Question

应该根据输入变量计算销售佣金，并在循环完成后列出它们。

我不确定如何列出之后的totalEarned值，因为循环完成后它们会改变。

import java.util.Scanner;

public class SalesCommissionCalc

{
 public static void main( String [] args )
  {
     final int SENTINEL = -1;
     double grossSales;
     double totalEarned;
     Scanner scan = new Scanner( System.in );

     System.out.print( "Enter gross sales for the last week, or -1 to stop > " );
     grossSales = scan.nextDouble( );

     while ( grossSales != SENTINEL )
 {
         totalEarned =(500 + (grossSales * .08));
         System.out.println( "Earned last week: $" + totalEarned );

         System.out.print( "Enter gross sales for the last week, or -1 to stop > " );
         grossSales = scan.nextDouble( );
         System.out.println( "Total Earned: $" + totalEarned );
     }

  }
}

如果我在程序中添加了名称，是否还必须引入另一个循环，还是可以将其压缩到同一个循环中，并在循环后列出它们时将输入名称附加到输入值上？ / p>

Answer 1

您可以将值保存在列表中，然后以所需的方式检索和使用它们。

import java.util.Scanner;

public class SalesCommissionCalc  
{
 public static void main( String [] args )
 {
     final int SENTINEL = -1;
     double grossSales;
     double totalEarned;
     //declare the list
     List<double> earnings = new List<double>;
     Scanner scan = new Scanner( System.in );

     System.out.print( "Enter gross sales for the last week, or -1 to stop > " );
     grossSales = scan.nextDouble( );

     while ( grossSales != SENTINEL )
     {
         totalEarned =(500 + (grossSales * .08));
         //add the value to the list
         earnings.add(totalEarned);
         System.out.println( "Earned last week: $" + totalEarned );

         System.out.print( "Enter gross sales for the last week, or -1 to stop > " );
         grossSales = scan.nextDouble( );
         System.out.println( "Total Earned: $" + totalEarned );
     }

     //retrieve the value at the third position in the list
     earnings.get(3); //here you could also use a foreach or for loop to iterate through all list entries
  }
}

Answer 2

您必须通过将它们传递到列表或数组中来检索这些值。

List<double> earned = new List<double>;

循环完成后如何列出输入值？

2 个答案: