Answer 1

Well here's a few links I thought it'll be helpful! :D
I was struggling with abstraction and encapsulation too once... until these explanation had finally answered my question!
Btw hope it helps tho xP

encapsulation:
https://www.geeksforgeeks.org/encapsulation-in-c/

abstraction:
https://www.geeksforgeeks.org/abstraction-in-c/