To divide one table cell into two columns, use the ____ command.

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

1) The compiler will create a default constructor for a class even if you already declared a constructor(s). 2) Every class must have at east one constructor. 3) A class cannot have references to objects of other classes as members. 4) Composition is a form of software reuse. 5) User-defined classes may be composed of other user-defined classes.

MC When a Scale is__________ , its callback method is invoked.

a) deleted. b) created. c) moved. d) Both b and c.