int dequeueF(dequeue *p); A de-queue is kind of queue in which elements can be added or removed from the either end but not from the middle . #define MAX 30 "); A deque holds data in blocks of allocated memory. What is Double Ended Queue (DeQueue)? Like stack, queue is also an ordered list of elements of similar data types. Once a new element is inserted into the Queue, all the elements inserted before the new element in the queue must be removed, to remove the new element.                     { int full(dequeue *p); #include     while(i!=P->rear)     if(empty(P)) A de-queue is kind of queue in which elements can be added or removed from the either end but not from the middle .                         exit(0);         initialize(P); the term de-queue is taken from double ended Q.. The order is First In First Out (FIFO).     printf("\n%d\n",P->data[P->rear]);     int i; int dequeueR(dequeue *p); 2.         switch(op)                     if(full(&q)) Queue is also an abstract data type or a linear data structure, just like stack data structure, in which the first element is inserted from one end called the REAR(also called tail), and the removal of existing element takes place from the other end called as FRONT(also called head)..         P->rear=(P->rear-1+MAX)%MAX;                                  if(full(&q)) void enqueueR(dequeue *P,int x)                     printf("\nDeleted Element is %d\n",x);                     break; int dequeueF(dequeue *P)     return(x);     {                     printf("\nEnter the data:");                      The following steps are taken to perform dequeueoperation − 1. 2.     }                         printf("\nQueue is Full!!                         } The Operations in DeQueue are.         i=(i+1)%MAX; It contains only sequential iterators and hence random access is not granted.     P->rear=-1; The enqueue() and dequeue() are two important functions used in a queue. Deque or Double Ended Queue is a generalized version of Queue data structure that allows insert and delete at both ends.. Operations on Deque: Mainly the following four basic operations are performed on queue: insertFront(): Adds an item at the front of Deque.                         printf("\nQueue is Full!!                     for(i=0;idata[0]=x; typedef struct dequeue A Queue is a linear structure which follows a particular order in which the operations are performed.     { { }       return(x);             case 5: if(empty(&q)) Queue Data Structure Recent articles on Queue.                         { It is just like a queue but does not support FIFO structure.                     x=dequeueF(&q); It works on the principle of FIFO (First In First Out).     { { ######################################################################3.                     initialize(&q); }   A good example of a queue is any queue of consumers for a resource where the consumer that came first is served first.         printf("\n%d",P->data[i]); DeQueue is a data structure in which elements may be added to or deleted from the front or the rear. 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