Question

What is the maximum number of arguments for the constrain() function?

(a) 1

(b) 2

(c) 3

(d) 4

This question was addressed to me in a national level competition.

This question is from Mathematical Functions in section Arduino Programming of Arduino

Answer 1

The correct answer is (c) 3

For explanation: The constrain() function is used to restrict the output from going below or above a certain minimum or maximum number respectively. It takes three arguments; the number to be contrained, the minimum value, and the maximum value.