Starting Out with C++ from Control Structures through Objects Brief, Student Value Edition (8th Edition)
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Chapter 18, Problem 21RQE
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By default the queue ADT uses “deque” container.

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Given the following code, assume the myQueue object is a queue that can hold integers and that value is an int variable.1   myQueue.enqueue(0);2   myQueue.enqueue(1);3   myQueue.enqueue(2);4   myQueue.dequeue(value);5   myQueue.enqueue(3);6   myQueue.dequeue(value);7   Console.WriteLine(value);Assume that the dequeue function, called on lines 4 and 6, stores the number removed from the queue in the value variable. What will the statement on line 7 display?
Given the following code, assume the myQueue object is a queue that can hold integers and that value is an int variable.1   myQueue.enqueue(0);2   myQueue.enqueue(1);3   myQueue.enqueue(2);4   myQueue.dequeue(value);5   myQueue.dequeue(value);6   myQueue.dequeue(value);7   Console.WriteLine(value);Assume that the dequeue function, called on lines 4, 5, and 6, stores the number removed from the queue in the value variable. What will the statement on line 7 display? Question 27 options:   a)  1   b)  none of these   c)  2   d)  0
Data Structute Using c++ Queue  The Full Question is on the Picture I need to continue on this code please ::: #include <iostream> using namespace std;   struct node{int data;node *next;node(int d,node *n=0){data=d;next=n;}}; class queue{node *front,*rear;public:queue();bool empty();void append(int el);bool serve();bool retrieve(int &el);//destructor ...};   bool queue::empty(){return front==0;} queue::queue(){front=rear=0;} void queue::append(int el){if(front==0)front=rear=new node(el);elserear=rear->next=new node(el);} bool queue::serve(){if(front==0)return false;if(front==rear){delete front;front=rear=0;}else{node *t=front;front=front->next;delete t;}return true;} bool queue::retrieve(int &el){if(front==0)return false;el=front->data;return true;}     int main (){QueueLinked<int> custQ; // Line (queue) of customers containing the QueueArray<int> custQ; // Line (queue) of customers containing the// time that each customer arrived and// joined the…

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Starting Out with C++ from Control Structures through Objects Brief, Student Value Edition (8th Edition)

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