import java.util.Scanner;

public class PrePost
{
    public static void main(String [] args)
    {
        int age;
	Scanner userInput;
	age = 0;
	userInput = new Scanner(System.in);

	System.out.println("Pre-test loop never runs because the BE is false");
	while (age < 0)
	{
	    System.out.print("Type in your age as a whole number: ");
            age = userInput.nextInt();
	}
	System.out.println("You typed in " + age);

	System.out.println("\n\nPost-test loop guaranteed to run even when the BE is false");
        do
	{
	    System.out.print("Type in your age as a whole number: ");
            age = userInput.nextInt();
	}   while (age < 0);
	System.out.println("You typed in " + age);
	
    }
}