Determining Largest and Smallest integers, without creating multiple ints

Question

I created a program that reads a list of numbers (doubles) terminated by a sentinal value, and outputs the average. The do-while statement with the sentinal value termination uses only one specified integer, changed with the input of each new number. Now without specifying more integers is there a way i can determine the largest and smallest number on the list?
import java.util.*;
public class LabThree
    public static void main(String[] args)
        Scanner keyboard = new Scanner(System.in);
        int totaldoubles, max, min;
        double total, nextnum;
        String answer;
        do
         System.out.println();
         System.out.println("Enter a list of nonnegative integers");
            System.out.println("When you are finished with the list, enter a negative number");
            System.out.println();
            System.out.println("I will tell you the largest and smallest integer");
            System.out.println("and give you the average the list");
            totaldoubles = 0 ;
            total = 0;
            nextnum = keyboard.nextDouble();
            while (nextnum >= 0)
                total = total + nextnum;
                totaldoubles++;
                nextnum = keyboard.nextDouble();
            if (totaldoubles > 0)
                System.out.println("The average is: " + (total/totaldoubles));
            else
                System.out.println("No scores to average");
            System.out.println();
            System.out.println("Do you want to average another list?");
            System.out.println("Enter Yes or No");
            answer = keyboard.next();
        }while (answer.equalsIgnoreCase("yes"));
}Message was edited by:
thecynicle1
Message was edited by:
thecynicle1

Answer 1

ok i tried this:
import java.util.*;
public class LabThree
public static void main(String[] args)
Scanner keyboard = new Scanner(System.in);
int totaldoubles;
double total, nextnum, max, min;
String answer;
do
     System.out.println();
     System.out.println("Enter a list of nonnegative integers");
System.out.println("When you are finished with the list, enter a negative number");
System.out.println();
System.out.println("I will tell you the largest and smallest integer");
System.out.println("and give you the average the list");
totaldoubles = 0 ;
total = 0;
nextnum = keyboard.nextDouble();
max = nextnum;
min = nextnum;
while (nextnum >= 0)
total = total + nextnum;
totaldoubles++;
nextnum = keyboard.nextDouble();
if (nextnum > max)
max = nextnum;
else if (nextnum < min)
min = nextnum;
if (totaldoubles > 0)
System.out.println("The average is: " + (total/totaldoubles));
System.out.println("The largest number was: " + max);
else
System.out.println("No scores to average");
System.out.println();
System.out.println("Do you want to average another list?");
System.out.println("Enter Yes or No");
answer = keyboard.next();
}while (answer.equalsIgnoreCase("yes"));
But now the compiler is saying that the underlined "else" is without an if
Message was edited by:
thecynicle1
Message was edited by:
thecynicle1
Message was edited by:
thecynicle1