day05.scanner

Scanner 例子

package Scanner;//练习题：输入多个数字求它们的和与均值，每输入一个数用回车键确认

import java.util.Scanner;//导包

//通过非数字来结束输出结果
public class Dome05 {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);//创建scanner
        double sum = 0;//定义和
        int m = 0;//定义输入个数
        System.out.println("请输入数据：");
        while (scanner.hasNextDouble()) {
            double x = scanner.nextDouble();
            m = m + 1;
            sum = sum + x;
            System.out.println("当前输入" + m + "个数据，数据和为" + sum);

            System.out.println(m+"个数据和为"+sum);
            System.out.println(m+"个数据均值为"+sum/m);
        }

    }
}