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......
//输出格式为：System.out.println(String.format("%.2f",avg));
int n = scan.nextInt();
int count = 0;
int sum = 0;
double avg=0;
while(n>0) {
count++;
sum+=n;
n=scan.nextInt();
}
avg =(double)sum/count;
System.out.println(String.format("%.2f",avg));
}
}
记得转换类型 avg =(double)sum/count;
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