Question

我需要为我的CIS课程编写一个程序，我觉得我已经设置了多数。为95％，简单地总结一下。我必须写一个程序，提示用户输入他们的姓名，工资率，工作小时数。然后它获取数据，计算总工资，然后减去税，然后将其全部打印到屏幕上。该程序应允许多个用户为员工数量添加数据，这迫使我相信我需要设置他们必须输入的值才能结束程序。问题是我遗憾地对如何编码它感到困惑，因此当输入值时，程序结束。我几乎肯定需要一个while循环，但任何形式的反馈都会非常感激。

package program1;

import java.util.*;


public class Program1 {

static Scanner console = new Scanner (System.in);

public static void main(String[] args) {

    String firstName, lastName ;
    double payRate;
    int hoursWorked;
    double netPay;
    double grossPay;
    String formatNet;


    System.out.println("Please enter the employee's name. (Enter a -1 when finished): ")          ;
    firstName = console.nextLine();
    lastName  = console.nextLine();

    System.out.println("Please enter the employee's pay rate. ");
    payRate = console.nextDouble();

    System.out.println("Please enter the employee's hours worked. ");
    hoursWorked = console.nextInt();

    if(hoursWorked > 40)
    {
        grossPay = payRate * hoursWorked * 1.5;
    }
    else
    {
        grossPay = payRate * hoursWorked;
    }

    netPay = grossPay - (grossPay * .15);
    formatNet = String.format("%.2f", netPay);
    System.out.println(firstName +" "+ lastName + "'s net pay is " + formatNet);

 }

}

Answer 1

是的，你需要一个循环。请尝试以下代码。

还要注意在{。}之后出现console.nextLine(); console.nextDouble();和console.nextInt();。

public static void main(String[] args) {

    String firstName, lastName;
    double payRate;
    int hoursWorked;
    double netPay;
    double grossPay;
    String formatNet;

    while (true){
        System.out.println("Please enter the employee's name. (Enter a -1 when finished): ");
        firstName = console.nextLine();
        if ("-1".equals(firstName.trim())) break;
        lastName = console.nextLine();

        System.out.println("Please enter the employee's pay rate. ");
        payRate = console.nextDouble();
        console.nextLine();

        System.out.println("Please enter the employee's hours worked. ");
        hoursWorked = console.nextInt();
        console.nextLine();

        if (hoursWorked > 40) {
            grossPay = payRate * hoursWorked * 1.5;
        } else {
            grossPay = payRate * hoursWorked;
        }

        netPay = grossPay - (grossPay * .15);
        formatNet = String.format("%.2f", netPay);
        System.out.println(firstName + " " + lastName + "'s net pay is " + formatNet);
    }

}

Answer 2

使用do while循环并使用某些条件可以终止循环，就像您可以提示用户“是否要继续（y / n）”并根据值重新进行迭代。

修改

do { //your code goes here System.out.println("Do you want to continue(y/n)?"); isContinue = console.next(); }while(isContinue = "Y" || isContinue = "y")

在break条件中检查firstname is -1后，您可以使用if语句

Answer 3

这是一个解决方案。我投入了一些面向对象，方法提取和资源管理，以便在使用后始终关闭扫描仪。

import java.util.Scanner;

public class Program1 {

    public static void main(String[] args) {
        Scanner console = new Scanner(System.in);
        try {
            do {
                enterEmployee(console);
                System.out.println("Another employee? (q to quit)");
            } while (!"q".equals(console.nextLine()));
        } finally {
            console.close();
        }
    }

    private static void enterEmployee(Scanner console) {
        Employee employee = new Employee();
        System.out.println("Please enter the employee's first name: ");
        employee.setFirstName(console.nextLine());

        System.out.println("Please enter the employee's last name: ");
        employee.setLastName(console.nextLine());

        System.out.println("Please enter the employee's pay rate: ");
        employee.setPayRate(console.nextDouble());
        console.nextLine();

        System.out.println("Please enter the employee's hours worked: ");
        employee.setHoursWorked(console.nextInt());
        console.nextLine();

        System.out.println(employee + "'s net pay is " + String.format("%.2f", employee.getNetPay()));
    }

    public static class Employee {
        private String firstName;
        private String lastName;
        private double payRate;
        private int hoursWorked;
        private double netPay;
        private double grossPay;

        public String getFirstName() {
            return firstName;
        }

        public void setFirstName(String firstName) {
            this.firstName = firstName;
        }

        public String getLastName() {
            return lastName;
        }

        public void setLastName(String lastName) {
            this.lastName = lastName;
        }

        public double getPayRate() {
            return payRate;
        }

        public void setPayRate(double payRate) {
            this.payRate = payRate;
        }

        public int getHoursWorked() {
            return hoursWorked;
        }

        public void setHoursWorked(int hoursWorked) {
            this.hoursWorked = hoursWorked;
            if (hoursWorked > 40) {
                grossPay = payRate * hoursWorked * 1.5;
            } else {
                grossPay = payRate * hoursWorked;
            }

            netPay = grossPay - (grossPay * .15);
        }

        public double getNetPay() {
            return netPay;
        }

        public double getGrossPay() {
            return grossPay;
        }

        @Override
        public String toString() {
            return firstName + " " + lastName;
        }
    }
}

提示程序结束

3 个答案: