Question: Using C++: Implement the following specification for an integer function inthe client program that returns the number of items in a queue. Thequeue is unchanged.

Using C++: Implement the following specification for an integer function inthe client program that returns the number of items in a queue. Thequeue is unchanged. You may use any of the member functions of QueType, but you may not assume any knowledge of the queue's implementation.

int GetLength(QueType queue)

Function: Determines the number of items in the queue.

Precondition: queue has been initialized.

Postconditions: queue is unchanged

Function value = number of items in queue.

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