What is a stack in data stricture?????

Question

I am in confusion.Please anyone explain in simply...

Answer 1

This is SoloLearn approved lesson on stack in data structures.
https://www.sololearn.com/learn/642/?ref=app

Answer 2

basically stack is a primary data structure with work on the principle of LIFO (last in first out)
that means elements which Is inserted at the last will be treated 1st for any operation