Queue Implementation Using Linked List C++
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#include<iostream> using namespace std; struct Node { int data; Node *next ; }; class Queue { Node *front, *rear; public: Queue() { front = rear = NULL; } void Enqueue(int elem) // insertion values from rear side { Node *newnode; newnode = new Node; newnode->data = elem; newnode->next = NULL; if(front == NULL) front = rear = newnode; else { rear->next = newnode; rear = newnode; } } void Dequeue() // delete values from front side { Node *temp; if(front == NULL) cout<<"Queue is Empty"; else { temp= front; front = front->next; delete temp; } } void show() { Node *temp; temp= front; while(temp!=NULL) { cout<<temp->data<<"\t"; temp = temp->next; } cout<<endl; } }; int main() { Queue T4TUTORIALS; T4TUTORIALS.Enqueue(10); cout<<"Queue after inserting the 1st values is :"; T4TUTORIALS.show(); T4TUTORIALS.Enqueue(4); cout<<"Queue after inserting the 2nd value is :"; T4TUTORIALS.show(); T4TUTORIALS.Dequeue(); cout<<"Queue after deleting a value from the queue:"; T4TUTORIALS.show(); } |