Have you ever stood in a long line waiting to buy something? How did you feel when the person standing in front of you allowed three friends to join the line? Why? How is this long line a queue?

Describe queues that you have experienced in ordinary life. Go to the airport and stand in the wrong place to buy your ticket, you'll see.

How are queues different from stacks? From linked lists?

What might be the benefits of using queues in your program? In what kind of scenario would a queue be better than a stack?