C++ 小型超市管理系统

#include 
#include  
#include  
#include  
#include  


#define password 123456 //管理员密码（隐藏）
#define close_passward 000000 //用户关闭程序密码（隐藏）
#define shoppingcartmax 20 //购物车最大容量
#define goods_path goods_records.dat //商品文件存放
#define sale_path sale_records.dat //销售文件存放
#pragma warning(disable: 4996) //屏蔽安全警告




//商品信息
struct good
{
int id; //商品编号
char name[20]; //商品名称
char kind; //商品类型
int num; //商品数量
float price1; //进货价格
float price2; //出售价格
float date; //生产日期
int baozhiqi; //保质期
struct good *next;
}*good;


//销售信息
struct sale
{
int id; //商品编号
char name[20]; //商品名称
float price1; //进货价格
float price2; //出售价格
int num;//购买数量
char buyer[20];//顾客名字
char time[128];//购买时间
struct sale *next;
}*sale;




void initialization(); //初始化界面


void userwindows(); //用户主程序
void usermenu(); //用户主菜单
void userscan(); //用户浏览
int usercart(); //购物车
void goodsshow(struct good *good); //商品信息显示
void userpay(struct sale *shopping_cart, struct good *address[]);
//结账


void administratorwindows(); //管理员主程序
void administratormenu(); //管理员主菜单
void goodsadd(); //新购商品入库
void goodsdetail(); //商品信息详情
void goodschange(); //商品信息更改
void goodsdelete(); //商品信息删除
void changeoperation(struct good *exist); //更改操作
void deleteoperation(struct good *good); //删除操作
void goodsbrowse(); //商品信息浏览
void allbrowse(); //浏览所有商品
void browsebytype(); //按类型浏览商品
void salemanage(); //商品销售管理
void saveandexit(); //保存并退出


int goodssavetofile(); //保存商品信息
int salesavetofile(); //保存销售信息
int goodsreadfromfile(); //读取商品记录
int salereadfromfile(); //读取销售记录


struct good *goodsfind(); //商品信息查找选择
struct good *goodsidfind(int goods_number);  //根据id查找
struct good *goodsnamefind(char goods_name[20]);  //根据名称查找




int main()
{
initialization();


while (1)//程序运行
{
userwindows();
//用户员主界面
administratorwindows();
//管理员主界面
}
return 0;
}


//初始化界面
void initialization()
{
printf("\n\n");
printf("\t*******************************************************************\n");
printf("\t|                                                                 |\n");
printf("\t|                                                                 |\n");
printf("\t|                          欢迎使用                         |\n");
printf("\t|                                                                 |\n");
printf("\t|                                                                 |\n");
printf("\t|                      小型超市管理系统              |\n");
printf("\t|                                                                 |\n");
printf("\t|                                                                 |\n");
printf("\t|                                                                 |\n");
printf("\t|                        祝您使用愉快                   |\n");
printf("\t|                                                                 |\n");
printf("\t|                                                                 |\n");
printf("\t|                                                                 |\n");
printf("\t*******************************************************************\n");


sale = (struct sale *)malloc(sizeof(struct sale));
good = (struct good *)malloc(sizeof(struct good));
sale->next = null;
good->next = null;
salereadfromfile();//读取销售记录
goodsreadfromfile();//读取商品记录


_sleep(2000);  //延迟
}


//用户主程序
void userwindows()
{
int choose = 0;
while (1)
{
usermenu();  //用户主菜单


scanf("%d", &choose);
if (choose == 1)
{
userscan();
}


else if (choose == 2)
{
usercart();  //开启购物车之旅
}


else if (choose ==close_passward)
{
saveandexit();
}
else if (choose == password)
break;
}
}


//用户主菜单
void usermenu()
{
system("cls");
printf("\n\n");
printf("\t*************************************************************\n");
printf("\t|                                                           |\n");
printf("\t|                                                           |\n");
printf("\t|                 相信美好的事情即将发生                    |\n");
printf("\t|                                                           |\n");
printf("\t|                                                           |\n");
printf("\t|                       请选择操作                          |\n");
printf("\t|                                                           |\n");
printf("\t|             【1】浏览商品   【2】购买商品                 |\n");
printf("\t|                                                           |\n");
printf("\t|                                                           |\n");
printf("\t*************************************************************\n");
}


//用户浏览
void userscan()
{
if (good->next == null)
{
printf("\n\n\t抱歉，商店商品已全售完，店主正在忙碌进货中...");
_sleep(2000);
}
else
{
system("cls");
struct good *goods_pointer = good;
while (goods_pointer->next != null)
{
goods_pointer = goods_pointer->next;
goodsshow(goods_pointer);
}


printf("\n\t是否购买商品？（按【y】确认）");
char flag;
fflush(stdin);
flag = getch();
if (flag == 'y' || flag == 'y')
{
usercart();//购物车
}
}
}


//商品信息显示
void goodsshow(struct good *goods)
{
printf("\n\n\t***************商品信息******************");
printf("\n\t商品编号...%30d\n", goods->id);
printf("\n\t-----------------------------------------");
printf("\n\t商品名称...%30s\n", goods->name);
printf("\n\t-----------------------------------------");
printf("\n\t商品数量...%30d\n", goods->num);
printf("\n\t-----------------------------------------");
printf("\n\t出售价格...%30.2f\n", goods->price2);
printf("\n\t-----------------------------------------");
printf("\n\t生产日期...%30.2f\n", goods->date);
printf("\n\t-----------------------------------------");
printf("\n\t保质期...%32d\n", goods->baozhiqi);
printf("\n\t-----------------------------------------\n\n");
}


//购物车
int usercart()
{
if (good->next == null)
{
printf("\n\n\t抱歉，商店商品已全售完，店主正在忙碌进货中...");
_sleep(2000);
return 0;
}


system("cls");
printf("\n\n\n\t即将进入选购界面，请稍等...");
_sleep(2000);


struct sale *shopping_cart;
//购物车
shopping_cart = (struct sale *)malloc(sizeof(struct sale));
shopping_cart->next = null;
//初始化购物车列表




int i = 0;
struct good *goods, *address[shoppingcartmax];
//存放商品地址;
for ( ; i < shoppingcartmax; i++)
{
goods = goodsfind();
//查找商品
if (goods == null)
{
printf("\n\n\n\t\t抱歉，没有您需要的商品！");
_sleep(2000);
continue;
} 
else if (goods == good)
//在选择商品时选择【结束操作】
{
system("cls");
if (shopping_cart->next == null)
{
printf("\n\n\n\t\t由于您购物车空空的，将结束本次购物！");
printf("\n\n\n\t购物系统正在关闭，请稍等...");
free(shopping_cart);
//销毁购物车
_sleep(4000);
break;
}
else
{
printf("\n\n\n\t您取消了本次选购，是否前往支付？");
printf("\n\n\t【y】前往支付 【任意键】放弃购物");
char choose1;
choose1 = getch();
if (choose1 == 'y' || choose1 == 'y')
{
free(goods);
userpay(shopping_cart, address);
//结账
}
else
{
printf("\n\n\n\t购物系统正在关闭，请稍等...");
free(shopping_cart);
//销毁购物车
_sleep(2000);
break;
}
}
}


system("cls");
goodsshow(goods);
//显示商品信息


struct sale *cart_pointer = shopping_cart;
int judge = 123;
//判断是否重复购买,初始化赋随机值
while (cart_pointer->next != null)
//查找购物车是否已存在该商品
{
cart_pointer = cart_pointer->next;


judge = strcmp(cart_pointer->name, goods->name);
if (judge == 0)
{
printf("\t【购物车已有%d件该商品！,若要继续购买，将自动为您合并！】\n", cart_pointer->num);
break;
}
}


struct sale *sale;
//可移动指针对销售进行操作
sale = (struct sale *)malloc(sizeof(struct sale));
printf("\n\n请输入要购买的数量：(输入【0】重新选择)\t");
scanf("%d", &sale->num);
if (sale->num == 0)  continue;


if (judge == 0)
//准备合并相同商品
{
sale->num = (cart_pointer->num) + (sale->num);
}


if ((sale->num) > (goods->num))
//判断是否超过最大商品数量
{
printf("\n\n\n\t【友情提示：很抱歉，该商品由于销售太火爆，目前只剩下%d件了】", goods->num);
printf("\n\n\t\t【a】继续，购买%d件  【b】重新选择  【任意键】结束购物\n", goods->num);
char choose;
fflush(stdin);
choose = getch();


if (choose == 'a' || choose == 'a')
{
sale->num = goods->num;
printf("\n\n\n\t【谢谢您的理解和支持！】");
}
else if (choose == 'b' || choose == 'b')   continue;
else break;
}


if (judge == 0)
//购物车存在商品时，合并商品
{
cart_pointer->num = sale->num;
printf("\n\n\t【由于购物车存在该商品,已自动为您合并！】");
}
else //购物车不存在商品时，添加到购物车
{
address[i] = goods;
// 记录商品地址
strcpy(sale->name, goods->name);
// 记录商品名称
sale->id = goods->id;
sale->price1 = goods->price1;
sale->price2 = goods->price2;
sale->next = null;


while (cart_pointer->next != null)
{
cart_pointer = cart_pointer->next;
}
cart_pointer->next = sale;//添加到购物列车中
printf("\n\n\t已成功添加商品到购物车！");
}


if (i == (shoppingcartmax-1))//购物车满时操作
{
printf("\n\n\t【购物车已达到最大容量，将自动为您跳往支付界面！】");
_sleep(2000);
userpay(shopping_cart, address);
//结账
break;
}


printf("\n\n\n\t\t【1】:前往支付 【2】:继续浏览 【3】:放弃购物\n");
char choice;
choice = getch();
if (choice == '1')
{
userpay(shopping_cart,address);
//结账
break;
}
else if (choice == '3')
break;
}
return 1;
}


//结账
void userpay(struct sale *shopping_cart, struct good *address[])
{
system("cls");
float money = 0;
struct sale *sale_pointer = shopping_cart;
printf("\n\n安全交易系统已打开！");
printf("\n\n订单开始处理...\n...\n\n订单审核通过...\n\n正在生成订单...\n\n订单生成完成！");


printf("\n\n\n\t*************************订单详情**************************");
printf("\n\n\t商品名称\t商品单价\t购买数量\t消费总价\n");
while (sale_pointer->next != null)
{
sale_pointer = sale_pointer->next;
printf("\n\t%s\t\t%.2f\t\t%d\t\t%.2f\t\t",sale_pointer->name,
sale_pointer->price2, sale_pointer->num, (sale_pointer->price2)*(sale_pointer->num));


money = money + (sale_pointer->price2)*(sale_pointer->num);
}
printf("\n\n\t***********************************************************");
printf("\n\t总共消费金额为：%.2f", money);


printf("\n\n\n\t确定完成交易？\t按【y】确认支付 【任意键】取消支付\n\t");
fflush(stdin);
char flag;
flag = getch();
if (flag == 'y' || flag == 'y')
{
char name[20];
printf("\n\n\t请输入您的名字：");
scanf("%s", name);
printf("\n\n系统正在完成交易，请稍等...");


int i;
struct good *goods_address;
//临时存放商品地址 
sale_pointer = shopping_cart;
for (i = 0; sale_pointer->next != null; i++)
{
sale_pointer = sale_pointer->next;
strcpy(sale_pointer->buyer, name);
//记录购买者名字
_tzset();
_strdate(sale_pointer->time);
//记录购买时间


goods_address = address[i];
goods_address->num = (goods_address->num) - (sale_pointer->num);
//更改商品数量
if (goods_address->num == 0)
{
deleteoperation(goods_address);//清除数量为0的商品记录
}
}
//增加商品销售记录
sale_pointer = sale;
while (sale_pointer->next != null)
//定位到销售列表末尾
{
sale_pointer = sale_pointer->next;
}
sale_pointer->next = shopping_cart->next;
printf("\n\n\n\t交易完成，谢谢惠顾！ o(∩_∩)o~\n\n");
printf("\n\n\t交易系统正在关闭，请稍后...");
_sleep(5000);
}
}


//管理员主程序
void administratorwindows()
{
int flag = 1;  //判断是否进入用户界面的标志
char choose;
while (flag)
{
administratormenu();
choose = getch();
system("cls");
switch (choose)
{
case '1':
{
goodsadd();  //新购商品入库
break;
}


case '2':
{
goodsdetail();
//商品信息详情
break;
}


case '3':
{
goodschange();
//商品信息更改
break;
}


case '4':
{
goodsdelete();
//商品信息删除
break;
}


case '5':
{
goodsbrowse();
//商品信息浏览
break;
}


case '6':
{
salemanage();  //商品销售管理
break;
}


case '7':
{
system("cls");
flag = 0;  //flag 设为0，准备进入用户界面
printf("\n\n\n\t即将进入用户界面，请稍等...");
_sleep(2000);
break;  //进入用户界面
}


case '0':
{
saveandexit();
//保存并退出
exit(0);
}
}
fflush(stdin);
}
}


//管理员主菜单
void administratormenu()
{
system("cls");
printf("\n\t|-----------------------------------------------------------------|");
printf("\n\t|                                                                 |");
printf("\n\t|                      【小型超市管理系统】                       |");
printf("\n\t|                                                                 |");
printf("\n\t|-----------------------------------------------------------------|");
printf("\n\t|                                                                 |");
printf("\n\t|     【1】∽∽∽∽∽∽∽【           新购商品入库         】     |");
printf("\n\t|                                                                 |");
printf("\n\t|     【2】∽∽∽∽∽∽∽【           商品信息详情         】     |");
printf("\n\t|                                                                 |");
printf("\n\t|     【3】∽∽∽∽∽∽∽【           商品信息更改         】     |");
printf("\n\t|                                                                 |");
printf("\n\t|     【4】∽∽∽∽∽∽∽【           商品信息删除         】     |");
printf("\n\t|                                                                 |");
printf("\n\t|     【5】∽∽∽∽∽∽∽【           商品信息浏览         】     |");
printf("\n\t|                                                                 |");
printf("\n\t|     【6】∽∽∽∽∽∽∽【           商品销售管理         】     |");
printf("\n\t|                                                                 |");
printf("\n\t|     【7】∽∽∽∽∽∽∽【           进入用户界面         】     |");
printf("\n\t|                                                                 |");
printf("\n\t|     【0】∽∽∽∽∽∽∽【           保存退出程序         】     |");
printf("\n\t|                                                                 |");
printf("\n\t|-----------------------------------------------------------------|");
printf("\n\n\t\t\t\t请输入您要选择的菜单....");
}


//新购商品入库
void goodsadd()
{
while (1)
{
system("cls");
printf("\n\n\t\t r:日用品 w:文化用品 s:食品 d:电子产品");
printf("\n\n请输入商品信息：");
struct good *goods,*exist;
//指针 *exist 判断是否已存在该商品
goods = (struct good *)malloc(sizeof(struct good));


printf("\n\n商品编号:");
scanf("%d", &goods->id);
exist = goodsidfind(goods->id);
//检查编号是否重复
if (exist != null)
{
printf("\n\n\t该商品信息已存在！请选择操作：\n\t【1】：重新输入\t【2】：前往编辑");
char choose1;
choose1 = getch();
if (choose1 == '2')
{
changeoperation(exist);
//更改操作
}
free(goods);
continue;
}


printf("商品名称:");
scanf("%s", &goods->name);
exist = goodsnamefind(goods->name);
//检查名称是否重复
if (exist != null)
{
printf("\n\n\t该商品信息已存在！请选择操作：\n\t【1】重新输入\t【2】前往编辑");
char choose2;
choose2 = getch();
if (choose2 == '2')
{
changeoperation(exist);
//更改操作
}
free(goods);
continue;
}


fflush(stdin);
printf("商品类型:");
scanf("%c", &goods->kind);
printf("商品数量:");
scanf("%d", &goods->num);
printf("进货价格:");
scanf("%f", &goods->price1);
printf("出售价格:");
scanf("%f", &goods->price2);
printf("生产日期:");
scanf("%f", &goods->date);
printf("保质期:");
scanf("%d", &goods->baozhiqi);


system("cls");
printf("\n\n\t************************************************************************");
printf("\n\n\t 编号\t 名称\t 类型\t 数量\t 进价\t 售价\t 生产日期\t 保质期 \n\n");
printf("\t %d\t %s\t %c\t %d\t %.2f\t %.2f\t %.2f\t\t %d \n",
goods->id, goods->name, goods->kind, goods->num, goods->price1, goods->price2, goods->date, goods->baozhiqi);
printf("\n\n\t************************************************************************");
printf("\n\n\t确定录入此商品信息？\t(按【y】确认)\n\n");


struct good *goods_pointer = good;
char check1;
fflush(stdin);
check1 = getch();
if (check1 == 'y' || check1 == 'y')
{
while (goods_pointer->next != null)
{
goods_pointer = goods_pointer->next;
//定位到商品列表末尾
}


goods->next = goods_pointer->next;
goods_pointer->next = goods;
}


printf("\n\n\t是否继续录入商品信息？\t(按【y】确认)");
char check2;
check2 = getch();
if (check2 != 'y' || check2 != 'y')
{
printf("\n\n\n\n\t【已结束商品信息录入，即将返回主程序...】");
_sleep(2000);
break;
}
}
}


//商品信息详情
void goodsdetail()
{
struct good *goods;
goods = goodsfind();
//查找是存在该商品

if (goods == null)
{
printf("\n\n\t【抱歉，不存在该商品！】");
_sleep(2000);
}
else if (goods == good)
{
printf("\n\n\n\t\t正在返回程序，请稍等...");
_sleep(2000);
}
else
{
system("cls");
printf("\n\n\t***********************************************************************");
printf("\n\n\t 编号\t 名称\t 类型\t 数量\t 进价\t 售价\t 生产日期\t 保质期 \n\n");
printf("\t %d\t %s\t %c\t %d\t %.2f\t %.2f\t %.2f\t\t %d \n",
goods->id, goods->name, goods->kind, goods->num, goods->price1, goods->price2, goods->date, goods->baozhiqi);
printf("\n\n\t***********************************************************************");
printf("\n\n\t按任意键继续...");
getch();
}
}


//商品信息查找选择
struct good *goodsfind()
{
if (good->next == null)
{
printf("\n\n\t\t抱歉，目前商店没有商品信息！");
_sleep(2000);
return good;
}
while (1)
{
system("cls");
printf("\n\n\n\n");
printf("\t|-----------------------------------------------------------|\n");
printf("\t|                                                           |\n");
printf("\t|                  【a】根据商品编号id选择                  |\n");
printf("\t|                                                           |\n");
printf("\t|                  【b】根据商品名称name选择                |\n");
printf("\t|                                                           |\n");
printf("\t|                  【c】结束操作                            |\n");
printf("\t|                                                           |\n");
printf("\t|-----------------------------------------------------------|\n");
printf("\t|                                                           |\n");
printf("\t|                    ∞请选择操作∞                         |\n");
printf("\t|                                                           |\n");
printf("\t|-----------------------------------------------------------|\n");


struct good *goods;
char choose;
fflush(stdin);
choose = getch();
if (choose == 'a' || choose == 'a')
{
printf("\n\t请输入商品编号：");
int goods_number;
scanf("%d", &goods_number);
goods = goodsidfind(goods_number);
return goods;
}


else if (choose == 'b' || choose == 'b')
{
printf("\n\t请输入商品名称：");
fflush(stdin);
char goods_name[20];//待输入名称
gets(goods_name);
goods = goodsnamefind(goods_name);
return goods;
}


else if (choose == 'c' || choose == 'c') return good;
}
}


//根据id查找
struct good *goodsidfind(int goods_number)
{
struct good *goods=good;
while (goods->next != null)
{
goods = goods->next;
if (goods->id == goods_number)
{
return goods;
}
}
return null;
}


