Example2_4.java

import java.util.*;

import javax.print.DocFlavor.READER;

public class Example2_4 {

/**
* @param args
*/
public static void main(String[] args) {
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.println(m);
System.out.println(m+"geshudeheshi"+sum);
System.out.println(m+"geshudepingjunshu"+sum/m);
}

}