main()
{

//declare a pointer to a queue
    queue *Q1 = new queue;

// declare a variable to hold return value of GetFront().
    int x;

// Add five elements to the (back of the) queue

    cout<<"Adding 10\n";
    Q1->Enqueue(10);

    cout<<"Adding 20\n";
    Q1->Enqueue(20);

    cout<<"Adding 30\n";
    Q1->Enqueue(30);

    cout<<"Adding 40\n";
    Q1->Enqueue(40);

    cout<<"Adding 50\n";
    Q1->Enqueue(50);

// Delete the Front element of the queue, i.e., 10

    Q1->Dequeue();

// Output the Front element of the queue, i.e., 20

    x=Q1->GetFront();
    cout<<x;

// Empty the queue

    Q1->MakeEmpty();

// Add element 70 to the (back of the) queue

    Q1->Enqueue(70);

// Output the Front element of the queue i.e., 70

    x=Q1->GetFront();
    cout<<x;

}