1

我应该编写一个程序来计算房子的总占地面积。程序提示用户输入至少一个房间的长度和宽度，如果他想输入更多的房间尺寸，需要与用户核实。

它不工作。有人请帮助我吗？

import java.util.*;

public class FloorSpace
{

    public static void main (String[] args)
    {

        Scanner input = new Scanner(System.in); 

        double length = 0.0, width = 0.0, floorSpace = 0.0;
        char ans;


        do
        {
            System.out.print("Enter length: ");
            length = input.nextDouble();

            System.out.print("Enter width: ");
            width = input.nextDouble();

            floorSpace = length * width;

            floorSpace += floorSpace;

            System.out.print("Do you want to enter more room dimensions? (y/n): ");
            ans = input.nextLine().charAt(0);
        }
        while (ans == 'y');


        System.out.println("\nTotal floor space is " + floorSpace);

    }

}

哦，我刚刚发现我的计算公式有问题。有人可以帮帮我吗。

4

3 回答 3

1

您设置floorSpace为length * width每次，然后自行增加该值（实际上只是将其乘以 2）。

代替

floorSpace = length * width;

floorSpace += floorSpace;

只需

floorSpace += length * width
于 2012-12-07T12:54:50.780 回答
0

代替：

ans= input.nextLine().charAt(0);

采用：

ans = input.next().charAt(0);

要修复您的公式，请使用：

    floorSpace += length * width;

并删除：

floorSpace = length * width;

所以最终的解决方案如下：

import java.util.*;

public class FloorSpace
{

    public static void main (String[] args)
    {

        Scanner input = new Scanner(System.in); 

        double length = 0.0, width = 0.0, floorSpace = 0.0;
        char ans;


        do
        {
            System.out.print("Enter length: ");
            length = input.nextDouble();

            System.out.print("Enter width: ");
            width = input.nextDouble();

            floorSpace += length * width;

            System.out.print("Do you want to enter more room dimensions? (y/n): ");
            ans = input.next().charAt(0);
        }
        while (ans == 'y');

        System.out.println("\nTotal floor space is " + floorSpace);
    }
}
于 2012-12-07T12:52:07.193 回答
0

试试这个：

import java.util.*;

public class FloorSpace
{

    public static void main (String[] args)
    {

        Scanner input = new Scanner(System.in); 

        double length = 0.0, width = 0.0, floorSpace = 0.0;
        char ans='n'; //not for default


        do
        {
            System.out.print("Enter length: ");
            length = input.nextDouble();

            System.out.print("Enter width: ");
            width = input.nextDouble();



            floorSpace +=  length * width;

            System.out.print("Do you want to enter more room dimensions? (y/n): ");
            if (input.hasNext()){
                ans = input.next().charAt(0);
            }
        }
        while (ans == 'y');


        System.out.println("\nTotal floor space is " + floorSpace);

    }
}

问候

于 2012-12-07T12:59:41.527 回答