sellfunction.c

在LINUX下实现的一个超市的收银系统

#include "extern.h"
#include "struct.h"
/*======================销售函数=====================*/

/*=================添加明细==============*/
void AddDetail()
{
	struct Sell * buf;

	int i,j,temp,mer_amount;
	char bar_code[15],num[15];

	i=0;
	j=0;
	temp=0;
	mer_amount= 0;

	WINDOW *add_sell_win = newwin(8,30,8,25);
	WINDOW *bar_code_win = subwin(add_sell_win,1,15,10,33);
	WINDOW *num_win = subwin(add_sell_win,1,15,13,33);

	wbkgd(add_sell_win,COLOR_PAIR(2));
	box(add_sell_win,0,0);
	mvwprintw(add_sell_win,0,10,"添加明细");
	mvwprintw(add_sell_win,2,1,"条形码:");
	mvwprintw(add_sell_win,5,3,"数量:");

	wbkgd(bar_code_win,COLOR_PAIR(10));
	touchwin(add_sell_win);
	wrefresh(add_sell_win);
	wrefresh(bar_code_win);
	   
	wbkgd(num_win,COLOR_PAIR(10));
	touchwin(add_sell_win);
	wrefresh(add_sell_win);
	wrefresh(num_win);
	
	//要求输入条形码
	do
	{
		memset(bar_code,0,sizeof(bar_code));
		mvwgetnstr(bar_code_win,0,0,bar_code,15);

		if(bar_code[0] != 'C')
		{
			ShowMessage("	 输入错误第一个必须为“C”");
			touchwin(sell_main_win);
			wrefresh(sell_main_win);
			touchwin(add_sell_win);
			wrefresh(add_sell_win);
			wclrtoeol(bar_code_win);
			continue;
		}
		if(bar_code[1] != 'N')
		{
			ShowMessage("     输入错误，第2个必须为“N”");
			touchwin(sell_main_win);
			wrefresh(sell_main_win);
			touchwin(add_sell_win);
			wrefresh(add_sell_win);
			wclrtoeol(bar_code_win);
			continue;
		}
		if(strlen(bar_code) > 8)
		{
			ShowMessage("    输入的字符太长了，必须为8位");
			touchwin(sell_main_win);
			wrefresh(sell_main_win);
			touchwin(add_sell_win);
			wrefresh(add_sell_win);
			wclrtoeol(bar_code_win);
			continue;
		}
		for(i=2;i<=7;i++)
		{
			if(isdigit(bar_code[i]))
			{
				continue;
			}
			temp=1;
			ShowMessage("    输入错误，后面6位必须为数字");
			touchwin(sell_main_win);
			wrefresh(sell_main_win);
			touchwin(add_sell_win);
			wrefresh(add_sell_win);
			wclrtoeol(bar_code_win);
			continue;
		}
		if(1 == temp)
		{
			temp = 0;
			continue;
		}
		//当输入的条形码正确的时候
		//查询输入的条形码是否存在
		if(!SearchBarCode(bar_code,MER_NAME,MER_UNIT,MER_SPEC,&MER_PRICE,&MER_STOCK))
		{
			ShowMessage("    你输入的条形码不存在，请重新输入");
			touchwin(sell_main_win);
			wrefresh(sell_main_win);
			touchwin(add_sell_win);
			wrefresh(add_sell_win);
			wclrtoeol(bar_code_win);
			continue;
		}
		break;
	}while (1);

	//要求输入数量
	do
	{
		memset(num,0,sizeof(num));
		mvwgetnstr(num_win,0,0,num,15);
		for(i=0;i<strlen(num);i++)
		{
			if(!isdigit(num[i]))
			{
				temp = 1;
				ShowMessage("       输入错误，必须输入整数");
				touchwin(sell_main_win);
				wrefresh(sell_main_win);
				touchwin(add_sell_win);
				wrefresh(add_sell_win);
				wclrtoeol(num_win);
				break;
			}
		}
		if(1 == temp)
		{
			temp = 0;
			continue;
		}
		//判断输入的数字是否超过库存
		mer_amount = atoi(num);
		if(mer_amount > MER_STOCK)
		{
			ShowMessage("        库存不足，请重新输入");
			touchwin(sell_main_win);
			wrefresh(sell_main_win);
			touchwin(add_sell_win);
			wrefresh(add_sell_win);
			wclrtoeol(num_win);
			continue;
		}
		break;	
	}while (1);
	//销售列表里面有相同的商品,只要进行相加就可以了
	buf = IsTheSameMer(bar_code);

	if(buf != NULL)
	{
		buf->mer_amount = buf->mer_amount + mer_amount;
		buf->total_money = buf->mer_amount * buf->sell_price;
		
