customer.cpp

Ｃ语言做的超市进销存源代码文件

#include"customer.h"
#include<iostream>
#include<fstream>
#include<windows.h>
#include<vector>
#include<iomanip>
#include<sstream>
#include<conio.h>
#include<cctype>
using namespace std;
void  inline get_number(int& number)
{
	while(1)
	{
		cin>>number;
		if(cin.fail())
		{
			cin.clear(ios::goodbit);
			fflush(stdin);
			cout<<"出错啦!重试!"<<endl;		
		}
		else break;
	}
}
int Customer::business_time=0;
Customer::Customer()
{
	ifstream if_time;
	if_time.open("business_time.dat");
	if(!if_time) {cerr<<"缺少文件“business_time.dat”";exit(1);}
	if_time.seekg(0);
	if_time>>business_time;//读取流水号
	if_time.close();
	price=0.00;
	sell_file.open("record.txt",ios_base::out|ios::app);
	if(sell_file.fail())
	{
		cerr<<"\n没有帐本记录“record.txt”"<<endl;
		exit(1);
	}
}
Customer::~Customer()
{
	ofstream of_time;
	of_time.open("business_time.dat");
	of_time<<business_time;
	of_time.close();
	sell_file.close();
}
void Customer::view(Market& m)
{
	m.goods_file.seekg(0,ios::beg);
	cout<<"\n请选择你要查询的商品类型:\n1--食品    \t2--生活用品\t3--工具    \n";
	cout<<"4--学习用品\t5--休闲用品\t6--电子产品\n7--穿着衣物\t0--所有商品\n";
	int choice;
	get_number(choice);
	if(choice<8&&choice>=0)
	{
		m.goods_file.seekg(choice*1000*sizeof(goods));
		cout<<"|编号|  名称  |数量| 商品标价 |  进货日期  |"<<endl;
		int max_view=0;
		if(choice==0)max_view=10000;
		else max_view=1000;
		for(int view=0;view<max_view;view++)
		{
			m.goods_file.read((char*)&g,sizeof(goods));
			if(strcmp(g.bar_code,"\0")==0)continue;	
			else
			{
				cout<<setw(4)<<g.serial_number
					<<setw(10)<<g.name
					<<setw(5)<<g.quantity
					<<setw(8)<<g.sell_price
					<<"  "
					<<setw(20)<<g.buy_date;	
				cout<<"_________________________________________________"<<endl;

			}	
		}
	}
	else 
		cout<<"错误"<<endl<<"在选购过程中你可以用命令：v--查看商品、\tEsc--退出/结帐、\t\n";
}
void Customer::buy(Market& m)
{
	goods g_temp;
	cout<<"\n\t\t\t****欢迎光临*****\n";
	cout<<"\t\t\t****请你选购*****\n";
	char c_buy;
	cout<<"在选购过程中你可以用命令：v--查看商品、\tEsc--退出/结帐、\t\n";
	while(1)
	{
		fflush(stdin);
		c_buy=getche();
		if(c_buy==27)break;//Esc退出
		else if(c_buy=='v') view(m);//查看
		else if(isdigit(c_buy))
		{
			cin.putback(c_buy);
			cin>>g.serial_number;
			m.goods_file.seekg(g.serial_number*sizeof(goods));
			m.goods_file.read((char*)&g,sizeof(goods));
			if(strcmp(g.bar_code,"\0")==0)
			{
				cerr<<"\n“你不是在开玩笑吧，我这个店里哪来这个玩意儿?????”"<<endl;
				cerr<<"“该项作废!!!!!”"<<endl;
				continue;
			}
			cout<<"你要购买的数量：";
			get_number(g_temp.quantity);
			if(g_temp.quantity>g.quantity)
			{
				cerr<<"\n“你不是在开玩笑吧，我这个店里哪来这么多"<<g.name<<"……”"<<endl;
				cerr<<"该项作废!!!!!"<<endl;
				continue;
			}
			g.quantity=g_temp.quantity;
			vector.push_back(g);
			cout<<g.quantity<<"个物品"<<g.serial_number<<"已放到购物车……请继续选购：\n";
			cin.ignore();
		}	
		else continue;
	}
}
void Customer::check(Market& m,int account)
{
	int many=vector.size();
	cout<<"  |编号|  名称  |购买数量| 商品标价 |   条形码   "<<      
					"|  进货日期  |"<<endl;
	int i_time=1;
	goods g_temp;
	ostringstream os1,os2;
	SYSTEMTIME st2; 
	GetLocalTime(&st2);
	os1<<st2.wYear<<"/"<<st2.wMonth<<"/"<<st2.wDay;
	string s7=os1.str();
	os2<<st2.wHour<<":"<<st2.wMinute<<":"<<st2.wSecond<<endl;
	string s8=os2.str();
	this->business_time++;//流水号+1；
	sell_file<<"\n\n      ****超市(welcome)*****"<<endl
			<<"店员："<<setw(2)<<setfill('0')<<account<<"    "
			<<"流水号："<<business_time<<endl
			<<"日期："<<setfill(' ')<<s7<<endl
			<<"=========================================="<<endl
			<<"    商品名  数量    编号     单价   总价 "<<endl;
	for(iterator=vector.begin();iterator!=vector.end();++iterator)
	{		
		cout<<i_time++<<"__";
		g.serial_number=(*iterator).serial_number;
		g_temp.quantity=(*iterator).quantity;
		m.goods_file.seekg(g.serial_number*sizeof(goods));
		m.goods_file.read((char*)&g,sizeof(goods));				
		cout<<setw(4)<<g.serial_number
					<<setw(10)<<g.name
					<<setw(5)<<g_temp.quantity<<"   ";
		printf("%8.2f",g.sell_price);//格式化输出				
		cout<<"    "<<setw(10)<<g.bar_code<<"  "			
					<<setw(20)<<g.buy_date<<endl;			
		g.quantity=(g.quantity-g_temp.quantity);//刷新数量	
		m.goods_file.seekg(g.serial_number*sizeof(goods));
		m.goods_file.write((char*)&g,sizeof(goods));//卖出后刷新文件!!
		m.goods_file.seekg(g.serial_number*sizeof(goods));
		m.goods_file.read((char*)&g,sizeof(goods));			
		sell_file<<setw(4)<<setw(10)<<g.name<<setw(5)<<g_temp.quantity
				<<setw(10)<<g.serial_number
					<<setw(8)<<g.sell_price<<"      "				
					<<g_temp.quantity*g.sell_price<<endl;	
		price+=g.sell_price*g_temp.quantity;//统计价格
	}
		float pay;
		if(price==0){}
		else
		{
			cout<<"\n请付"<<price<<"元...谢谢"<<endl;
			cout<<"付款：";	
			cin>>pay;
			if(pay==price){}
			else if(pay<price)
			{
				while(pay<price)
				{
					cout<<"……：";
					int price_on;
					cin>>price_on;
					pay+=price_on;
				}
			}
			else
			{
				cout<<"找您"<<(pay-price)<<"元，请收好!"<<endl;
			}
			cout<<"                欢迎下次再来……"<<endl;
		}
		sell_file<<"收款："<<pay<<ends<<"       找回: "<<pay-price<<endl<<"实收："<<price<<endl;

		sell_file<<"================"<<s8<<endl
			<<"欢迎再次光临****超市\n请保留电脑小票作为退货凭证\n";
		vector.clear();
		price=0;//还原
}