java我如何确定为什么每周收入没有在我的程序中显示前三次?
周收入前三次没有显示出来。它宣称大小为4。周薪计算了4次,但没有显示出来。只显示了第四次
package test;
import java.util.*;
public class test {
public static void main(String[] args) {
String Name[]= new String[4];
double hoursWorked[] =new double[4];
double hourlyPay[] = new double[4];
double WeeklyEarnings[] =new double[4];
GetInfo(Name,hoursWorked,hourlyPay);
WeeklyEarnings[3] = CalculateTotal(hoursWorked,hourlyPay);
DisplayInfo(Name,hoursWorked,hourlyPay,WeeklyEarnings);
}
public static void GetInfo(String Name[], double hoursWorked[], double hourlyPay[])
{
String blank;
Scanner UserIn = new Scanner(System.in);
for(int i=0;i< Name.length;i++)
{
System.out.print("Please enter name #"+(i+1) + ":");
Name[i]= UserIn.nextLine();
do
{
System.out.print("Please enter the number of hours worked:");
hoursWorked[i] = UserIn.nextDouble();
if(hoursWorked[i]<0)
{
System.out.print("Invalid entry !!! Please try again");
}
}while(hoursWorked[i]<0);
System.out.print("Please enter the hourly pay rate: ");
hourlyPay[i]= UserIn.nextDouble();
blank= UserIn.nextLine();
System.out.print("\n");
}
}
public static double CalculateTotal(double hoursWorked[], double hourlyPay[])
{
double[] WeeklyEarnings =new double[4];
for(int i=0;i<hoursWorked.length;i++)
{
WeeklyEarnings[i] = hoursWorked[i] * hourlyPay[i];
}
return WeeklyEarnings[3];
}
public static void DisplayInfo(String Name[], double hoursWorked[], double hourlyPay[], double weeklyEarnings[])
{
System.out.print("\nName\t Hours Worked\t Hourly Pay\t Weekly Earnings");
for(int i=0;i<weeklyEarnings.length;i++)
{
System.out.printf("\n"+ Name[i]+"\t" +hoursWorked[i] +"\t\t" +"$" +hourlyPay[i] +"\t\t" + "$%.2f",weeklyEarnings[i]);
}
}
}
# 1 楼答案
这里要做的是只返回数组的一个元素(第四个),而应该返回所有数组并对其进行操作
# 2 楼答案
将
return WeeklyEarnings[3]
更改为return WeeklyEarnings[]
您要求该方法只返回第四个索引,而不是返回数组的所有索引