Skip to content

PRO TIP Block youtube.com at the DNS level — Pi-hole, NextDNS or your hosts file — but allow youtube-nocookie.com and i.ytimg.com. These tutorials keep playing; the rabbit hole does not.

Learning without distractions

isalpha() Function | C Programming Tutorial

5.7K views on YouTube

How to use the isalpha() function to check if a character is alphabetic or not in C. Source code: https://github.com/portfoliocourses/c-example-code/blob/main/isalpha.c. Check out https://www.portfoliocourses.com to build a portfolio that will impress employers!