面向对象程序设计课设（简单的网上购物模拟系统）

#include<iostream>//输入输出流
#include<string>//字符串
#include<time.h>//随机数生成
#include<fstream>//文件读写流
#include<sstream>//字符串读写流
#include<vector>//字符串比较
#include<algorithm>//字符串比较
#define MAX_VALUE 10//用户最大数量
#define MAX_CODE_LEN 10//优惠券长度
#define MAX_DIS_NUM 10//优惠券数量
#define MAX_RECORD 100//记录数量
using namespace std;//使用标准命名空间

/*类声明*/
class User;//用户类
class User_sum;//用户总类
class Admin;//管理员类
class Good;//商品类
class Cart;//购物车类
class Dis_sum;//优惠券汇总类
class Record_sum;//记录总类

class User{//用户类
	private://私有成员变量
		string name;//名称
		string password;//密码
	public:
		User(){;}//无参构造，便于用户总类初始化
		User(string name,string password){//构造函数
			this->name = name;//用户名
			this->password = password;//密码
		}
		void set_user(string name,string password);//初始化函数
		string get_name();//获取名称
		string get_pass();//获取密码
		void change_name(string name);//更改名称
		void change_pass(string password);//更改密码
};

class User_sum{//用户表单类
	private://私有成员
		User user[MAX_VALUE];//所有用户数组
		int user_num;//表单中的用户数量
	public://公有成员
		User_sum(){this->user_num = 0;}//构造函数
		~User_sum(){}//析构函数
		void load();//从文件读取
		void save();//保存到文件
		int get_num();//获取用户数量
		bool add_user(string name,string pass);//增加用户
		User get_user(int i);//获取用户对象
		void change_name(int i,string name);//获取用户名称
		void change_pass(int i,string pass);//获取用户密码
		bool confirm_pass(int i,string pass);//验证密码
		void show_user();//展示所有用户
};

class Admin{//管理员类
	private:
		string password;
	public:
		Admin(string password){this->password = password;}//构造函数
		void change_password(string password);//修改密码
		string get_pass();//获取密码
};

class Good{//商品类
	private://私有成员
		string name;//商品名称
		int price;//商品价格
		int num;//商品数量
	public://公有成员
		Good(){this->name = "";this->num = 0;this->price = 0;};//无参构造函数
		Good(string name,int price,int num){//含参构造函数
			this->name = name;//名称
			this->price = price;//价格
			this->num = num;//数量
		};
		bool good(string name,int price,int num);//修改函数
		bool assign(Good good);//修改函数
		string get_name();//读取名称
		int get_price();//读取价格
		int get_num();//获取数量
		void add_num(int add);//增加数量
		void minus_num(int minus);//减少数量
};

class Cart{//购物车/商店类
	private://私有成员
		Good goods[MAX_VALUE];//商品数组
		int cart_num;//商品数量
	public://公共成员
		Cart(){this->cart_num = 0;}//构造函数
		bool add_good(string name,int price,int num);//加入新商品
		bool add_good(Good good);//加入商品
		bool del_good(int id);//删除商品
		int get_num(int id);//获取商品数量
		int get_price(int id);
		void minus_good(int id,int num);//减少商品数量
		void empty_good(int id);
		void add_num(int id,int num);//增加商品数量
		Good buy_good(int id,int num);//购买商品
		Good get_good(int id);//获取商品
		int get_sum();//获取总价
		void Display();//展示所有商品
		void Display(int id);//展示某一商品
		bool Check(int id,Record_sum &rec,double discount,double hol_dis);//结账
		void Find(string name);//寻找函数
		void load(int id);//加载函数
		void save(int id);//保存函数
		void change_name(int id,string name);//修改商品名称
		void change_price(int id,int price);//修改商品价格
		void change_num(int id,int num);//修改商品数量
};

struct Discount{//折扣券结构体
	double discount;//折扣值
	string code;//兑换码
};

class Dis_sum{//折扣券类
	private://私有成员
		Discount dis[MAX_DIS_NUM];//折扣券总数
		int dis_num;//折扣券数量
	public://公有成员
		Dis_sum(){//构造函数
			this->dis_num = 0;//折扣券数量置零
			this->creat();//折扣券类初始化
		};
		Discount draw();//抽取折扣券
		void creat();//初始化折扣券
		double use(string in);//使用折扣券
		void Display();//全部展示
		void Display(int id);//展示
		string get_code(int id);//获取兑换码
		double get_discount(int id);//获取折扣
};

struct Record{//记录结构体
	char ope;//字符代表操作
	int uid;//用户id
	int gid;//商品id
	int g_num;//商品数量
	string time_s;//时间字符串
	Record(){//构造函数，便于判空
		this->uid = -1;
		this->gid = -1;
		this->g_num = -1;//判空记录
//		this->time_s = string("");
	}
	void initialize(){//重置为空函数
		this->uid = -1;
		this->gid = -1;
		this->g_num = -1;
	}
	bool is_empty(){//判断是否为空
		return g_num == -1;//只有初始化与置空的商品数量为-1
	};
};

