id = atoi(buff);
	for (int i = 0; i < lib->size; i++) {
		if (lib->books[i].book_id == id) {
			char res[128] = { 0 };//要打印查找到的书的信息
			sprintf(res,"编号:%d 书名:%s 作者:%s 价格:%lf 上架时间:%s"
			,lib->books[i].book_id, lib->books[i].bookname, lib->books[i].author
				,lib->books[i].price, lib->books[i].time);
			strcat(res, "\n查找成功!\n");
			MessageBox(NULL, res, "查找图书", MB_OKCANCEL);
			return i;
		}
	}
	MessageBox(NULL, "查找失败", "查找图书", MB_OKCANCEL);
	return -1;
}
bool SearchByPriceRange(Library* lib) {
	char buff[20] = { 0 };
	InputBox(buff, 20, "请输入价格下限", "查找图书");
	double lowprice = atof(buff);
	InputBox(buff, 20, "请输入价格上限", "查找图书");
	double highprice = atof(buff);
	int index = -1;
	char  res[1024] = { 0 };//为什么要多创造这个数组，因为 在这个区间内有很多书，为了存多本书信息
	char tmp[128] = { 0 };
	for (int i = 0; i < lib->size; i++) {
		if (lib->books[i].price>=lowprice&&lib->books[i].price<=highprice) {
			sprintf(tmp, "编号:%d 书名:%s 作者:%s 价格:%lf 上架时间:%s\n"
				, lib->books[i].book_id, lib->books[i].bookname, lib->books[i].author
				, lib->books[i].price, lib->books[i].time);
			strcat(res,tmp);
		}	
	}
	if(res[0]=='\0'){
		//!strcmp(res,'\0')
		//strcmp( )函数传递的参数是指向字符串的指针，而不是单个的字符。
		// 可以通过将该字符包装在一个字符串中，或者使用指针来传递。
		MessageBox(NULL, "查找失败\n不存在该价格区间的书籍", "查找图书", MB_OKCANCEL);
		return index;
	}
	strcat(res, "查找成功！");
	MessageBox(NULL, res, "查找图书", MB_OKCANCEL);
	return true;
}
int SearchByDate(Library* lib) {
	char buff[20] = { 0 };
	InputBox(buff, 20, "请输入待查找年份\n格式:2023/2019", "查找图书");
	char  res[1024] = { 0 };
	char tmp[128] = { 0 };//因为 有好多本书，所以都要存
	bool flag = false;
	for (int i = 0; i < lib->size; i++) {
		char year[128] = { 0 };
		strcpy(year,lib->books[i].time);
		char* y = strtok(year,"-");//分割函数
		if (!strcmp(buff,y)) {
			sprintf(tmp, "编号:%d 书名:%s 作者:%s 价格:%2.lf 上架时间:%s\n"
				, lib->books[i].book_id, lib->books[i].bookname, lib->books[i].author
				, lib->books[i].price, lib->books[i].time);
			strcat(res, tmp);
			flag = true;
		}
	}
		if(flag){
			strcat(res, "查找成功！");
			MessageBox(NULL, res, "查找图书", MB_OKCANCEL);
		}
		else
		{
			MessageBox(NULL, "查找失败", "查找图书", MB_OKCANCEL);
		}
	return flag;
}
int SearchByAuthor(Library* lib) {
	char buff[20] = { 0 };
	InputBox(buff, 20, "请输入待查找图书作者", "查找图书");
	char res[1024] = { 0 };
	char tmp[128] = { 0 };
	bool flag = false;
	for (int i = 0; i < lib->size; i++) {
		if (!strcmp(lib->books[i].author,buff)) {
			sprintf(tmp, "编号:%d 书名:%s 作者:%s 价格:%lf 上架时间:%s"
				, lib->books[i].book_id, lib->books[i].bookname, lib->books[i].author
				, lib->books[i].price, lib->books[i].time);
			strcat(res,tmp);
			flag = true;
		}
	}
	if (!flag) {
		MessageBox(NULL, "查找失败", "查找图书", MB_OKCANCEL);
	}
	else {
		strcat(res, "\n查找成功");
		MessageBox(NULL, res, "查找图书", MB_OKCANCEL);
	}
	return flag;
}
//*********************************************
//修改 书名 编号 id 价格区间 上架日期 
int Change(Library* lib) {
	char buff[20] = { 0 };
	bool flag;
	do {
		InputBox(buff, 20, "修改书籍\n 按照属性:\n书名\n作者\n编号\n", "修改图书");
		flag = false;
		if (strcmp(buff, "书名") == 0) {
			return ChangeByName(lib);
		}
		if (strcmp(buff, "作者") == 0) {
			return ChangeByAuthor(lib);
		}
		if (strcmp(buff, "编号") == 0) {
			return ChangeById(lib);
		}
		else {
			MessageBox(NULL, "该属性不存在\n请重新输入", "修改图书", MB_OKCANCEL);
			flag = true;
		}
	} while (flag);

