public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
int time;
int mealnum;
int comeback; //傳回按鈕
//菜單
String [] mealName = {"紅燒茄子","紅燒排骨","魚香肉絲"};
double [] mealPrice = {24.0,36.0,32.0};
//餐袋資訊
String [] listName = new String[10];//姓名
String [] listMeal = new String[10];//菜品
int [] listNum = new int[10];//數量
int [] listTime = new int[10];//時間
String [] listAddress = new String[10];//位址
double [] listMoney = new double[10];//總金額
String [] listFettle = new String[10];//訂單狀态
int [] likeNum = new int[3];//點贊數
int l = -1;
do {
//初始化菜單
System.out.println("歡迎使用外賣訂餐系統");
System.out.println("*******************");
System.out.println("1、我要訂餐");
System.out.println("2、檢視餐袋");
System.out.println("3、簽收訂單");
System.out.println("4、删除訂單");
System.out.println("5、我要點贊");
System.out.println("6、退出系統");
System.out.println("*******************");
System.out.println("請選擇");
int choose = sc.nextInt();
int i;
switch (choose){
//我要訂餐
case 1:
l++;//l初始值為-1，先自增再指派
System.out.println("***我要訂餐***");
System.out.println("請輸入訂餐人姓名：");
listName[l] = sc.next();
System.out.println("序号\t菜名\t單價");
System.out.println("1\t紅燒茄子\t24.0元");
System.out.println("2\t紅燒排骨\t36.0元");
System.out.println("3\t魚香肉絲\t32.0元");
System.out.println("請選擇你要點的菜品編号：");
i = sc.nextInt();
//對i進行判斷
if(i>=1&&i<=3){
System.out.println("請選擇你需要的份數：");
listNum[l] = sc.nextInt();
System.out.println("請輸入送餐時間（送餐時間是10點至20點間整點送餐:）");
listTime[l] = sc.nextInt();
//對送餐時間進行判斷
if(listTime[l]>=10&&listTime[l]<=20){
System.out.println("請輸入送餐位址：");
listAddress[l] = sc.next();
System.out.println("訂餐成功");
System.out.println("您訂的是" + mealName[i-1] + listNum[l] + "份");
System.out.println("送餐時間:" + listTime[l] + "點");
System.out.println("餐費：" + mealPrice[i-1] * listNum[l] + "元，送餐費" + 3*listNum[l]+",總計："+(mealPrice[i-1] * listNum[l]+3*listNum[l]) );
listMeal[l] = mealName[i-1];
listMoney[l] = mealPrice[i-1] * listNum[l]+3*listNum[l];
listFettle[l] ="已預訂";
}else{
System.out.println("不在配送時間哦");
//删除錯誤的訂單
listName[l] = null;
listNum[l] = 0;
listTime[l] = 0;
l--;
}
}else{
System.out.println("請輸入正确的編号");
//删除錯誤的訂單
listName[l] = null;
l--;
}
System.out.println("輸入0傳回");
comeback = sc.nextInt();
break;
//檢視餐袋
case 2:
System.out.println("***檢視餐袋***");
System.out.println("序号\t訂餐人\t餐品資訊\t份數\t送餐日期\t送餐位址\t總金額\t訂單狀态");
for (int k=0;k<=l;k++){
System.out.println((k+1)+"\t\t" +listName[k]+"\t\t" +listMeal[k]+"\t\t"+listNum[k]+"\t\t"+listTime[k]+"\t\t"+listAddress[k]+"\t\t"+listMoney[k]+"\t\t"+listFettle[k]);
}
System.out.println("輸入0傳回");
comeback = sc.nextInt();
break;
//簽收訂單
case 3:
System.out.println("***簽收訂單***");
System.out.println("請選擇要簽收的訂單序号：");
int j = sc.nextInt();
if(listFettle[j-1].equals("已預訂")){
System.out.println("訂單簽收成功");
listFettle[j-1] = "已簽收";
}else {
System.out.println("該訂單已經被簽收");
}
System.out.println("輸入0傳回");
comeback = sc.nextInt();
break;
//删除訂單
case 4:
System.out.println("***删除訂單***");
System.out.println("請輸入要删除的訂單序号：");
int k =sc.nextInt();
if(!listName[k-1].equals(null)){
for(int m=k-1;m<=l;m++){
listName[m] = listName[m+1];
listMeal[m] = listMeal[m+1];
listNum[m] = listNum[m+1];
listTime[m] = listTime[m+1];
listAddress[m] = listAddress[m+1];
listMoney[m] = listMoney[m+1];
listFettle[m] = listFettle[m+1];
}
listName[l] = null;
listMeal[l] = null;
listNum[l] = 0;
listTime[l] = 0;
listAddress[l] = null;
listMoney[l] =0.0;
listFettle[l] = null;
System.out.println("删除訂單成功！");
}else{
System.out.println("該訂單不存在");
}
System.out.println("輸入0傳回");
comeback = sc.nextInt();
break;
//點贊系統
case 5:
System.out.println("***我要點贊***");
System.out.println("序号\t菜名\t單價");
System.out.println("1\t紅燒茄子\t24.0元"+likeNum[0]+"贊");
System.out.println("2\t紅燒排骨\t36.0元"+likeNum[1]+"贊");
System.out.println("3\t魚香肉絲\t32.0元"+likeNum[2]+"贊");
System.out.println("請選擇你要點贊的菜品序号：");
int m = sc.nextInt();
if(1<=m&&m<=3){
likeNum[m-1]++;
System.out.println("點贊成功");
}else{
System.out.println("點贊失敗，請輸入正确的菜品序号");
}
System.out.println("輸入0傳回");
comeback = sc.nextInt();
break;
//退出
case 6:
System.out.println("謝謝使用，歡迎下次光臨!");
comeback =1;
break;
}
}while (comeback == 0);
}
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