A summary note about queues in C programming, covering FIFO behavior, enqueue/dequeue operations, and implementation options (circular array vs. linked list) with basic prerequisites and how queues contrast with stacks.

Source: COP 3502c Lecture Notes, Computer Science I (UCF)Tags: queue, queues in C, FIFO, first in first out, enqueue, dequeue, circular array, circular queue, linked list queue, COP 3502c, data structures, abstract data type, ADTDifficulty: Beginner to IntermediatePrerequisites: Basic C programming, pointers, dynamic memory allocation (malloc/free), structs, linked lists. Familiarity with stacks (LIFO) is helpful for comparison.<h2>Big Picture</h2>Queues are the second foundational constrained-access data structure you meet in COP 3502c, right alongside stacks. Where a stack restricts access to one end, a queue uses two ends: one for adding, one for removing. This maps directly onto everyday situations (a queue at a shop, a print job waiting in line…