public class mainSystem {
public static void main(String[] args) {
// 订餐系统
// 1.数据初始化,使用数组来存储菜品信息和订单信息
// 菜品信息包括菜品名称/菜品单价/点赞数量
String[] dishNames = { "红烧带鱼", "鱼香肉丝", "时令鲜蔬" };// 菜品名称
double[] prices = { 38, 20, 10 };// 菜品单价
int[] praiseNums = new int[3];// 点赞数
// 订单信息包括订餐人/送餐时间/送餐地点/菜品信息/订单状态/总金额
String[] names = new String[4];// 订餐人
int[] times = new int[4];// 送餐时间
String[] addresses = new String[4];// 送餐地点
String[] dishMegs = new String[4];// 菜品信息
int[] states = new int[4];// 订单状态
double[] sumPrices = new double[4];// 总金额
Scanner sc = new Scanner(System.in);
// 判断是否退出系统的开关
boolean unexit = true;
do {
System.out.println("欢迎使用"吃货联盟订餐系统"");
System.out.println("**************************");
System.out.println("1、我要订餐");
System.out.println("2、查看餐袋");
System.out.println("3、签收订单");
System.out.println("4、删除订单");
System.out.println("5、我要点赞");
System.out.println("6、退出系统");
System.out.println("**************************");
System.out.print("请选择: ");
//必须放在这个位置,已对应下一句
sc = new Scanner(System.in);
if(sc.hasNextInt()!=true) {
System.out.println("输入非法字符,请重新选择!");
continue;
}
int choice = sc.nextInt();
switch (choice) {
case 1: // 我要订餐
System.out.println("***我要订餐***");
// 判断餐袋是否已满的开关
boolean full = true;
for (int i = 0; i < names.length; i++) {
// 找到餐袋未满的位置,进行点餐
if (names[i] == null) {
full = false;
System.out.print("请输入订餐人姓名: ");
String name = sc.next();
// 打印菜单
System.out.println("序号t菜名t单价t点赞数");
for (int j = 0; j < dishNames.length; j++) {
System.out.println(j + 1 + "t" + dishNames[j] + "t" + prices[j] + "元t"
+ (praiseNums[j] > 0 ? praiseNums[j] + "赞" : "0"));
}
System.out.print("请选择你要的菜单编号: ");
int choooseDish = sc.nextInt();
System.out.print("请选择您需要的份数: ");
int num = sc.nextInt();
double sumPrice = prices[choooseDish - 1] * num;
// 送餐费
double fee = sumPrice >= 50 ? 0 : 5;
System.out.print("请输入送餐时间(送餐时间是10点至20点间整点送) : ");
int time = sc.nextInt();
while (time < 10 || time > 20) {
System.out.println("你输入的有误,请输入10点至20点的整数!");
time = sc.nextInt();
}
System.out.print("请输入送餐地址: ");
String address = sc.next();
System.out.println("订餐成功!");
names[i] = name;
times[i] = time;
addresses[i] = address;
dishMegs[i] = dishNames[choooseDish - 1] + num + "份";
sumPrices[i] = sumPrice + fee;
System.out.println("您订的是: " + dishMegs[i]);
System.out.println("送餐时间: " + times[i] + "点");
System.out.println("餐费: " + sumPrice + "元, 送餐费" + fee + "元, 总计: " + sumPrices[i] + "元");
break;
}
}
if (full) {
System.out.println("对不起,您的餐袋已满!");
}
break;
case 2:// 查看餐袋
System.out.println("***查看餐袋***");
System.out.println("序号t订餐人t餐品信息tt送餐时间t送餐地址tt总金额t订单状态");
for (int i = 0; i < names.length; i++) {
if (names[i] != null) {
String state = states[i] == 0 ? "已预订" : "已完成";
System.out.println(i + 1 + "t" + names[i] + "t" + dishMegs[i] + "t" + times[i] + "点t"
+ addresses[i] + "tt" + sumPrices[i] + "t" + state);
}
}
break;
case 3:// 签收订单
System.out.println("***签收订单***");
System.out.print("请选择要签收的订单序号: ");
int signNum = sc.nextInt();
// 判断订单是否存在
boolean check = true;
for (int i = 0; i < names.length; i++) {
if (names[i] != null && states[i] == 0 && signNum == i + 1) {
states[i] = 1;
System.out.println("订单签收成功!");
check = false;
break;
} else if (names[i] != null && states[i] == 1 && signNum == i + 1) {
System.out.println("订单已签收,不能重复签收!");
check = false;
break;
}
}
if (check) {
System.out.println("您选择的订单不存在!");
}
break;
case 4:
System.out.println("***删除订单***");
System.out.print("请选择您要删除的订单序号: ");
int delNum = sc.nextInt();
boolean check2 = true;
for (int i = 0; i < names.length; i++) {
if (names[i] != null && states[i] == 1 && delNum == i + 1) {
check2 = false;
for (int j = delNum-1; j < sumPrices.length-1; j++) {
names[j] = names[j + 1];
times[j] = times[j + 1];
addresses[j] = addresses[j + 1];
dishMegs[j] = dishMegs[j + 1];
states[j] = states[j + 1];
sumPrices[j] = sumPrices[j + 1];
}
// 最后的位置清空
names[names.length - 1] = null;
times[times.length - 1] = 0;
addresses[addresses.length - 1] = null;
dishMegs[dishMegs.length - 1] = null;
states[states.length - 1] = 0;
sumPrices[sumPrices.length - 1] = 0;
System.out.println("订单删除成功!");
break;
} else if (names[i] != null && states[i] == 0 && delNum == i + 1) {
check2 = false;
System.out.println("您选的订单未签收,不能删除");
break;
}
}
if (check2) {
System.out.println("你要删除的订单不存在!");
}
break;
case 5:
System.out.println("***我要点赞***");
System.out.println("序号t菜名t单价t");
for (int j = 0; j < dishNames.length; j++) {
System.out.println(j + 1 + "t" + dishNames[j] + "t" + prices[j] + "t"
+ (praiseNums[j] > 0 ? praiseNums[j] + "赞" : ""));
}
System.out.print("请选择您要点赞的菜品序号: ");
int praiseNum = sc.nextInt();
praiseNums[praiseNum - 1]++;
System.out.println("点赞成功!");
break;
case 6:
unexit = false;
break;
}
if (unexit) {
System.out.print("输入0返回:");
int num = sc.nextInt();
if (num != 0) {
break;
}
}
} while (unexit);
sc.close();
System.out.println("谢谢使用,欢迎下次光临!");
}
}
