In a stack, what will be the output of popping an element from an empty stack?

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Question: In a stack, what will be the output of popping an element from an empty stack?

Options:

Correct Answer: Error

Solution:

Popping an element from an empty stack typically results in an error, as there are no elements to remove.

In a stack, what will be the output of popping an element from an empty stack?

In a stack, what will be the output of popping an element from an empty stack?

Step 1: Understand what a stack is. A stack is a data structure that stores items in a last-in, first-out (LIFO) manner.
Step 2: Know what 'popping' means. Popping an element means removing the top item from the stack.
Step 3: Recognize what an empty stack is. An empty stack has no items in it.
Step 4: Consider what happens when you try to pop from an empty stack. Since there are no items to remove, the operation cannot be completed.
Step 5: Conclude that trying to pop from an empty stack usually results in an error or an exception.

Stack Data Structure – A stack is a collection of elements that follows the Last In, First Out (LIFO) principle, where elements are added and removed from the top.
Error Handling – Understanding how data structures handle operations when they are in an invalid state, such as popping from an empty stack.