i) Stack pointer

Implementation of Stack using Pointers

Suppose someone designed a Stack data abstraction with the following operations:(a) Push: Adds an element on top of the stack.(b) Pop: Removes the top element from the stack.(c) Top: Returns a pointer to the top of the stack.Give your critical comment on the design of this data abstraction.

In linked representation of stack the null pointer of the last node in the list signals ........a.Middle value of stackb.In between some valuec.Bottom of the stackd.Beginning of the stackClear my choice

Which of the following is not an operation on a stack?

What is the output of the following code snippet?std::stack<int> s;s.push(1);s.push(2);s.push(3);std::cout << s.size() << " " << s.top();3 13 22 33 3