class Record_sum{//记录类
	private://私有成员变量
		Record rec[MAX_RECORD];//记录数组
		int re_num;//记录数量
	public:
		Record_sum(){this->re_num = 0;};//构造函数
		bool add_rec(Record re);//加入记录
		bool add_rec(char c,int uid,int gid,int gnum);//读取文件时加入记录
		bool add_rec(string time,char c,int uid,int gid,int gnum);//用户操作时加入记录
		Record get_rec(int id);//获取记录
		int get_uid(int id);//获取用户id
		string get_tim(int id);//获取记录时间
		void Display();//展示所有记录
		void Display(int id);//展示第id个记录
		void Display(int user,Cart cart,string intim,string outtime);//用户搜索记录函数
		void save();//保存到文件
		void load();//从文件读取
};
/*全局函数*/


int compare_str(string a,string b){//回溯算法计算字符串距离，操作分别为改，增，删，返回a到b操作数最少的操作
	int n = (int)a.size(), m = (int)b.size();//记录string大小
	vector<vector<int>>dp(n + 1, vector<int>(m + 1, 0));
	dp[0][0] = 0;//dp[x][y]代表将a字符串前x个字符修改成b字符串前y个字符
	for (int i = 1; i <= m; ++i) 
		dp[0][i] = i;
	for (int i = 1; i <= n; ++i) 
		dp[i][0] = i;
	for (int i = 1; i <= n; ++i){
		for (int j = 1; j <= m; ++j) 
		{
			int one = dp[i - 1][j] + 1, two = dp[i][j - 1] + 1, three = dp[i - 1][j - 1];
			if (a[i - 1] != b[j - 1]) 
				three += 1;
			dp[i][j] = min(min(one, two), three);
		}
	}
	return dp[n][m];
}

//time_t str2time(string str){//string类到time_t类型，由于实现错误更换思路
//	tm tm_;
//	int yy,mm,dd,hh,mi,ss;
//	sscanf(str.c_str(),"%d-%d-%d %d:%d:%d",&yy,&mm,&dd,&hh,&mi,&ss);
//	tm_.tm_year = yy - 1900;
//	tm_.tm_mon = mm - 1;
//	tm_.tm_mday = dd;
//	tm_.tm_hour = hh;
//	tm_.tm_min = mi;
//	tm_.tm_sec = ss;
//	tm_.tm_isdst = 0;
//	time_t t_ = mktime(&tm_);
//	return t_;
//}

string time2str(time_t t_){//time_t类型到string类函数
	char buf[64];
	time_t t,t1;
	tm* local;
	tm* gmt;
	t = time(NULL);
	local = localtime(&t);
	strftime(buf ,64 ,"%Y-%m-%d %H:%M:%S", local);//格式读取函数
	string str = buf;
	return str;
}

int compare_date(string s1,string s2){//比较string表示的时间先后
	int re = 0;
	int yy1,mm1,dd1,hh1,mi1,ss1;
	int yy2,mm2,dd2,hh2,mi2,ss2;
	sscanf(s1.c_str(),"%d-%d-%d %d:%d:%d",&yy1,&mm1,&dd1,&hh1,&mi1,&ss1);
	sscanf(s2.c_str(),"%d-%d-%d %d:%d:%d",&yy2,&mm2,&dd2,&hh2,&mi2,&ss2);
	if(yy1 == yy2){
		if(mm1 == mm2){
			if(dd1 == dd2){
				if(hh1 == hh2){
					if(mi1 == mi2){
						if(ss1 == ss2){re = 0;}
						else if(ss1>ss2){re = 1;}
						else{re = -1;} 
					}
					else if(mi1>mi2){re = 1;}
					else{re = -1;}
				}
				else if(hh1>hh2){re = 1;}
				else{re = -1;}
			}
			else if(dd1>dd2){re = 1;}
			else{re = -1;}
		}
		else if(mm1>mm2){re = 1;}
		else{re = -1;}
	}
	else if(yy1>yy2){re = 1;}
	else{re = -1;}
	return re;
}

/*类函数*/

/*User*/
void User::set_user(string name,string password){//初始化/重置函数
	this->name = name;//名称
	this->password = password;//密码
}

string User::get_name(){return this->name;}//读取名称

string User::get_pass(){return this->password;}//读取密码

void User::change_name(string name){this->name = name;}//修改名称

void User::change_pass(string pass){this->password = pass;}//修改密码



/*User_sum*/
int User_sum::get_num(){//获取用户总数
	return this->user_num;
}

void User_sum::load(){//从文件中读取到程序
	ifstream fin;
	fin.open("User.txt",ios::in);//初始化读入流
	this->user_num = 0;//每次读取都初始化用户数量
	string line,s,name,pass;//暂存变量
	size_t pos;//String流需要位置变量
	for(int i=0;i<MAX_VALUE;i++){//循环输入用户表单
		if(getline(fin,line)){//输入流读取每一行
			pos = line.find(" ");//标记空格位置
			name = line.substr(0,pos);//读取名字
			pass = line.substr(pos+1);//读取密码
			this->user[i].set_user(name,pass);//保存到表单中
			this->user_num++;//用户数量增加
		}
		else{break;}//读取完毕
	}
	fin.close();//关闭文件流
}

