题解 | #求平均数#
求平均数
http://www.nowcoder.com/practice/41e59cee1221424bb9291435aae79ae9
import java.util.Scanner;
public class Main {
public static void main(String[] args) {
Scanner scan = new Scanner(System.in);
int n=0,i=0;
double s=0;
while((n=scan.nextInt())>=0){
s=s+n;
i++;
}
System.out.println(String.format("%.2f",s/i));
}
}
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