		//删除当前窗口
		delwin(add_sell_win);
		ShowMessage("           添加商品成功");
		touchwin(sell_main_win);
		wrefresh(sell_main_win);
		
		PrintSellInfo();
	}
	//销售列表为空
	else
	{
		MER_AMOUNT = mer_amount;
		TOTAL_MONEY = MER_PRICE * mer_amount;

		InputDateToStruct(bar_code,MER_NAME,MER_UNIT,MER_SPEC,MER_PRICE,MER_AMOUNT,TOTAL_MONEY);
		
		//删除当前窗口
		delwin(add_sell_win);
		ShowMessage("           添加商品成功");
		PrintSellInfo();			
	}
}

/*=================删除明细===============*/
void DelDetail()
{
	//判断有没有数据,如果没有的话,不可以收银
	if(head->next == NULL)
	{
		ShowMessage("        没有数据,不允许删除");
		touchwin(sell_main_win);
		wrefresh(sell_main_win);
		return;
	}

	struct Sell * buf;
	
	char bar_code[15],num[15];
	int i,j,temp,mer_amount;

	i=0;
	j=0;
	temp=0;
	
	WINDOW *del_win = newwin(8,30,8,25);
	WINDOW *bar_code_win = subwin(del_win,1,15,10,33);
	WINDOW *num_win = subwin(del_win,1,15,13,33);

	wbkgd(del_win,COLOR_PAIR(2));
	box(del_win,0,0);
	mvwprintw(del_win,0,10,"删除明细");
	mvwprintw(del_win,2,1,"条形码:");
	mvwprintw(del_win,5,3,"数量:");
	wrefresh(del_win);

	wbkgd(bar_code_win,COLOR_PAIR(10));
	touchwin(del_win);
	wrefresh(del_win);
	wrefresh(bar_code_win);
	   
	wbkgd(num_win,COLOR_PAIR(10));
	touchwin(del_win);
	wrefresh(del_win);
	wrefresh(num_win);
	
	//要求输入条形码
	do
	{
		memset(bar_code,0,sizeof(bar_code));
		mvwgetnstr(bar_code_win,0,0,bar_code,15);

		if(bar_code[0] != 'C')
		{
			ShowMessage("	 输入错误第一个必须为“C”");
			touchwin(sell_main_win);
			wrefresh(sell_main_win);
			touchwin(del_win);
			wrefresh(del_win);
			wclrtoeol(bar_code_win);
			wrefresh(bar_code_win);
			continue;
		}
		if(bar_code[1] != 'N')
		{
			ShowMessage("     输入错误，第2个必须为“N”");
			touchwin(sell_main_win);
			wrefresh(sell_main_win);
			touchwin(del_win);
			wrefresh(del_win);
			wclrtoeol(bar_code_win);
			wrefresh(bar_code_win);
			continue;
		}
		if(strlen(bar_code) > 8)
		{
			ShowMessage("     输入的字符太长了，必须为8位");
			touchwin(sell_main_win);
			wrefresh(sell_main_win);
			touchwin(del_win);
			wrefresh(del_win);
			wclrtoeol(bar_code_win);
			wrefresh(bar_code_win);
			continue;
		}
		for(i=2;i<=7;i++)
		{
			if(isdigit(bar_code[i]))
			{
				continue;
			}
			temp=1;
			ShowMessage("     输入错误，后面6位必须为数字");
			touchwin(sell_main_win);
			wrefresh(sell_main_win);
			touchwin(del_win);
			wrefresh(del_win);
			wclrtoeol(bar_code_win);
			wrefresh(bar_code_win);
			continue;
		}
		if(1 == temp)
		{
			temp = 0;
			continue;
		}
		//查询输入的条形码在销售表是总否存在
		buf = IsTheSameMer(bar_code);
		if(buf == NULL)
		{
			ShowMessage("    条形码不再销售列表，不能删除");
			touchwin(sell_main_win);
			wrefresh(sell_main_win);
			touchwin(del_win);
			wrefresh(del_win);
			wclrtoeol(bar_code_win);
			wrefresh(bar_code_win);
			continue;
		}
		break;
	}while (1);
	