void User_sum::save(){//从程序中保存到文件
	ofstream fout;//写入流
	fout.open("User.txt",ios::out);//初始化写入流
	string name,pass;//暂存变量
	for(int i=0;i<this->user_num;i++){//循环写入
		name = this->user[i].get_name();//写入名称
		pass = this->user[i].get_pass();//写入密码
		fout<<name<<" "<<pass<<endl;//写入
	}
	fout.close();//关闭
}

bool User_sum::add_user(string name,string password){//增加用户数量
	if(this->user_num >= MAX_VALUE){//如果用户数量过多
		return false;//返回增加失败
	}
	else{//用户输入
		this->user[user_num].set_user(name,password);//设置用户名称与密码
		this->user_num++;//增加用户数量
		return true;
	}	
}

User User_sum::get_user(int i){//获取用户对象
	return this->user[i];
}

void User_sum::change_name(int i,string name){//修改用户名称
	this->user[i].change_name(name);
}

void User_sum::change_pass(int i,string pass){//修改用户密码
	this->user[i].change_pass(pass);
}

bool User_sum::confirm_pass(int i,string pass){//用户密码确认
	return this->user[i].get_pass() == pass;
}

void User_sum::show_user(){//循环输出
	for(int i = 0;i < this->get_num();i++){
		cout<<i+1<<"-"<<this->get_user(i).get_name()<<endl;//展示
	}
}



/*Admin*/
void Admin::change_password(string password){
	this->password = password;
}

string Admin::get_pass(){
	return this->password;
}



/*Good*/
bool Good::good(string name,int price,int num){//修改对象
	this->name = name;
	this->price = price;
	this->num = num;
	return true;
}

bool Good::assign(Good good){//修改对象
	this->name = good.get_name();
	this->price = good.get_price();
	this->num = good.get_num();
	return true;
}

string Good::get_name(){//获取名称
	return this->name;
}

int Good::get_price(){//获取价格
	return this->price;
}

int Good::get_num(){//获取数量
	return this->num;
}

void Good::add_num(int add){this->num+=add;}//数量增加

void Good::minus_num(int minus){this->num-=minus;}//数量减少



/*Cart*/
bool Cart::add_good(string name,int price,int num){//加入购物车
	int flag = 0;//标记
	for(int i = 0;i < MAX_VALUE;i++){//循环查找
		if(this->goods[i].get_name() == name){//如果购物车中已存在
			this->goods[i].add_num(num);//给已存在的商品增加数量
			flag = -1;//添加标记
			break;
		}
		else if(this->goods[i].get_num() == 0){//如果不存在，标记第一个空位商品
			flag = i;//添加标记
			break;
		}
	}
	if(flag > 0){//如果不存在，直接添加商品
		this->goods[flag].good(name,price,num);
		this->cart_num++;
	}
	else if(flag == 0){//如果未成功添加
		return false;
	}
	return true;
}

bool Cart::add_good(Good good){//加入购物车
	string name = good.get_name();
	int price = good.get_price();
	int num = good.get_num();
	int flag = 0;
	for(int i = 0;i < MAX_VALUE;i++){
		if(this->goods[i].get_name() == name){//如果购物车中已存在
			this->goods[i].add_num(num);
			flag = -1;//添加标记
			break;
		}
		else if(this->goods[i].get_num() == 0){//如果不存在，标记第一个空位商品
			flag = i;//添加标记
			break;
		}
	}
	if(flag > 0){//如果不存在，添加商品
		this->goods[flag].good(name,price,num);
		this->cart_num++;
	}
	else if(flag == 0){//如果未成功添加
		return false;
	}
	return true;
}

bool Cart::del_good(int id){//删除商品
	int flag = 0;//标记
	for(int i = 0;i < MAX_VALUE;i++){
		if(i == id){
			for(int j = id;j < MAX_VALUE - 1;j++){//将后一位前移，顶掉前一位
				this->goods[j].assign(this->goods[j+1]);
			}
//			this->cart_num--;//减少商品数量
			flag = 1;//标记已操作
			break;
		}
	}
	if(flag){
		return true;
	}
	else{
		return false;
	}
}

int Cart::get_num(int id){//获取数量
	return this->goods[id].get_num();
}

int Cart::get_price(int id){
	return this->goods[id].get_price();
}

void Cart::minus_good(int id,int num){//减少数量
	this->goods[id].minus_num(num);
}

void Cart::empty_good(int id){
	int num = this->goods[id].get_num();
	this->goods[id].minus_num(num);
}

void Cart::add_num(int id,int num){//增加数量
	this->goods[id].add_num(num);
}

Good Cart::buy_good(int id,int num){//卖出商品
	Good good = Good();
	good.good(this->goods[id].get_name(),this->goods[id].get_price(),num);
	this->goods[id].minus_num(num);
	return good;
}

