ADTs, Data Structures, and Problem Solving with C++ 2nd Edition by Larry Nyhoff

Exercise 2

For Exercises 1-4, assume that q is a queue implemented as described in this section (using a linear linked list), with QueueElement = char. Draw a diagram like that in this section that pictures the queue q after the code segment is executed, or indicate why an error occurs.
? q.enqueue('X'); q.enqueue('Y'); q.enqueue('Z'); while (!q.empty()) { ch = q.front(); q.dequeue(); }