Question

___ function returns the first occurrence of a character in a string.

(a) string

(b) index

(c) split

(d) length

This question was addressed to me in an international level competition.

My doubt stems from perl topic in chapter Awk – An Advanced Filter & Perl – The Master Manipulator of Unix

Answer 1

The correct choice is (b) index

To explain I would say: The index function returns the first occurrence of a character in a string. For example,