	//要求输入数量
	do
	{
		memset(num,0,sizeof(num));
		mvwgetnstr(num_win,0,0,num,15);
		for(i=0;i<strlen(num);i++)
		{
			if(!isdigit(num[i]))
			{
				temp = 1;
				ShowMessage("        输入错误，必须输入整数");
				touchwin(sell_main_win);
				wrefresh(sell_main_win);
				touchwin(del_win);
				wrefresh(del_win);
				wclrtoeol(num_win);
				wrefresh(num_win);
				break;
			}
		}
		if(1 == temp)
		{
			temp = 0;
			continue;
		}
		if(0 == strlen(num))
		{
			ShowMessage("        输入不允许为空，请重新输入");
			touchwin(sell_main_win);
			wrefresh(sell_main_win);
			touchwin(del_win);
			wrefresh(del_win);
			wclrtoeol(num_win);
			wrefresh(num_win);
			continue;
		}
		//判断输入的数字是否超过库存
		mer_amount = atoi(num);
		if(mer_amount >  buf->mer_amount)
		{
			ShowMessage("        输入的数量太大，请重新输入");
			touchwin(sell_main_win);
			wrefresh(sell_main_win);
			touchwin(del_win);
			wrefresh(del_win);
			wclrtoeol(num_win);
			wrefresh(num_win);
			continue;
		}
		break;	
	}while (1);

	//用户要删除一种的商品的情况
	if(mer_amount == buf->mer_amount)
	{
		p1 = head;			
		while(p1->next != NULL)
		{	
			p2=p1;
			p1=p1->next;
			//判断是否有相同的条形码
			if(!strncmp(buf->bar_code,p1->bar_code, strlen(buf->bar_code)))
			{
				p2->next = p1->next;
				free(buf);
				break;
			}
		}
	}

	//用户要删除部分商品
	else
	{
		buf->mer_amount = buf->mer_amount - mer_amount;
		buf->total_money = buf->mer_amount * buf->sell_price;		
	}
	//删除窗口
	delwin(del_win);
	ShowMessage("          删除商品成功");
	touchwin(sell_main_win);
	wrefresh(sell_main_win);
	PrintSellInfo();
}

/*=================收银============*/
void GetMoney()
{
	//判断有没有数据,如果没有的话,不可以收银
	if(head->next == NULL)
	{
		ShowMessage("        没有数据,不允许收银");
		touchwin(sell_main_win);
		wrefresh(sell_main_win);
		return;
	}
	
	struct Sell * buf;

	char user_pay[15],ch,SELL_DETAIL_NO[20];

	float  get_money,pay,zhaoling,fact_pay,f;

	int i,j,temp,business_no,p,alter_state,save_sell_detail_state,sell_detail_no;	
	business_no=0;
	temp=0;
	i=0;
	j=0;
	get_money = 0 ;
	alter_state = 1;
	save_sell_detail_state = 1;

	strncpy(SELL_DETAIL_NO,"0001",strlen("0001"));

	WINDOW *get_money_win = newwin(10,30,7,25);
	
	WINDOW *user_pay_win = subwin(get_money_win,1,15,9,38);//用户付款  50
	WINDOW *should_pay_win = subwin(get_money_win,1,15,11,38);//实际要付的,比如20.15
	WINDOW *fact_pay_win = subwin(get_money_win,1,15,13,38);//实际收的,实际收20.2
	WINDOW *zhaoling_win = subwin(get_money_win,1,15,15,38);//找零钱	29.8

