import java.util.*;
import java.io.*;
 
 
public class AvgNums {
public static void main(String args[])throws IOException {
 
int count=0;
 
double sum= 0.0;
 
 
FileWriter fout = new FileWriter("test.txt");
fout.write("2 3.4 5 6 7.4 9.1 10.5 готово");
fout.close();
FileReader fin = new FileReader("test.txt");
Scanner src = new Scanner(fin);
 
 
while(src.hasNext()) {
if(src.hasNextDouble()) {
sum += src.nextDouble();
System.out.println(sum);
count++;
}
}
if(src.hasNext()) {
String str = src.next();
 
if(str.equals("готово"))
{
return;
}
else {
System.out.println("Ошибка формата файла.");
return;
}
}
 
src.close();
System.out.println("средне равно: " +sum/count);
}
}

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