Good Cart::get_good(int id){//获取商品信息
	return this->goods[id];
}

int Cart::get_sum(){//计算商品总价
	int sum = 0;
	for(int i = 0;i < MAX_VALUE;i++){
		if(this->goods[i].get_num()>0){
//			cout<<this.goods[i].get_name()<<"\t\t\t"<<this.goods[i].get_price()<<"\t"<<this.goods[i].get_num()<<endl;
			sum += this->goods[i].get_num() * this->goods[i].get_price();
		}
	}
	return sum;
}

void Cart::Display(){//展示所有商品
	cout<<"ID\tItems\t\t\tPrice\tNum"<<endl;
	for(int i = 0;i < this->cart_num;i++){
		if(this->goods[i].get_num()>0){
			Display(i);
		}
	}
//	cout<<"总价为："<<this->get_sum()<<endl;
}

void Cart::Display(int id){//展示某一商品
	cout<<id<<"\t"<<this->goods[id].get_name()<<"\t\t\t"
	<<this->goods[id].get_price()<<"\t"<<this->goods[id].get_num()<<endl;
}

bool Cart::Check(int uid,Record_sum &rec,double discount,double hol_dis){//按折扣消费
	cout<<"Total price:"<<this->get_sum()<<endl;
	if(this->get_sum() - discount < 0){
		cout<<"Price after discount: 0"<<endl;
	}
	if(discount >0){//折扣展示
		if(hol_dis > 0){
			cout<<"Price after discount:("<<this->get_sum()<<" - "<<discount<<")"<<" * "<<hol_dis<<" = "<<(this->get_sum() - discount) * hol_dis<<endl;
		}else{
			cout<<"Price after discount:"<<this->get_sum()<<" - "<<discount<<" = "<<this->get_sum() - discount<<endl;
		}
	}else{
		if(hol_dis > 0){
			cout<<"Price after discount:"<<this->get_sum()<<" * "<<hol_dis<<" = "<<this->get_sum() * hol_dis<<endl;
		}
	}
	int gnum;
	string gname;
//	/*
	for(int i = 0;i < this->cart_num;i++){
		gnum = this->get_num(i);
		if(gnum > 0){
			rec.add_rec('#',uid,i,gnum);
			this->empty_good(i);
		}
	}
	this->cart_num = 0;
//	*/
	return true;
}

void Cart::Find(string name){//寻找函数
	int find_res = -1;
	int res = INT_MAX;
	cout<<endl<<"S E A R C H   R E S U L T"<<endl<<endl;
	for(int i = 0;i < MAX_VALUE;i++){
		if(compare_str(this->goods[i].get_name(),name) < res){//寻找距离最小的字符串
			res = compare_str(this->goods[i].get_name(),name);
			find_res = i;
		}
	}
	if(find_res == -1){//如果没找到
		cout<<"NOT FOUND"<<endl;
	}
	else{
		this->Display(find_res);
	}
}

void Cart::load(int id){//从文件中加载
	string path = "Cart/";
	path.append(to_string(id));
	path.append(".txt");
	
	ifstream fin;
	fin.open(path,ios::in);//读入流
	this->cart_num = 0;//每次读取都初始化用户数量
	string line,s,name;//暂存变量
	int price,num;
	size_t pos1,pos2;//String流需要位置变量
//	istringstream is(line);//创建String流
	for(int i=0;i<MAX_VALUE;i++){//循环输入用户表单
		if(getline(fin,line)){//输入流读取每一行
			pos1 = line.find_first_of(" ");//标记前一个空格位置
			pos2 = line.find_last_of(" ");//标记后一个空格位置
			name = line.substr(0,pos1);//读取名字
			price = atoi(line.substr(pos1+1,pos2).c_str());//读取价格
			num = atoi(line.substr(pos2).c_str());//读取数量
			if(price > 0){
				this->goods[i].good(name,price,num);//保存到购物车中
				this->cart_num++;//商品种类增加
			}
		}
		else{
			break;
		}
	}
	
	fin.close();//关闭文件流
}

void Cart::save(int id){//从程序中保存到文件
	string path = "Cart/";
	path.append(to_string(id));
	path.append(".txt");
	
	ofstream fout;
	fout.open(path,ios::out);//写入流
	string name;
	int price,num;//暂存变量
	for(int i = 0;i < this->cart_num;i++){//循环写入
		if(this->goods[i].get_price() > 0){
			name = this->goods[i].get_name();
			price = this->goods[i].get_price();
			num = this->goods[i].get_num();
			fout<<name<<" "<<price<<" "<<num<<endl;//写入
		}
	}
	fout.close();//关闭
}

void Cart::change_name(int id,string name){
	this->goods[id].good(name,this->goods[id].get_price(),this->goods[id].get_num());
}

void Cart::change_price(int id,int price){
	this->goods[id].good(this->goods[id].get_name(),price,this->goods[id].get_num());
}

void Cart::change_num(int id,int num){
	this->goods[id].good(this->goods[id].get_name(),this->goods[id].get_price(),num);
}



