Scanner续

Scanner续

一道基础题：输入多个数字，求数字的总和与平均数，通过非数字来结束输入，打印输出结果。

以下代码结合了Scanner和循环语句来解决它：

package com.cxf.scanner;

import java.util.Scanner;

public class Demo5 {
    public static void main(String[] args) {
        Scanner scanner1 = new Scanner(System.in);
        double sum = 0;
        double input = 0;
        int times = 0;
        System.out.println("please input:");
        while(scanner1.hasNextDouble()) {
            System.out.println("your next input:");
            input = scanner1.nextDouble();
            sum += input;
            times++;
        }
        System.out.println("the sum = "+ sum);
        if(times != 0) {
            System.out.println("the average = "+ sum/times);
        }
        scanner1.close();
    }
}

输入及输出结果：

please input:
10
your next input:
20
your next input:
30
your next input:
40
your next input:
d
the sum = 100.0
the average = 25.0