订餐管理系统

#include
#include
#include
#include
#include
using namespace std;

char ADMIN_PASSWD[20]="123"; 	//管理员初始密码
#define USER_MAX_SIZE 100   //控制最大值
#define GOODS_MAX_SIZE 100	//商品最大值
#define Evaluate_MAX_SIZE 100	//商品最大值

typedef struct 
{
	char id[20];//评价人
	char str[50];//内容
	float score;//评分
}Evaluate;

Evaluate eva[Evaluate_MAX_SIZE];
int eva_num=0;//记录评价数量

typedef struct 
{
	char id[20];//账号
	char tel[20];//电话
	char passwd[20];//密码
	char name[20];//姓名
}User;//用户信息

User user[USER_MAX_SIZE];
int user_num=0;//记录用户数量
char now_user[20];//当前用户ID

typedef struct
{
	int id;//编号
	char name[30];//名称
	float price;//价格
}Goods;

Goods goods[GOODS_MAX_SIZE]=
{
	1,"大米饭",1.0,
	2,"冷面",3.0,
	3,"兰州拉面",5,
	4,"刀削面",5,
	5,"菜粥",0.5,
	6,"南瓜粥",1,
	7,"糯米粥",1,
	8,"黑米粥",1,
	9,"燕麦粥",1,
	10,"红烧肉",3,
	11,"红烧鱼",5,
	12,"北京烤鸭",10,
	13,"啤酒鸭",6,
	14,"猪肚",8,
	15,"牛肉",15,
	16,"青菜",0.8,
	17,"白菜",1,
	18,"韭菜",1,
	19,"常豆",1.5,
	20,"扁豆",1.5,
	21,"豌豆",1.6,
	22,"丝瓜",1,
	23,"黄瓜",1.5,
	24,"排骨汤",5,
	25,"鲫鱼汤",6,
	26,"番茄蛋汤",2,
	27,"糯米丸子汤",3,
	28,"可乐",2,
	29,"雪碧",3.5,
	30,"果粒橙",3.5,
	31,"农夫果园",4,
	32,"农夫山泉",2,
	33,"白开水",0
};
int goods_num=33;//记录商品数量



/*进入系统后  登录选项菜单*/
int Login_Menu()
{
	int chioce;
	system("cls");

	cout<<"1:用户登录"<>chioce;

	while(chioce<0||chioce>3)
	{
		cout<<"输入范围错误,重新输入"<>chioce;
	}

	return chioce;
}




/*打印评价列表*/
void Print_Eva()
{
	int i;
	system("cls");

	printf("%-20s%-50s%-5s","评价人","评价","评分");
	cout<goods[j].id)
			{
				temp=goods[i];
				goods[i]=goods[j];
				goods[j]=temp;
			}
		}
	}
}




/*加载评价信息*/
void Load_Eva_File()
{
	int i=0;
	ifstream filein("eva.txt",ios::binary);
	while(filein)
	{
		filein.read((char*)&eva[i],sizeof(Evaluate));
		i++;
	}
	if(i>=1)
	{
		eva_num=i-1;
	}
	else
	{
		eva_num=0;
	}
}


/*保存评价信息*/
void Save_Eva_File()
{
	ofstream fileout("eva.txt",ios::binary);
	if(!fileout)
	{
		cout<<"文件不能被打开!"<=1)
	{
		goods_num=i;
	}
	else
	{
		goods_num=0;
	}
}

/*保存商品信息*/
void Save_Goods_File()
{
	ofstream fileout("goods.txt",ios::binary);
	if(!fileout)
	{
		cout<<"文件不能被打开!"<=1)
	{
		user_num=i-1;
	}
	else
	{
		user_num=0;
	}
}



/*加载管理员密码*/
void Load_Admin_file()
{
	ifstream filein("admin.txt",ios::binary);

	if(filein)
	{
		filein.read(ADMIN_PASSWD,sizeof(char)*20);
	}

	filein.close();
}



/*保存管理员密码*/
void Save_Admin_File()
{
	ofstream fileout("admin.txt",ios::binary);

	if(!fileout)
	{
		cout<<"文件不能被打开!"<>flag;
	
	if('Y'==flag||'y'==flag)
	{
		for(i=0;i>id;

	for(i=0;i>goods[goods_num].id;
	
	for(i=0;i>goods[goods_num].name;

	cout<<"请输入新商品价格"<>goods[goods_num].price;

	goods_num++;

	cout<<"添加商品成功!"<>id;
	
	for(i=0;i>chioce;

		while(chioce<0||chioce>7)
		{
			cout<<"输入范围错误，重新输入"<>chioce;
		}

		switch(chioce)
		{

		case 1:
			Add_Goods();
			Save_Goods_File();
			break;

		case 2:
			Del_Goods();
			Save_Goods_File();
			break;

		case 3:
			Print_All_User_Info();
			break;

		case 4:
			Delete_User();
			Save_User_File();
			break;

		case 5:
			Modify_Admin_Passwd();
			Save_Admin_File();
			break;

		case 6:
			Sort_Goods_Id();
			Print_Goods();
			break;

		case 7:
			Print_Eva();
			break;

		}

	}while(chioce);
}



/*对商品按价格升序排序*/
void Sort_Goods_Price_Low_To_High()
{
	int i,j;
	Goods temp;
	for(i=0;igoods[j].price)
			{
				temp=goods[i];
				goods[i]=goods[j];
				goods[j]=temp;
			}
		}
	}
}



/*对商品按价格降序排序*/
void Sort_Goods_Price_High_To_Low()
{
	int i,j;
	Goods temp;
	for(i=0;i>temp;


	if(temp=='Y'||temp=='y')
	{
		fflush(stdin);
		cout<<"请输入新密码:"<>id;

	for(i=0;i<*num;i++)
	{
		if(id==have_buy[i].id)
		{
			cout<<"已购买该商品"<>temp;

	if('Y'==temp||'y'==temp)
	{
		have_buy[*num]=goods[i];
		(*num)++;
		cout<<"购买成功!"<>eva[eva_num].score;

	while(eva[eva_num].score<0||eva[eva_num].score>5)
	{
		cout<<"评分只能在0-5,请重新输入"<>eva[eva_num].score;
	}

	cout<<"是否确认发布评价？Y/N"<>temp;

	if('Y'==temp||'y'==temp)
	{
		cout<<"发布成功!"<>chioce;

		while(chioce<0||chioce>9)
		{
			cout<<"输入范围错误，重新输入"<>chioce;
		}

		switch(chioce)
		{

		case 1:
			Sort_Goods_Id();
			Print_Goods();
			break;

		case 2:
			Sort_Goods_Price_Low_To_High();
			Print_Goods();
			break;

		case 3:
			Sort_Goods_Price_High_To_Low();
			Print_Goods();
			break;

		case 4:
			Buy_Goods(have_buy,&buy_num);
			break;

		case 5:
			Printf_Have_Buy_Goods(have_buy,&buy_num);
			break;

		case 6:
			Print_Own_Info();
			break;

		case 7:
			Modify_Passwd();
			Save_User_File();
			break;

		case 8:
			Eva_Goods();
			Save_Eva_File();
			break;

		case 9:
			Print_Eva();
			break;
		}

	}while(chioce);
}




/*跳转到登录选项*/
void Goto_Login_Chioce(int chioce)
{
	switch(chioce)
	{

	case 0:
		exit(0);
		break;
	case 1:
		if(User_Login())
		{
			User_Menu();
		}
		break;

	case 2:
		User_Reg();
		break;

	case 3:
		if(Admin_Login())
		{
			Admin_Menu();
		}
		else
		{
			cout<<"密码错误"<