/*Discount*/
void Dis_sum::creat(){//初始化折扣券
	int n = 10;//控制折扣最高值
   	time_t t;
	srand((unsigned) time(&t));
	
    string randomString;
    for(int j = 0;j < MAX_DIS_NUM;j++){
    	this->dis[j].discount = (rand()%100/(double)100) * n + 0.01;
   		for (int i = 0; i < MAX_CODE_LEN; ++i) {
			int randomCharType = rand() % 3; // 0 for uppercase, 1 for lowercase, 2 for digit
			if (randomCharType == 0) {
    	       	randomString += 'A' + rand() % 26; // Uppercase letter
   	    	} else if (randomCharType == 1) {
				randomString += 'a' + rand() % 26; // Lowercase letter
			} else {
				randomString += '0' + rand() % 10; // Digit
			}
		}
		this->dis[j].code = randomString;
		randomString.clear();
		this->dis_num++;
	}
}

Discount Dis_sum::draw(){//抽取折扣券
	srand(time(0));
	int pro = 10;
	return dis[rand()%10];
}

double Dis_sum::use(string in){//使用折扣券
	int flag = -1;
	for(int i = 0;i < this->dis_num;i++){//寻找符合的兑换码
		if(in == this->dis[i].code){
			flag = i;
			break;
		}
	}
	if(flag == -1){//如果没找到，返回0
		return 0.0;
	}
	else{
		return this->get_discount(flag);
	}
}

void Dis_sum::Display(){//展示
	cout<<"ID\tCode\t\t\t\tDiscount"<<endl;
	for(int i = 0;i < this->dis_num;i++){
		if(this->dis[i].discount>0.0){
			Display(i);
		}
	}
}

void Dis_sum::Display(int id){
	cout<<id<<"\t"<<this->get_code(id)<<"\t\t\t"<<this->get_discount(id)<<endl;
}

string Dis_sum::get_code(int id){
	return this->dis[id].code;
}

double Dis_sum::get_discount(int id){
	return this->dis[id].discount;
}


/*Record_sum*/
bool Record_sum::add_rec(Record re){
	int flag = -1;
	for(int i = 0;i < MAX_RECORD;i++){
		if(this->rec[i].is_empty()){
			flag = i;
			break;
		}
	}
	if(flag == -1){
		return 0;
	}
	else{
		this->rec[flag] = re;
		this->re_num++;
//		this->save();
		return 1;
	}
};

bool Record_sum::add_rec(char c,int uid,int gid,int gnum){
	Record re;
	re.ope = c;
	re.uid = uid;
	re.gid = gid;
	re.g_num = gnum;
	re.time_s = time2str(time(NULL));
	return add_rec(re);
};

bool Record_sum::add_rec(string time_s,char c,int uid,int gid,int gnum){
	Record re;
	re.ope = c;
	re.uid = uid;
	re.gid = gid;
	re.g_num = gnum;
	re.time_s = time_s;
	return add_rec(re);
};

Record Record_sum::get_rec(int id){
	return this->rec[id];
};

int Record_sum::get_uid(int id){
	return this->rec[id].uid;
};

string Record_sum::get_tim(int id){
	return this->rec[id].time_s;
};

void Record_sum::Display(int id){
	Record re;
	re = this->rec[id];
	cout<<re.time_s<<"\t"<<re.ope<<"\t\t"<<re.uid<<"\t"<<re.gid<<"\t"<<re.g_num<<endl;
};

void Record_sum::Display(){
	cout<<"TIME\t\t\tOperation\tUID\tGID\tNUM"<<endl;
	for(int i = 0;i < this->re_num;i++){
		if(!this->rec[i].is_empty()){
			Display(i);
		}
	}
	cout<<"Tips: '+' means plus, '-' means minus, '#' means check."<<endl;
};

void Record_sum::Display(int user,Cart cart,string intim,string outtime){
	Record temp;
	cout<<"TIME\t\t\tOperation\tUID\tGID\tNum\tPrice"<<endl;
	for(int i = 0;i < this->re_num;i++){
		temp = this->rec[i];
		if(temp.uid == user&&compare_date(temp.time_s,intim) >= 0&&compare_date(outtime,temp.time_s) >= 0){
			cout<<temp.time_s<<"\t"<<temp.ope<<"\t\t"<<temp.uid<<"\t"<<temp.gid<<"\t"<<temp.g_num<<"\t"<<cart.get_price(temp.gid)<<endl;
		}
	}
	cout<<"Tips: '+' means plus, '-' means minus, '#' means check."<<endl;
};

void Record_sum::save(){
	string path = "History.txt";
	ofstream fout;
	fout.open(path,ios::out);//写入流
	char ope;
	int uid;
	int gid;
	int g_num;
	string time_s;
	Record temp;//暂存变量
	for(int i = 0;i < this->re_num;i++){//循环写入
		temp = this->rec[i];
		if(!temp.is_empty()){
			time_s = temp.time_s;
			ope = temp.ope;
			uid = temp.uid;
			gid = temp.gid;
			g_num = temp.g_num;
			fout<<time_s<<" "<<ope<<" "<<uid<<" "<<gid<<" "<<g_num<<endl;//写入
		}
	}
	fout.close();//关闭
};

void Record_sum::load(){//从文件中加载
	string path = "History.txt";
	
	ifstream fin;
	fin.open(path,ios::in);//读入流
	
	this->re_num = 0;//每次读取都初始化用户数量
	string line,s1,time_s;
	char c;
	int uid,gid,gnum;//暂存变量
	
