When working with strings in the C programming language, filtering out unwanted characters is a common task. Whether you're preparing data for processing or cleaning up input from a user, C provides robust tools to manipulate strings effectively. This article will focus on "String filtering in C," specifically how to remove all characters in a string except alphabets. https://docs.vultr.com/clang/examples/remove-all-characters-in-a-string-except-alphabets