Which of the following is NOT a rule that must be followed when naming identifiers?
a) The first character must be one of the letters a-z, A-Z, and underscore or a dollar sign.
b) Identifiers can contain spaces.
c) Uppercase and lowercase characters are distinct.
d) After the first character, you may use the letters a-z, A-Z, the underscore, a dollar sign, or digits 0-9.

What is a distinguishing feature of today’s graphic application software?) graphic applications are used today on a variety of devices, including touch-screen kiosks and mobile phones.

Which of the following statements is false? a. a class can directly inherit from class object. b. if the class you're inheriting from declares instance variables as private, the inherited class can access those instance variables directly. c. a class's instance variables are normally declared private to enforce good software engineering. d. it's often much more efficient to create a class by inheriting from a similar class than to create the class by writing every line of code the new class requires.

Donnie does not have powerpoint. which method would be best for elana to save and share her presentation as is? a pdf a doc an rtf a ppt