	size_t pos1,pos2,pos3,pose;//处理String需要位置变量
	
	for(int i=0;i<MAX_RECORD;i++){//循环读入记录
		if(getline(fin,line)){//输入流读取每一行
			pos1 = line.find_last_of(":");
			pose = line.find_last_of(" ");
			pos2 = line.substr(pos1+6).find_first_of(" ");
			pos3 = line.substr(pos1+6).find_last_of(" ");
			
			time_s = line.substr(0,pos1+3);
			s1 = line.substr(pos1+6);
			
			uid = atoi(s1.substr(0,pos2).c_str());
			gid = atoi(s1.substr(pos2+1,pos3-2).c_str());
			c = line.substr(pos1+4).c_str()[0];
			gnum = atoi(line.substr(pose).c_str());
			//对每一行进行处理读取数据
			if(gnum > 0){
				this->add_rec(time_s,c,uid,gid,gnum);//保存到记录中
				this->re_num++;//记录数量增加
			}
		}
		else{
			break;//退出
		}
	}
	
	fin.close();//关闭文件流
};

//int main(){
//	Record_sum rec = Record_sum();
//	rec.load();
//	rec.Display();
//	Cart cart = Cart();
//	cart.load(1);
////	cout<<rec.add_rec("2023-12-17 11:42:01",'+',1,1,10)<<endl;
//	rec.Display(1,cart,"2023-12-17 11:42:20","2023-12-17 14:00:52");
//	rec.Display();
//	rec.save();
//}

///*
int main(){
	int mode = 1,usermode = 1,admmode = 1,shopmode = 1,editmode = 1,YON = 1;//循环模式控制
	int id = 0;//当前使用用户
	int gid = 0;//当前商品
	int goodnum = 0;//商品数量
	double hol_dis = 0.9;//节日折扣
	double discount = 0.0;
	string password,name,change_pass,change_name,in,intime,outtime,s1,s2;//读内容
	int change_price,change_num;
	User_sum alluser;//初始化用户列表
//	alluser.load();//从文件读取
	Dis_sum all_dis = Dis_sum();
	Record_sum rec = Record_sum();
	Cart cart = Cart();
	Cart shop = Cart();
	rec.load();
	shop.load(-1);
	srand(time(0));
	Admin adm("123");//管理员密码
	
	while(mode){//主菜单
		mode = 1;//主菜单模式选择
		cout<<"Who are you?"<<endl;
		cout<<"0-Quit"<<endl;//退出程序
		cout<<"1-Customer Log in"<<endl;//用户登录
		cout<<"2-Customer Register"<<endl;//用户注册
		cout<<"3-Admin"<<endl;//管理员登录
		cin>>mode;//读取模式
		alluser.load();//加载用户表单
		switch(mode){//加载模式
			case 0:system("cls");break;//退出程序
			case 1:{//顾客登录
				cout<<"Input your ID:"<<endl;
				cin>>id;//读取ID
				cout<<"Input your password:"<<endl;
				cin>>password;//读取密码
				if(alluser.confirm_pass(id,password)){//验证密码
					cout<<"Login successful"<<endl;
					usermode = 1;
					while(usermode){//顾客界面
						usermode = 1;
						cout<<"What do you want to do,"<<alluser.get_user(id).get_name()<<"?"<<endl;
						cout<<"0-Quit"<<endl;
						cout<<"1-Go to shop"<<endl;//购物车功能
						cout<<"2-Log out"<<endl;//登出，返回上一级
						cout<<"3-Change password"<<endl;//修改密码
						cout<<"4-Change name"<<endl;//修改名称
						cout<<"5-Check shopping histroy"<<endl;
						cin>>usermode;
						switch(usermode){
							case 0:{//退出程序
								system("cls");
								break;
							}
							case 1:{//访问商店
//								cout<<"Sorry,System Maintaining."<<endl;
								system("cls");
								cart.load(id);
								shopmode = 1;
								while(shopmode){
									cart.load(id);//加载顾客购物车
									cout<<endl<<"S H O P"<<endl<<endl;
									shop.Display();//展示商店
									cout<<endl<<"C A R T"<<endl<<endl;
									cart.Display();//展示购物车
									shopmode = 1;
									cout<<"\nWhat do you want to do,"<<alluser.get_user(id).get_name()<<"?"<<endl;
									cout<<"0-Quit"<<endl;
									cout<<"1-Add to cart"<<endl;
									cout<<"2-Delete good"<<endl;
									cout<<"3-Minus good"<<endl;
									cout<<"4-Find good"<<endl;
									cout<<"5-Check"<<endl;
									cin>>shopmode;
									switch(shopmode){//商店界面
										case 0:system("cls");break;
										case 1:{//加入商品
											goodnum = 0;
											cout<<"Input ID (in shop) of the good to add:"<<endl;
											cin>>gid;
											cout<<"Input amount u want:"<<endl;
											cin>>goodnum;
											if(shop.get_num(gid) >= goodnum){
												cart.add_good(shop.buy_good(gid,goodnum));
												cout<<"Trade successful."<<endl;
												cout<<endl;
												cart.save(id);
												shop.save(-1);
												
