Question

Which function is used to check whether a character is an alphabet?

(a) isalpha()

(b) isalnum()

(c) isdigit()

(d) isblank()

I had been asked this question by my school principal while I was bunking the class.

My doubt is from Character Classification topic in chapter Types, Pointers, Arrays & Structures in C++ of C++

Answer 1

Correct option is (a) isalpha()

The explanation: Character classification provides isalpha() function to check whether a character in C++ is an alphabet or not.