A software demonstration is an example of a(n) _____ presentation.

A SeekBar listeners’s ___________ method executes when the user moves the

a. onThumbMoved b. userMovedThumb c. onProgressChanged d. None of the above

Answer the following statements true (T) or false (F)

1) All virtual functions in an abstract base class must be declared as pure virtual functions 2) Referring to a derived-class object with a base-class handle is dangerous. 3) A class is made abstract by declaring that class virtual. 4) If a base class declares a pure virtual function, a derived class must implement that function to become a concrete class. 5) Polymorphic programming can eliminate the need for switch logic.