Why in as3.c do we need to declare and set the head and tail pointers to null? Shouldn't Queue.c keep track and take care of all that for us?

Ø Passenger function must call enqueu function and bus function must call dequeue function. Those are requirements of the assignment. You need to initialize the queue by sending in the addresses of the head and tail and input data itemtype(i.e. &head and &tail &inputnode) to passenger and bus functions.

I thought we should just have to call the enqueue function and pass in the new itemtype we create from reading the input.

Ø The main function calls passenger and bus functions. If anyone’s main function calls enqueue or dequeue functions, one would get 0 for the program.

Why are we having to send in the current head and tail pointers when the linked list should be handling that by itself.

>main function never knows queue data structure. Your program uses passenger and bus functions to hide the details of implementation.

Why is the item in Queue.c an integer and not an itemtype arrivial_struct.

Ø You declare in main function

Itemtype inputnode

To use in passenger and bus functions

But

You use

Itemptr->count and/or itemptr->time

in enqueue and passenger and bus functions.