如何增加集成商的价值？-解网

问：

对于爪哇的学校作业，我们假装在水疗接待处编写代码，客户应该添加他们选择的治疗方法，并且应该将其添加到总成本中。我们得到了一个代码基础（我已经编写了 switch 语句）。在计算成本时，我们应该使用代码中声明的文字。我无法弄清楚如何将治疗的价值添加到总成本中（请参阅粗体的**部分）。我一直在试图找到一种方法来增加成本的价值，但我似乎无法弄清楚......

到目前为止，代码如下：

import java.util.Scanner;
public class SpaReception{
  public static void main(String[] args) {
    double cost = 0;
    int treatment = 0;

    final double faceMask = 600.00;
    final double footMassage = 300.00;
    final double fullBodyMassage = 1500.00;

    Scanner input = new Scanner(System.in);  //create scanner for input
    System.out.println("Type in which treatment you've gotten ");
    System.out.println("Face mask: 1");
    System.out.println("Foot massage: 2");
    System.out.println("Full body massage: 3");
    System.out.println("Cancel: -1");
    treatment = input.nextInt();

    switch (treatments) {
      case 1: 
        ***add the value of faceMask to cost***
        break;
      case 2:
       ***add the value of footMassage to cost***
        break;
      case 3:
        ***add the value of fullBodyMassage to cost***
        break;
      case 4:
        break;
    }

    System.out.println("The cost is: "+cost);
  }
}

由于我无法添加一个新常量（例如“sumOne = sum + faceMask”）并以这种方式计算它，因此我真的不知道该做什么以及如何增加成本值。

Java 数组整数双精度 java.util.scanner

import java.util.Scanner;
public class SpaReception{
  public static void main(String[] args) {
    double cost = 0;
    int treatment = 0;

    final double faceMask = 600.00;
    final double footMassage = 300.00;
    final double fullBodyMassage = 1500.00;

    Scanner input = new Scanner(System.in);  //create scanner for input
    System.out.println("Type in which treatment you've gotten ");
    System.out.println("Face mask: 1");
    System.out.println("Foot massage: 2");
    System.out.println("Full body massage: 3");
    System.out.println("Cancel: -1");
    treatment = input.nextInt();

    switch (treatment) {
      case 1: 
      cost += faceMask;
        break;
      case 2:
      cost += footMassage;
        break;
      case 3:
        cost += fullBodyMassage;
        break;
      case 4:
        break;
    }

    System.out.println("The cost is: "+cost);
  }
}

这就是我认为可以解决不添加另一个变量并且仍然获得菜单计算的问题。我希望这是你需要的和帮助的。

P.S：变量“处理”在开关案例或声明时以不同的方式提及。

double cost = 0;
int treatment = 0;

final double faceMask = 600.00;
final double footMassage = 300.00;
final double fullBodyMassage = 1500.00;

Scanner input = new Scanner(System.in);  //create scanner for input
System.out.println("Type in which treatment you've gotten ");
System.out.println("Face mask: 1");
System.out.println("Foot massage: 2");
System.out.println("Full body massage: 3");

input = new Scanner(input.nextLine());
for (String s : input.tokens().toArray(String[]::new))
    switch (s) {
        case "1" -> cost += faceMask;
        case "2" -> cost += footMassage;
        case "3" -> cost += fullBodyMassage;
    }

System.out.println("The cost is: "+cost);

输出

Type in which treatment you've gotten 
Face mask: 1
Foot massage: 2
Full body massage: 3
1 2 3
The cost is: 2400.0

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如何增加集成商的价值？

How do I add to the value of an integrer?

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