const int MAX_STRING = 50;
typedef char nameType[MAX_STRING+1];

// wait list - people waiting for certain titles
typedef struct waitNode* waitPtrType;
struct waitNode
{  nameType    Who;
   waitPtrType Next;
};  // end struct

// stock item
class itemClass
{
public:
//  . . .
private:
   nameType Title;
   int      Have, Want;
};  // end class

// inventory list - list of stock items
typedef struct stockNode* stockPtrType;
struct stockNode
{  itemClass    Item;
   waitPtrType  WaitHead, WaitTail;
   stockPtrType Next;
};  // end struct