output help

[emma4]

Hi my code does everything I want, I just need to add one thing if someone could please help. 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.

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 totalAmout = 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 + score; 
            
    System.out.println("Enter a number or a negative number to end the program: "); //
    num = input.nextInt();
    }
        
    average = totalAmount / numOfAmount; //calculate the average score
    System.out.println("The average score is " + average); 
  }

[kfcSmitty]

If the first value was a negative number then it would never enter your loop and thus 'totalAmout' would remain 0.

if(totalAmout == 0){
  System.out.println("Goodbye");
}else{
      average = totalAmount / numOfAmount; //calculate the average score
    System.out.println("The average score is " + average); 
}