这是管理5位客户的订单并打印账单的代码

Question

这是餐厅计费系统。要求用户输入表号，菜盘号和数量。每次用户添加菜品编号和数量时，我需要打印“您是否要添加更多？”。现在，一旦用户输入y，它就会提示您添加两次盘号和数量。

    int dish,qun,sum=0,tnum;
        char ch='y';
        int num=0;
        String menuItem[][]=
        {
            {"Banana","50"},
            {"Rajma", "60"},
            {"Momo","100"},
            {"Rajma", "60"},
            {"Rajma", "60"},
            {"Rajma", "60"},
            {"Rajma", "60"},
            {"Rajma", "60"},
            {"Rajma", "60"},
            {"Rajma", "60"}
        };
        System.out.println("+++Menu Item+++");
        for(int i = 0; i< 10; i++)
        {
            System.out.print(i+1+". ");
            for(int j= 0; j<2;j++)
            {
                System.out.print(menuItem[i][j]);
                System.out.print(" ");
            }
            System.out.println("");
        }
        Scanner scan = new Scanner(System.in);

        // System.out.println(menuItem[2][1]);
        for(int x=0;x<5;x++)
        {
            System.out.println("Enter the Table no:");
            tnum=scan.nextInt();
            while(ch=='y')
            {
                for(int y=0; y<=num; y++)
                {
                    System.out.println("Enter the dish number:");
                    dish=scan.nextInt();
                    System.out.println("Enter the quantity:");
                    qun=scan.nextInt();
                    String nu=menuItem[dish-1][1];
                    sum = Integer.parseInt(nu)*qun+sum;

                }
                System.out.println("Do you want to add dish? Enter 'y' or 'n'.");
                ch=scan.next().charAt(0);
                if(ch=='y')
                {
                    num=num+1;
                }
            }

            tableDish[0][0]=tnum;
            tableDish[0][1]=sum;
        }
        System.out.println("Sum:"+sum);
        for(int i=0;i<1;i++)
        {
            for(int j=0;j<2;j++)
            {
                System.out.println("value:"+tableDish[i][j]);
            }
        }

    }
}