Repetition in which the number of iterations is unknown before the loop begins executing is called ________.

memcmp would return ___________ for the call memcmp ("Hi, how are you?", "Hi, how are things?" 6).

a. 1 b. A positive number. c. 0 d. A negative number.

What is the term for the randomness of dynamic elements such as size, angle, roundness, hue, saturation, brightness, opacity, and flow?

A. Selection B. Jitter C. Change D. Variable