题解 | #求平均数#

import java.util.Scanner;

public class Main {

    public static void main(String[] args) {
        Scanner scan = new Scanner(System.in);

        //write your code here......
        int count = 0;
        float avg = 0;
        int temp = scan.nextInt();
        while(temp > 0){
            count ++;
            avg += temp;
            temp = scan.nextInt();
        }
        avg = avg / count;
        System.out.println(String.format("%.2f", avg));
        //输出格式为：System.out.println(String.format("%.2f",avg));
        

    }
}