Part 2: In this part, you are going to design a dynamic queue of characters implemented as a linked list. Complete the code below as specified by the comments in bold. typedef char el t; class Queue { private: struct QueueNode el t letter; { QueueNode *next; // letter in the node // Pointer to the next node } ; // declare the following: // Pointer to the front of the Queue // Pointer to the rear of the Queue // Number of items in Queue public: Queue () ; // Constructor ~Queue () ; // Destructor // Queue operations void enqueue (el_t); void dequeue (el_t &); void displayAll () const; bool isEmpty() const; // implement the public methods highlighted in bold here int main () { Queue q; el t c; cout << " initial Queue contents" << endl; q. displayAll(); q. dequeue (c); q.enqueue ( 'a'); cout << endl << " Queue contents after adding a: << endl; q. displayAll(); q. enqueue ( 'b' ) ; q.enqueue ( 'c'); q. enqueue ( 'd’); q.enqueue ( 'e' ) ; q.enqueue ( 'f'); cout << endl << " Queue contents after adding b-f: << endl; q.displayAl1(); q. dequeue (c); cout << endl << c << endl; cout << endl << " Queue contents after removing one element: " << endl; q.displayAl1(); q. dequeue (c); cout << endl << Removed element: << c << endl; cout << endl << " Queue contents after removing another element: << endl; q. displayAl1(); q. enqueue ( 'g' ) ; q.enqueue ( 'h’ ); q.enqueue ( 'i'); cout << endl << " Queue contents after adding g, h, i: " << endl; q.displayAl1(); q. dequeue (c); q. dequeue (c); q.dequeue (c); q.dequeue (c); cout << endl << " Queue contents after removing 4 elements: << endl; q. dequeue (c); q. dequeue (c); cout << endl << " final Queue contents << endl; q.displayAl1(); return 0; }

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Class

Object Oriented Programming System (OOPs) is a programming model built on the perception of “objects” that contains data and methods. The major purpose of Object Oriented Programming is to increase the maintainability and flexibility of programs. Object Oriented Programming gets together data and its behavior (methods) in a single location (object) which makes it easier to understand.