摘要:
import java.util.*;public class Example2_4{public static void main(String arg[]){Scanner reader=new Scanner(System.in);double sum=0;int m=0;while(reader.hasNextDouble()){double x=reader.nextDouble();m=m+1;sum=sum+x;}System.out.printf("%d个数的和为%f\n",m,sum);System.out.printf("%d个数的平均值是%f 阅读全文