Multiple choice

The 'isdigit()' built-in function belongs to __________ header file in C++.

  1. string.h

  2. math.h

  3. ctype.h

  4. conio.h

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The function 'isdigit()' belongs to ctype.h function as it is the character type function used to check whether input data is digit or not.