Which of the following is a Dialog with one, two, or three Button controls?

An identifier’s storage class

a) determines the period during which that identifier exists in memory b) determines whether an identifier in a multiple-source-file program is known only in the current source file or in any source file with proper definitions c) determines where the identifier can be referenced in a program (d) all of the above

dynamic_cast is often used to:

a. Perform type checking for objects. b. Convert pointers to strings. c. Upcast pointers. d. Downcast pointers.