Question

This function checks whether the passed character is white-space.

(a) ispunct()

(b) isgraph()

(c) isspace()

(d) isalpha()

The question was asked during a job interview.

This intriguing question originated from Character Handling topic in section String Operations in C of C

Answer 1

The correct choice is (c) isspace()

For explanation: The isspace function tests for any character that is a standard white-space character.