	return -1;

}

int ChangeByName(Library* lib) {
	char Bold[20] = { 0 };
	InputBox(Bold, 20, "请输入待修改图书书名", "修改图书");
	char Bnew[20] = { 0 };
	InputBox(Bnew, 20, "请输入修改后的图书书名", "修改图书");
	int j = 0;
	for (int i = 0; i < lib->size; i++) {
		if (!strcmp(lib->books[i].bookname, Bold)) {
			strcpy(lib->books[i].bookname, Bnew);
			j = 1;
		}
	}
	if (j) {
		MessageBox(NULL, "修改成功", "修改图书", MB_OKCANCEL);
	}
	else {
		MessageBox(NULL, "修改失败", "查找图书", MB_OKCANCEL);
	}
	return j;
}
int ChangeById(Library* lib) {
	char Bold[20] = { 0 };
	InputBox(Bold, 20, "请输入待修改图书编号", "修改图书");
	char Bnew[20] = { 0 };
	InputBox(Bnew, 20, "请输入修改后的图书编号", "修改图书");
	int j = 0;
	for (int i = 0; i < lib->size; i++) {
		if (lib->books[i].book_id == atoi(Bold)) {
			lib->books[i].book_id = atoi(Bnew);
			j = 1;
		}
	}
	if (j) {
		MessageBox(NULL, "修改成功", "修改图书", MB_OKCANCEL);
	}
	else {
		MessageBox(NULL, "修改失败", "查找图书", MB_OKCANCEL);
	}
	return j;
}
int ChangeByAuthor(Library* lib) {
	char Bold[20] = { 0 };
	InputBox(Bold, 20, "请输入待修改图书作者", "修改图书");
	char Bnew[20] = { 0 };
	InputBox(Bnew, 20, "请输入修改后的图书作者", "修改图书");
	int j = 0;
	for (int i = 0; i < lib->size; i++) {
		if (!strcmp(lib->books[i].author, Bold)) {
			strcpy(lib->books[i].author, Bnew);
			j = 1;
		}
	}
	if (j) {
		MessageBox(NULL, "修改成功", "修改图书", MB_OKCANCEL);
	}
	else {
		MessageBox(NULL, "修改失败", "查找图书", MB_OKCANCEL);
	}
	return j;
}

//展示
void Show(Library* lib) {
	char result[1024] = {0};
	strcat(result,"编号\t书名\t作者\t价格\t上架时间\n");
	char buff[128] = { 0 };//存一本书
	for (int i = 0; i < lib->size;i++) {
		sprintf(buff,"%d\t%s\t%s\t%2.lf\t%s\n",lib->books[i].book_id,lib->books[i].bookname,lib->books[i].author,lib->books[i].price,lib->books[i].time);
		strcat(result,buff);//把buff连接到result内，存到result内
		memset(buff,0,128);
	}
	MessageBox(NULL,result,"书籍信息",MB_OKCANCEL);
}
#endif