Question

What is the use of the sq() function?

(a) To find the square root of a number

(b) To find the square of a number

(c) To find the cube of a number

(d) To find the cube root of a number

The question was posed to me in unit test.

This interesting question is from Mathematical Functions topic in portion Arduino Programming of Arduino

Answer 1

Correct answer is (b) To find the square of a number

For explanation I would say: The sq() function is used to find the square of a number. It takes one argument; the number whose square is to be found out. This function can accept any number-based datatypes and gives the output in the double datatype.