// apqueue.h

#ifndef _APQUEUE_H
#define _APQUEUE_H

template <class itemType>
class apqueue
{
public:

// constructors/destructor
   apqueue( );                           // construct empty queue
   apqueue( const apqueue & q );         // copy constructor
   ~apqueue( );                          // destructor

// assignment
   const apqueue & operator = ( const apqueue & rhs );

// accessors
   const itemType & front( )   const;     // return front (no dequeue)
   bool	            isEmpty( ) const;     // return true if empty else false
   int              length( )  const;     // return number of elements

// modifiers
   void enqueue( const itemType & item ); // insert item (at rear)
   void dequeue( );                       // remove first element
   void dequeue( itemType & item );       // combine front and dequeue
   void makeEmpty( );                     // make queue empty

private:
   . . . 
};

#include "apqueue.cpp"
#endif