												rec.add_rec('+',id,gid,goodnum);
											}
											else{
												cout<<"Input error."<<endl;
											}
											break;
										}
										case 2:{//删除商品
											cout<<"Input ID (in cart) of the good to delete:"<<endl;
											cin>>gid;
											Good curgood = Good();
											curgood.assign(cart.get_good(gid));
											goodnum = cart.get_num(gid);
											if(cart.del_good(gid)){
												cout<<"Delete successful."<<endl;
												cout<<endl;
												shop.add_good(curgood);
												cart.save(id);
												shop.save(-1);
												
												rec.add_rec('-',id,gid,goodnum);
											}
											else{
												cout<<"Input error."<<endl;
											}
											break;
										}
										case 3:{//减少商品
											goodnum = 0;
											cout<<"Input ID (in cart) of the good to minus:"<<endl;
											cin>>gid;
											cout<<"Input amount to minus:"<<endl;
											cin>>goodnum;
											if(cart.get_num(gid) >= goodnum){
												shop.add_good(cart.buy_good(gid,goodnum));
												cout<<"Minus successful."<<endl;
												cout<<endl;
												cart.save(id);
												shop.save(-1);
												
												rec.add_rec('-',id,gid,goodnum);
											}
											else{
												cout<<"Input error."<<endl;
											}
											break;
										}
										case 4:{//搜索商品
											cout<<"Input name of the good to search:"<<endl;
											cin>>name;
											shop.Find(name);
											break;
										}
										case 5:{//付款
											if(rand()%10 == 0){
												cout<<"You get a discount!"<<endl;
												cout<<"ID\tCode\t\t\t\tDiscount"<<endl;
												all_dis.Display(rand()%10);
												cout<<"Remember it and use it next time."<<endl;
											}
											cout<<"Do you have discount code?"<<endl;
											cout<<"1-Yes"<<endl;
											cout<<"2-No"<<endl;
											cin>>YON;
											if(YON == 1){
												cout<<"Input the discount code:"<<endl;
												cin>>in;
												discount = all_dis.use(in);
											}
											if(cart.Check(id,rec,discount,hol_dis)){
												cart.save(id);
												cout<<"Pay successful"<<endl;
											}
											else{
												cout<<"Pay failed"<<endl;
											}
											break;
										}
									}
									rec.save();
								}
								break;
							}
							case 2:{//登出，返回上一级
								usermode = 0;
//								mode = 1;
								break;
							}
							case 3:{//修改密码
								cout<<"Input your new password:"<<endl;
								cin>>change_pass;
								alluser.change_pass(id,change_pass);
								alluser.save();//保存修改
								cout<<"Change successful."<<endl;
								usermode = 0;
								break;
							}
							case 4:{//修改密码
								cout<<"Input your new name:"<<endl;
								cin>>name;
								alluser.change_name(id,name);
								alluser.save();//保存修改
								cout<<"Change successful."<<endl;
								break;
							}
							case 5:{//查询历史
								cout<<"Input the beginning time(like 1970-01-01 00:00:00):"<<endl;//输入开始时间
								cin>>s1;//日期
								cin>>s2;//时刻
								intime = s1.append(" " + s2);//合成时间
								cout<<"Input the ending time(like 1970-01-01 00:00:00):"<<endl;//输入结束时间
								cin>>s1;//日期
								cin>>s2;//时刻
								outtime = s1.append(" " + s2);//合成时间
								cart.load(id);//读取购物车
								rec.Display(id,cart,intime,outtime);//按时间输出
								break;
							}
							default:{
								cout<<"Input error."<<endl;//错误输入
								break;
							}
						}
					}
				}
				else{
					cout<<"Password error,Login failed."<<endl;//密码错误
				}
				break;
			}
			case 2:{//用户注册
				cout<<"Input your name:"<<endl;
				cin>>name;
				cout<<"Input your password:"<<endl;
				cin>>password;
				if(alluser.add_user(name,password)){//增加用户
					alluser.save();//保存修改
					cout<<"Register successful, your id is "<<alluser.get_num() - 1<<" ."<<endl;//输出ID
				}
				else{
					cout<<"Register failed."<<endl;//注册失败
				}
				break;
			}
			case 3:{//管理员登录
				cout<<"Hi, sky, Input password:"<<endl;
				cin>>password;
				if(adm.get_pass() == password){
					cout<<"Login successful"<<endl;
					admmode = 1;
					while(admmode){//管理员面板
						system("cls");
						cout<<"What do you want to do, Sky?"<<endl;
						cout<<"0-Quit"<<endl;//返回上一级
						cout<<"1-Edit user"<<endl;//编辑用户
						cout<<"2-Edit shop"<<endl;//编辑商店
						cout<<"3-Edit discount"<<endl;//编辑折扣
						cout<<"4-View record"<<endl;//展示购物记录
						cin>>admmode;
						switch(admmode){
							case 0:{//返回上一级
								system("cls");
								admmode = 0;
								break;
							}
							case 1:{//编辑用户
								editmode = 1;//初始化防止异常退出
								while(editmode){//账户编辑界面