//根据名称查找
struct good *goodsnamefind(char goods_name[])
{
struct good *goods=good;
while (goods->next != null)
{
goods = goods->next;
if (strcmp(goods->name, goods_name) == 0)
{
return goods;
}
}
return null;
}


//商品信息更改
void goodschange()
{
struct good *goods;
goods = goodsfind();
//查找是存在该商品


if (goods == null)
{
printf("\n\n\t【不存在该商品！】");
_sleep(2000);
}
else if (goods == good)
{
printf("\n\n\n\t\t正在返回程序，请稍等...");
_sleep(2000);
}
else
{
changeoperation(goods);
//更改操作
}
}


//更改操作
void changeoperation(struct good *goods)
{
int end = 0;
char choose;
while (1)
{
system("cls");
printf("\n\n\t***************************************************************************");
printf("\n\n\t编号\t 名称  \t 类型\t 数量\t 进价\t 售价\t 生产日期\t保质期 \n\n");
printf("\t %d\t %s\t  %c\t %d\t %.2f\t %.2f\t %.2f\t\t %d \n", goods->id, goods->name,
goods->kind, goods->num, goods->price1, goods->price2, goods->date, goods->baozhiqi);
printf("\n\n\t***************************************************************************");
printf("\n\n\t\t【r】:日用品 【w】:文化用品 【s】:食品 【d】:电子产品\n");
printf("\n\t【1】商品编号\t【2】商品名称\t【3】商品类型\t【4】商品数量");
printf("\n\t【5】进货价格\t【6】出售价格\t【7】生产日期\t【8】保质期\n\t【0】保存退出\n");
printf("\n\t请选择序号进行操作：\n");


choose = getch();
switch (choose)
{
case '1':
{
printf("\n\t请输入商品编号:");
scanf("%d", &goods->id);
break;
}


case '2':
{
printf("\n\t请输入商品名称:");
scanf("%s", &goods->name);
break;
}


case '3':
{
printf("\n\t请输入商品类型:");
fflush(stdin);
scanf("%c", &goods->kind);
break;
}


case '4':
{
printf("\n\t请输入商品数量:");
scanf("%d", &goods->num);
break;
}


case '5':
{
printf("\n\t请输入进货价格:");
scanf("%f", &goods->price1);
break;


}
case '6':
{
printf("\n\t请输入出售价格:");
scanf("%f", &goods->price2);
break;
}


case '7':
{
printf("\n\t请输入生产日期:");
scanf("%f", &goods->date);
break;
}


case '8':
{
printf("\n\t请输入保质期:");
scanf("%d", &goods->baozhiqi);
break;
}


case '0':
{
printf("\n\n\t正在保存，请稍等...");
_sleep(2000);
end = 1;
break;
}


}
if (end == 1)  break;
}
}


//商品信息删除
void goodsdelete()
{
struct good *goods;
goods = goodsfind();
//查找是存在该商品
if (goods == null)
{
printf("\n\n\t【抱歉，不存在该商品！】");
_sleep(2000);
}
else if (goods == good)
{
printf("\n\n\n\t\t正在返回程序，请稍等...");
_sleep(2000);
}
else
{
printf("\n\n\t************************************************************************");
printf("\n\n\t 编号\t 名称\t 类型\t 数量\t 进价\t 售价\t 生产日期\t 保质期 \n\n");
printf("\t %d\t %s\t %c\t %d\t %.2f\t %.2f\t %.2f\t\t %d \n",
goods->id, goods->name, goods->kind, goods->num, goods->price1, goods->price2, goods->date, goods->baozhiqi);
printf("\n\n\t************************************************************************");


printf("\n警告：是否确认删除？！(输入【y】确认)");
char choose;
fflush(stdin);
choose = getch();
if (choose == 'y' || choose == 'y')
{
deleteoperation(goods);
//删除操作
}
}
}


