import element.*;

public class Predicates
{
    public static boolean between(double a, double b, double c)
    // post: returns true iff a <= b <= c
    {
        return (a <= b) && (b <= c);
    }

    public static boolean isLower(char c)
    // post: returns true if c is a lower case letter
    {
        return ('a' <= c) && (c <= 'z');
    }

    public static boolean between(char a, char b, char c)
    // post: returns true if a <= b <= c in the ASCII ordering
    {
        return (a <= b) && (b <= c);
    }

    public static boolean isUpper(char c)
    // post: return true if c is an uppercase letter
    {
        return between('A',c,'Z');
    }

    public static void main(String args[])
    {
        DrawingWindow d = new DrawingWindow();
        ConsoleWindow c = new ConsoleWindow();
        int x, y;
        int i;
        String greeting = "Hello, World.";

        for (x = 0; x < d.bounds().right(); x++)
        {
            for (y = 0; y < d.bounds().bottom(); y++)
            {
                if (old.between(x*0.5, y*1.0, x*1.0))
                {
                    d.draw(new Pt(x,y));
                }
            }
        }

        for (i = 0; i < greeting.length(); i++)
        {
            c.out.println(greeting.charAt(i)+": lower? "
                          +isLower(greeting.charAt(i))+" "+ 
                          between('a',greeting.charAt(i),'z'));
        }
        //      System.exit(0);
    }
}

class old
{
    public static boolean between(double a, double b, double c)
    // post: returns true if a <= b <= c
    {
        if ((a <= b) && (b < c)) return true;
        else return false;
    }
}