3. Write output of the following code. [15] a. myqueue; n1 = 7; n2 = 9; n3 = 11; myqueue.enqueue(n2); myqueue.enqueue(nl); myqueue.enqueue(n1 = n3); n2=myqueue.dequeue(); myqueue.enqueue(n3 * n3); myqueue.enqueue(n2); myqueue.enqueue(0); n1=myqueue.dequeue(); cout