//删除操作
void deleteoperation(struct good *goods)
{
struct good *goods_pointer = good;
while (goods_pointer->next != goods)
{
goods_pointer = goods_pointer->next;
}
goods_pointer->next = goods->next;
free(goods);
printf("\n\n\t操作成功！");
_sleep(300);
}


//商品信息浏览
void goodsbrowse()
{
system("cls");
if (good->next == null)
{
printf("\n\n\t\t抱歉，目前商店没有商品信息！");
_sleep(2000);
}
else
{
printf("\t\t请选择浏览方式：\n\n\t【1】全部浏览\t【2】按类型浏览");
char choose;
while (1)
{
choose = getch();
if (choose == '1')
{
allbrowse();
break;
}
else if (choose=='2')
{
browsebytype();
break;
}
}
printf("\n\n\n\t按任意键继续...");
getch();
}
}


//浏览所有商品
void allbrowse()
{
system("cls");
struct good *goods_pointer = good;


printf("\n\n\t*********************************************************************************");
printf("\n\n\t 编号\t 名称\t\t 类型\t 数量\t 进价\t 售价\t 生产日期\t保质期 \n\n");
while (goods_pointer->next != null)
{
goods_pointer = goods_pointer->next;
printf("\t %d\t %s\t\t %c\t %d\t %.2f\t %.2f\t %.2f\t\t%d \n", goods_pointer->id,
goods_pointer->name, goods_pointer->kind, goods_pointer->num, goods_pointer->price1,
goods_pointer->price2, goods_pointer->date, goods_pointer->baozhiqi);
}
printf("\n\n\t*********************************************************************************");
}


//按类型浏览商品
void browsebytype()
{
system("cls");
printf("\n\n\t\t 【r】:日用品 【w】:文化用品 【s】:食品 【d】:电子产品");
printf("\n\n\n请选择要浏览的商品类型：");
char type;
type = getch();


system("cls");
struct good *goods_pointer = good;
printf("\n\n\t*********************************************************************");
printf("\n\n\t 编号\t 名称\t 类型\t 数量\t 进价\t 售价\t 生产日期\t 保质期 \n");
while (goods_pointer->next != null)
{
goods_pointer = goods_pointer->next;
if (goods_pointer->kind == type)
printf("\n\t %d\t %s\t %c\t %d\t %.2f\t %.2f\t %.2f\t\t %d",
goods_pointer->id, goods_pointer->name, goods_pointer->kind, goods_pointer->num,
goods_pointer->price1, goods_pointer->price2, goods_pointer->date, goods_pointer->baozhiqi);
}
printf("\n\n\t*********************************************************************");
}


//商品销售管理
void salemanage()
{
system("cls");
printf("\n\n\t\t销售情况查看及利润统计");
printf("\n\n\t【r】:日用品 【w】:文化用品 【s】:食品 【d】:电子产品");
printf("\n\n\t***********************************************************");
if (sale->next == null)
{
printf("\n\n目前暂无销售记录！");
_sleep(2000);
}


else
{
printf("\n\n\t编号\t名称\t进价\t售价\t数量\t名字\t时间\n\n");
int number = 0;//商品数量
float profit = 0;//商品利润
struct sale *sale_pointer = sale;
while (sale_pointer->next != null)
{
sale_pointer = sale_pointer->next;
printf("\t %d\t %s\t %.2f\t %.2f\t %d\t %s\t %s\n",sale_pointer->id, sale_pointer->name,
sale_pointer->price1, sale_pointer->price2, sale_pointer->num, sale_pointer->buyer, sale_pointer->time);


profit = profit + ((sale_pointer->price2) - (sale_pointer->price1))*(sale_pointer->num);
number = number + (sale_pointer->num);
}
printf("\n\t***********************************************************");
printf("\n\n\t共销售商品%d件，纯利润为%.2f", number, profit);


