import java.util.Scanner;
public class sentinel {
static Scanner input = new Scanner(System.in);
static final int SENTINEL = -999;
public static void main (String args[]){
int number;
int sum = 0;
int count = 0;
System.out.println("enter positivel integers ending with " +sum);
number = input.nextInt();
while (number != SENTINEL){
sum = sum + number;
count++;
number = input.nextInt();
}
System.out.printf("the sum of %d numbers = %d%n",count, sum);
if(count != 0)
System.out.printf("the average = %d%n",(sum/count));
else
System.out.println("no input" );
}
}
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