Question

What is the function of the readBytesUntil() function?

(a) Reads only integers from a stream

(b) Reads any characters from a stream

(c) Reads only special characters from a stream

(d) Tokenizes a string from a stream

The question was asked in an interview.

This key question is from Serial and Stream Communications in section Arduino Programming of Arduino

Answer 1

Correct choice is (b) Reads any characters from a stream

Easy explanation: The readBytesUntil() function belongs to the Stream class. It is used for reading any characters from a stream. The function continues to read characters entered until the termination character is found. It then puts all the collected data into a buffer.