Thread: Print Goodbye

I don't quite understand what you're trying to do, but from what i understand this is what you're looking for:

import java.util.Scanner;
 
public class While {
 
  public static void main(String[] args) {   
    Scanner input = new Scanner(System.in); 
 
    int num; // 
    int numOfAmount = 0; 
    float totalAmount = 0;
    float average;     
    System.out.println("Enter a score or a negative number to end the program: "); //prompt the user for an input
    num = input.nextInt();
 
    while(num >= 0)
    {
    numOfAmount++; //
    totalAmount = totalAmount + num; 
 
    System.out.println("Enter a number or a negative number to end the program: "); //
    num = input.nextInt();
	    if (num >=0) {
	    	average = totalAmount / numOfAmount; //calculate the average score
	    	System.out.println("The average score is " + average);
	    }
    }
    System.out.println("Goodbye");
  }
}

Hi sorry I should clarify. I need the program to calculate the average only when at least one number is entered and shows “goodbye” if no numbers are entered (the user enters a negative number for the first input). Right now it calculates the average but I need it to output "goodbye" if the first input is a negative number.

oh, ok then try this:

 
import java.util.Scanner;
 
public class While {
 
	public static void main(String[] args) {
		Scanner input = new Scanner(System.in);
 
		int num;
		int numOfAmount = 0;
		float totalAmount = 0;
		float average;
		System.out.println("Enter a score or a negative number to end the program: ");
		num = input.nextInt();
 
		while (num >= 0) {
			numOfAmount++; //
			totalAmount = totalAmount + num;
			System.out.println("Enter a number or a negative number to end the program: ");
			num = input.nextInt();
		}
		if (numOfAmount >= 1) {
			average = totalAmount / numOfAmount;
			System.out.println("The average score is " + average);
		} else {
			System.out.println("Goodbye");
		}
	}
}