I have spent hours upon hours on this and the kata says it's getting invalid memory address, while on my own compiler it works completely fine. I'm really pissed off, none of this makes sense

It's very simple, although it contains a magic number which isn't great practice unless if it's self-explanatory. The 3 here is self-explanatory but the 2 is not. Things like this should be labeled with a comment or set as a variable.

"Make it green, than make it clean" I feel like is a reference from Undertale

I think it's not necessary for 0201 to be 201

How are we suppose to modify a paramater when it's a constant

what why

I'll agree with this, I believe the author needs to give a much better explanation

I kind of forget to do simple logic like this, I just like using for loops similar to how majority of C is operated