GNU compiler doesn't like gets()

Question

I typed in the gets() in gedit which is a basic text editor in linux. I compiled the program, and the compiler told me that gets() is unsafe and refused to execute. I read that gets() is depreciated, but the cryptic article I read [ https://stackoverflow.com/questions/1694036/why-is-the-gets-function-so-dangerous-that-it-should-not-be-used ] mentioned something data overflow problems. It recommends to use fgets(), but that function needs more arguments and the syntax of fgets() is unfamiliar to me.
Would somebody please explain comments in this link to me in simpler English? Thanks.

Answer 1

gets() does not care if you read/write to memory beyond what is allocated to you, e.g. writing 10 characters to a character array of size 5. Please wait while I write and test a sample.
EDIT: Nvm, even better, an existing code and thread on gets() and "why it works".
https://www.sololearn.com/Discuss/1493835/?ref=app

Answer 2

Did really throw an error because of gets()? Or was it just a warning? Because if it was just a warning, it still compiled your program, and you can stil execute it.