									cout<<"Which account do you want to edit, Sky?"<<endl;
									for(int i = 0;i < alluser.get_num();i++){
										cout<<i+1<<"-"<<alluser.get_user(i).get_name()<<endl;//展示用户信息
									}
									cin>>id;
									cout<<"What do you want to edit, Sky?"<<endl;
									cout<<"0-Quit"<<endl;//返回上一级
									cout<<"1-Password"<<endl;//修改密码
									cout<<"2-Name"<<endl;//修改名字
									cin>>editmode;
									switch(editmode){
										case 0:{//返回上一级
											system("cls");
											editmode = 0;
											break;
										}
										case 1:{//修改密码
											cout<<"Input "<<alluser.get_user(id).get_name()<<"\'s new password:"<<endl;
											cin>>change_pass;
											alluser.change_pass(id,change_pass);
											alluser.save();
											cout<<"Change successful."<<endl;
											break;
										}
										case 2:{//修改名字
											cout<<"Input "<<alluser.get_user(id).get_name()<<"\'s new name:"<<endl;
											cin>>change_name;
											alluser.change_name(id,change_name);
											alluser.save();
											cout<<"Change successful."<<endl;
											break;
										}
										default:{
											cout<<"Input error."<<endl;
											break;
										}
									}
									break;
								}
								break;
							}
							case 2:{//编辑商店
								editmode = 1;//初始化防止异常退出
								while(editmode){//商品编辑界面
									cout<<"What do you want to edit, Sky?"<<endl;
									cout<<"0-Quit"<<endl;//返回上一级
									cout<<"1-Name"<<endl;//修改名称
									cout<<"2-Price"<<endl;//修改价格
									cout<<"3-Amount"<<endl;//修改数量
									cout<<"4-Delete"<<endl;//删除商品
									cout<<"5-Add"<<endl;//增加商品
									cin>>editmode;//读入模式
									if(editmode != 5){
										cout<<"Which item do you want to edit, Sky?"<<endl;
										shop.Display();
										cin>>gid;
									}
									switch(editmode){
										case 0:{
											system("cls");
											editmode = 0;
											break;
										}
										case 1:{//修改名字
											cout<<"Input "<<shop.get_good(gid).get_name()<<"\'s new name:"<<endl;
											cin>>change_name;
											shop.change_name(id,change_name);
											shop.save(-1);
											cout<<"Change successful."<<endl;//成功修改
											break;
										}
										case 2:{//修改价格
											cout<<"Input "<<shop.get_good(gid).get_name()<<"\'s new price:"<<endl;
											cin>>change_price;
											shop.change_price(id,change_price);
											shop.save(-1);
											cout<<"Change successful."<<endl;//成功修改
											break;
										}
										case 3:{//修改数量
											cout<<"Input "<<shop.get_good(gid).get_name()<<"\'s new number:"<<endl;
											cin>>change_num;
											shop.change_num(id,change_num);
											shop.save(-1);
											cout<<"Change successful."<<endl;//成功修改
											break;
										}
										case 4:{//删除商品
											shop.del_good(id);
											shop.save(-1);
											cout<<"Delete successful."<<endl;//成功删除
											break;
										}
										case 5:{
											cout<<"Input name:"<<endl;//输入名称
											cin>>name;
											cout<<"Input price:"<<endl;//输入价格
											cin>>change_price;
											cout<<"Input number:"<<endl;//输入数量
											cin>>change_num;
											shop.add_good(name,change_price,change_num);//加入商店
											shop.save(-1);
											cout<<"Add successful."<<endl;
											break;
										}
										default:{
											cout<<"Input error."<<endl;
											break;
										}
									}
								}	
							}
							case 3:{//编辑优惠折扣
								all_dis.Display();//展示所有优惠券
								editmode = 1;
								while(editmode){//折扣编辑模式
									cout<<"What do you want to edit, Sky?"<<endl;
									cout<<"0-Quit"<<endl;//返回上一级
									cout<<"1-Edit holiday discount"<<endl;//编辑折扣
									cin>>editmode;//读入编辑模式
									switch(editmode){//编辑模式
										case 0:{
											system("cls");
											editmode = 0;
											break;
										}
										case 1:{//修改节日数值
											cout<<"Tnput holiday discount:"<<endl;
											cin>>hol_dis;//读入折扣
											if(hol_dis >= 0 && hol_dis < 100){cout<<"Edit successful."<<endl;}//输入成功
											else{cout<<"Input error."<<endl;}//返回错误
											break;
										}
										default:{
											cout<<"Input error."<<endl;//返回错误
											break;
										}
									}
								}
								break;
							}
							case 4:{//展示购物记录
								rec.Display();//展示全部记录
								system("pause");//暂停，等待输入
								break;
							}
							default:{//错误输入
								cout<<"Input error."<<endl;//返回错误
								break;
							}
						}
					}
				}
				break;
			}
			default:{//错误输入
				cout<<"Input error."<<endl;//返回错误
				break;
			}
		}
	}
	exit(0);
	system("exit");
}
//*/