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java Q:租车计算器|使用sentinel值循环

我很困惑,如果我遵循这一权利,是一种寻求安慰和一些帮助。所以我的主要问题是我是否遵循我的指导老师的问题是:当他说使用sentinel值循环构建它时

第二,我怎样才能把总数四舍五入到只有两位小数

如果这对我的作业有帮助的话:

说明:使用sentinel值循环

向每个用户询问:

车辆类型(可能使用字符串以外的其他内容,例如:1表示经济型,2表示轿车等) 租用天数 计算(每个客户的)成本:

租金, 税, 应付总额。 有三种不同的租金选择,价格不同:经济型31.76英镑,轿车40.32英镑,SUV 47.56英镑。[注:仅考虑全天单位(无小时费率)]

销售税=总额的6%

使用以下内容创建摘要数据:

顾客人数 收集的总金额。 此外,还包括IPO、算法和桌面检查值(设计文档)

{我的设计与进展}

包装业

导入java。util.*; 导入java。数学

公共课{

int count = 0;
static int days;
static double DailyFee, NontaxTotal, CarType, Total;



public static void main(String[] args) {

    Scanner keyboard = new Scanner(System.in);

    System.out.print("What vehical would you like to rent?\n");
    System.out.println("Enter 1 for an economy car\n");
    System.out.println("Enter 2 for a sedan car\n");
    System.out.println("Enter 3 for an SUV");
    CarType = keyboard.nextInt();
    if (CarType == 1)
          DailyFee=31.76;
        else if(CarType == 2)
          DailyFee=40.32;
        else if(CarType == 3)
          DailyFee=43.50;

    System.out.print("Please enter the number of days rented. (Example; 3) : ");
    days = keyboard.nextInt();

    NontaxTotal = (DailyFee * days);
    Total = (NontaxTotal * 1.06);







    System.out.printf("The total amount due is $" + Total);

}

}


共 (1) 个答案

  1. # 1 楼答案

    布兰登,没有哨兵回路。在我看来,这是你想要的节目

    import java.util.*;
    
    public class Stack3{
    public static void main(String []args){
        int count=0;
        int days;
        double DailyFee=0, NontaxTotal, CarType, Total,FullTotal=0;
        Scanner in=new Scanner(System.in);
        System.out.println("If there are any customer press 1 else press 0");
        int cus=in.nextInt();
        // this is sentinel loop
        while(cus!=0){
            count++;
            System.out.print("What vehical would you like to rent?\n");
            System.out.println("Enter 1 for an economy car\n");
            System.out.println("Enter 2 for a sedan car\n");
            System.out.println("Enter 3 for an SUV");
            CarType = in.nextInt();
            if (CarType == 1)
                  DailyFee=31.76;
            else if(CarType == 2)
                  DailyFee=40.32;
            else if(CarType == 3)
                  DailyFee=43.50;
    
            System.out.print("Please enter the number of days rented. (Example; 3) : ");
            days = in.nextInt();
            double x=days;
            NontaxTotal = (DailyFee * x);
            Total = (NontaxTotal * 1.06);
            FullTotal+=Total;
            //included 2 decimals only
            System.out.printf("The total amount due is $ %.2f \n",Total);
    
            System.out.println("If there are any customer press 1 else press 0");
            cus=in.nextInt();
        }
        System.out.println("Count of customers :- "+count);
        System.out.printf("Total of the Day :- %.2f",FullTotal);
    }
    }