package com.c2;

import java.util.Scanner;

public class DD {

	// 求数组的平均值即 ：a[i]/a.length

	public static void main(String[] args) {

		Scanner c = new Scanner(System.in);

		int a[] = new int[4];

		DD b = new DD();

		// DD d=new DD();

		/*

		 * System.out.println("请输入10个数-----"); int b=c.nextInt(); int

		 * b1=c.nextInt(); int b2=c.nextInt(); int b3=c.nextInt(); int

		 * b4=c.nextInt();

		 */// 很sb啊。这么手打出来会累，会繁琐，不如用循环.比如放入10000个数，我难道要写10000行、？？

		double s = 0;

		for (int i = 0; i < a.length; i++) {

			System.out.println("请输入第" + (i + 1) + "个数---");

			a[i] = c.nextInt();

			s += a[i];

			// System.out.println(""+s);

		}

		System.out.println("平均值为：" + s / a.length);

		System.out.println("总和为：" + s);

	}

}