总结:对象调用方法,与在main 里直接输出没什么大的区别,少用方法,
乱搞++++
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);
}
}