• First-in, First-out logic.
• Acts as a queue of customers in a bank.

• When possible, use the generic version of Queue<T>.

Queue q = new Queue();
q.Enqueue("Hello");
q.Enqueue("World");
Console.WriteLine(q.Dequeue() + " " + q.Dequeue());
 
Queue<string> qg = new Queue<string>();
qg.Enqueue("Hello");
qg.Enqueue("World");
Console.WriteLine(qg.Dequeue() + " " + qg.Dequeue());