printf("\n\n\n\t按任意键继续...");
getch();
}
}


//保存并退出
void saveandexit()
{
salesavetofile();//保存销售信息
goodssavetofile();//保存商品信息
system("cls");
printf("\n\n\n\n\n\n");


printf("\n\t\t
＃〓§〓〓〓〓〓§〓〓〓〓〓〓§〓〓〓〓〓§〓＃ ");
printf("\n\t\t
        ↓　　　　　↓　　　　　　↓　　　　　↓ ");
printf("\n\t\t
   ☆★☆　　　☆★☆　　　　☆★☆　　　☆★☆ ");
printf("\n\t\t     ☆　谢　☆　☆　谢　☆　　☆　使　☆　☆　用　☆
");
printf("\n\t\t
 ☆★☆　　　☆★☆　　　　☆★☆　　　☆★☆ ");
printf("\n\t\t
      ↓　　　　　↓　　　　　　↓　　　　　↓ ");
printf("\n\t\t
     ※　　　　　※　　　　　　※　　　　　※ ");


_sleep(3000);
exit(0);
}


//保存商品信息
int goodssavetofile()
{
file *fp;
char buff[512];
if ((fp = fopen("goods_path", "wb")) == null)
{
sprintf(buff, "can not open file:%s to create", "goods_path");
_sleep(2000);
return 0;
}


struct good *goods_pointer = good;
//定位到链表头部
while (goods_pointer->next != null)
{
goods_pointer = goods_pointer->next;
fwrite(goods_pointer, sizeof(struct good), 1, fp);//一个个的保存到文件中去
}
fclose(fp);
return 1;
}


//保存销售信息
int salesavetofile()
{
file *fp;
char buff[512];
if ((fp = fopen("sale_path", "wb")) == null)
{
sprintf(buff, "can not open file:%s to create", "sale_path");
_sleep(2000);
return 0;
}
struct sale *sale_pointer = sale;
//定位到链表头部
while (sale_pointer->next != null)
{
sale_pointer = sale_pointer->next;
fwrite(sale_pointer, sizeof(struct sale), 1, fp);//一个个的保存到文件中去
}
fclose(fp);
return 1;
}


//读取商品记录
int goodsreadfromfile()
{
file *fp;
char buff[512];
if ((fp = fopen("goods_path", "rb")) == null)
{
sprintf(buff, "can not open file:%s to read", "goods_path");
return 1;
}


int number;
fseek(fp, 0, 2);
//定位到文件末尾
number = ftell(fp) / sizeof(struct good);
//求出总结点数
fseek(fp, 0, 0);
//定位到文件的开始处


int i;
struct good *goods;
struct good *goods_pointer = good;
for (i = 0; i < number; i++)
{
goods = (struct good *)malloc(sizeof(struct good));
fread(goods, sizeof(struct good), 1, fp);
goods->next = null;


while (goods_pointer->next != null)
//定位到商品列表末尾
{
goods_pointer = goods_pointer->next;
}
goods_pointer->next = goods;//插入到链表当中
}
fclose(fp);//关闭文件
return 0;
}


//读取销售记录
int salereadfromfile()
{
file *fp;
char buff[512];
if ((fp = fopen("sale_path", "rb")) == null)
{
sprintf(buff, "can not open file:%s to read", "sale_path");
return 1;
}


int number;
fseek(fp, 0, 2);
//定位到文件末尾
number = ftell(fp) / sizeof(struct sale);
//求出总结点数
fseek(fp, 0, 0);
//定位到文件的开始处


int i;
struct sale *sale;
struct sale *sale_pointer = sale;
for (i = 0; i < number; i++)
{
sale = (struct sale *)malloc(sizeof(struct sale));
fread(sale, sizeof(struct sale), 1, fp);
sale->next = null;


while (sale_pointer->next != null)
//定位到销售列表末尾
{
sale_pointer = sale_pointer->next;
}
sale_pointer->next = sale;
//插入到链表当中
}
fclose(fp);  //关闭文件
return 0;
}