GIGO: words unreadable aloud

Chapter 5, Exercise 6

Bruce suggests that we "Create a class with protected data. Create a second class in the same file with a method that manipulates the protected data in the first class."

package x;
class c5x6_parent {
    protected var pd = 12;
}
class c5x6_child extends c5x6_parent {
    def seeSet ( npd: Int ) : Int = {
        val res = this.pd;
        this.pd = npd;
        res
    }
}
object c5x6 {
    def main ( args: Array[String] ) = {
        val z = new c5x6_child;
        Console.println( z.seeSet( 42 ) );
        Console.println( z.seeSet( 69 ) );
    }
}

10:02:32 PM comment/