如何将 if 语句放在 if-else if 语句中

Question

我正在尝试制作一个工资计算器，如果申请人未满 18 岁，他们就不能加班，因为在我所在的州，未成年人的最长允许时间为 18 小时。 我已经设置了在达到 40 小时之前您无法获得加班费的设置。 我能为此做些什么吗？

import java.util.Scanner;
public class SalaryV2
{
public static void main(String[] args)
{

//Declare and initialize variables
double totalSalary;
boolean isOvertime;
Scanner in = new Scanner(System.in);

//Input
System.out.print("Please enter your name (first last): ");
String firstName = in.next();
String lastName = in.nextLine();

System.out.print("Please enter your age: ");
String customerAge = in.nextLine();
double age = Double.parseDouble(customerAge);

System.out.print("\nWhat is your hourly rate of pay: ");
String rateOfPay = in.nextLine();
double payRate = Double.parseDouble(rateOfPay);

System.out.print("\nHow many hours did you work: ");
String totalHoursWorked = in.nextLine();
double totalHours = Double.parseDouble(totalHoursWorked);
System.out.println();

    //Processing

 if(17 > age)
{
    isOvertime = false;
        totalSalary = totalHours * payRate;
}
else if(totalHours > 40)
{
    if(totalHours > 40)
    {
        isOvertime = true;
        totalSalary = 40 * payRate + (totalHours - 40) * payRate * 1.5;
    }
    else
    {
        isOvertime = false;
        totalSalary = totalHours * payRate;
    }
}
    

    
    

//Output
System.out.print("Employee Name: " + lastName + ", " + firstName\n);
System.out.print("Hours worked: " + totalHours);
System.out.println("\t\tOvertime: " + isOvertime +);
System.out.println("Salary: " + totalSalary);

} }

Answer 1

保持简单，不需要 else-if-if，

import java.util.Scanner;
public class SalaryV2{
public static void main(String[] args){

//Declare and initialize variables
double totalSalary= 0;
boolean isOvertime = false;
Scanner in = new Scanner(System.in);

//Input
System.out.print("Please enter your name (first last): ");
String firstName = in.next();
String lastName = in.nextLine();

System.out.print("Please enter your age: ");
String customerAge = in.nextLine();
double age = Double.parseDouble(customerAge);

System.out.print("\nWhat is your hourly rate of pay: ");
String rateOfPay = in.nextLine();
double payRate = Double.parseDouble(rateOfPay);

System.out.print("\nHow many hours did you work: ");
String totalHoursWorked = in.nextLine();
double totalHours = Double.parseDouble(totalHoursWorked);
System.out.println();

//Processing

if(age >= 18 && totalHours > 40) {
  isOvertime = true;
  totalSalary = 40 * payRate + (totalHours - 40) * payRate * 1.5;
}else{
  isOvertime = false;
  totalSalary = totalHours * payRate;
}

//Output
System.out.print("Employee Name: " + lastName + ", " + firstName +'\n' );
System.out.print("Hours worked: " + totalHours + '\n');
System.out.println("Overtime: " + isOvertime );
System.out.println("Salary: " + totalSalary);

}}

使用以下输入 STDIN firstname lastname 19 10 42

输出 ：

$javac SalaryV2.java
$java -Xmx128M -Xms16M SalaryV2
Please enter your name (first last): Please enter your age: 
What is your hourly rate of pay: 
How many hours did you work: 
Employee Name: lastname, firstname
Hours worked: 42.0
Overtime: true
Salary: 430.0

如果未满 18 岁标准输入

名字 姓氏 17 10 42

输出 ：

$javac SalaryV2.java
$java -Xmx128M -Xms16M SalaryV2
Please enter your name (first last): Please enter your age: 
What is your hourly rate of pay: 
How many hours did you work: 
Employee Name:  lastname, firstname
Hours worked: 42.0
Overtime: false
Salary: 420.0

通过执行上面的代码进行检查。

Answer 2

我不太明白你的问题，但这里有一些你可以改进的地方。

在第一个 if 中，您甚至不考虑 17 岁，您应该输入if(17 >= age)或if(18 > age) 。

然后，在 else 中，如果您将条件与下面的 if 相同，那么您应该做的是：

else if(totalHours > 40)
{
    isOvertime = true;
    totalSalary = 40 * payRate + (totalHours - 40) * payRate * 1.5;
}
else
{
    isOvertime = false;
    totalSalary = totalHours * payRate;
}

为了使您的代码更高效，您可以将两个条件放在一个 if 中。

if(18 > age && totalHours > 40)
{
    isOvertime = false;
    totalSalary = totalHours * payRate;
}
else
{
    isOvertime = true;
    totalSalary = 40 * payRate + (totalHours - 40) * payRate * 1.5;
}

我没有检查代码是否真的有效，但应该没问题

Answer 3

如果你是未成年人，你不能加班（这看起来很奇怪）。
如果你的时间少于 40 小时，你就不能加班（每个人都知道这样做的奇怪后果......）。

因此，只有年满 18 周岁且工作时间超过 40 小时才能获得加班费。

if((18 <= age) && (totalHours > 40))
{
    isOvertime = false;
    totalSalary = totalHours * payRate;
} else
{   
    isOvertime = true;
    totalSalary = 40 * payRate + (totalHours - 40) * payRate * 1.5;
    
}

即我不认为需要嵌套if s。