	wbkgd(get_money_win,COLOR_PAIR(10));
	box(get_money_win,0,0);
	mvwprintw(get_money_win,0,13,"收银:");
	mvwprintw(get_money_win,2,2,"用户付款:");
	mvwprintw(get_money_win,4,7,"应收:");
	mvwprintw(get_money_win,6,7,"实收:");
	mvwprintw(get_money_win,8,7,"找零:");
	wrefresh(get_money_win);

	wbkgd(user_pay_win,COLOR_PAIR(2));
	wrefresh(user_pay_win);

	wbkgd(should_pay_win,COLOR_PAIR(2));
	wrefresh(should_pay_win);

	wbkgd(fact_pay_win,COLOR_PAIR(2));
	wrefresh(fact_pay_win);

	wbkgd(zhaoling_win,COLOR_PAIR(2));
	wrefresh(zhaoling_win);

	buf = head->next;
	
	while (buf != NULL)
	{
		get_money = get_money + buf->total_money;			
		buf = buf->next;	
	}
	//打印出用户付的和实际要付的
	mvwprintw(should_pay_win,0,0,"%.2f",get_money);
	wrefresh(should_pay_win);
	//实际收的钱进行四舍五入
	fact_pay =0;
	p = (int)(get_money*10 + 0.5);
	f =(float)p/10;
	fact_pay = f;
	mvwprintw(fact_pay_win,0,0,"%.1f",fact_pay);
	wrefresh(fact_pay_win);

	//要求输入用户付款金额
	do
	{
		memset(user_pay,0,sizeof(fact_pay));
		mvwgetnstr(user_pay_win,0,0,user_pay,15);

		for(i=0;i<strlen(user_pay);i++)
		{
			if(user_pay[i] == '.')
			{
				j++;
				continue;
			}
			if(!isdigit(user_pay[i]))
			{
				temp = 1;
				break;
			}
		}
		if(1 == temp)
		{			
			ShowMessage("        输入错误，输入的必须为数字");
			touchwin(sell_main_win);
			wrefresh(sell_main_win);
			touchwin(get_money_win);
			wrefresh(get_money_win);
			wclrtoeol(user_pay_win);
			wrefresh(user_pay_win);
			continue;
		}
		if( 2 == j)
		{
			ShowMessage("      您输入了2个小数点，请重新输入");
			touchwin(sell_main_win);
			wrefresh(sell_main_win);
			touchwin(get_money_win);
			wrefresh(get_money_win);
			wclrtoeol(user_pay_win);
			wrefresh(user_pay_win);
			continue;
		}
			
		pay = atof(user_pay);//把用户付的款转换成FLOAT型
		if(pay < get_money)
		{
			ShowMessage("      您输入的金额不够，请重新输入");
			touchwin(sell_main_win);
			wrefresh(sell_main_win);
			touchwin(get_money_win);
			wrefresh(get_money_win);
			wclrtoeol(user_pay_win);
			wrefresh(user_pay_win);
			continue;
		}
		break;
	}while (1);

	//打印出实收金额
	mvwprintw(user_pay_win,0,0,"%.1f",pay);
	wrefresh(user_pay_win);

	//打印出找零金额
	zhaoling = pay-fact_pay;
	mvwprintw(zhaoling_win,0,0,"%.1f",zhaoling);
	wrefresh(zhaoling_win);
	
	ch = '\0';
	noecho();
	ch = mvwgetch(get_money_win,8,14);
	echo();

	//首先,把销售单号求出来
	char tmp[100];
	strncpy(tmp,System_Time,100);
	strcpy(SELL_NO,strcat(tmp,BUSINESS_NO));
	
	//保存销售记录到销售表
	
	if(SaveSellInfoToDb(SELL_NO,BUSINESS_NO,ACCOUNTID,System_Time,pay,fact_pay,get_money,zhaoling,SELL_STATE) )
	{
		ShowMessage("         保存销售记录成功 ");
		touchwin(sell_main_win);
		wrefresh(sell_main_win);
	}
	else
	{
		ShowMessage("        保存销售记录失败...... ");
		touchwin(sell_main_win);
		wrefresh(sell_main_win);
	}
	//保存销售明细到销售明细表
	buf = head->next;

	sell_detail_no = atoi(SELL_DETAIL_NO);
	sprintf(SELL_DETAIL_NO,"%04d",sell_detail_no);