/** Listing 1-1.
	@file BagInterface.h */
	#ifndef _BAG_INTERFACE
	#define _BAG_INTERFACE
	#include
	using namespace std;
	template
	class BagInterface
	{
	public:
	/** Gets the current number of entries in this bag.
	@return The integer number of entries currently in the bag. */
	virtual int getCurrentSize() const = 0;
	/** Sees whether this bag is empty.
	@return True if the bag is empty, or false if not. */
	virtual bool isEmpty() const = 0;
	/** Adds a new entry to this bag.
	@post If successful, newEntry is stored in the bag and
	the count of items in the bag has increased by 1.
	@param newEntry The object to be added as a new entry.
	@return True if addition was successful, or false if not. */
	virtual bool add(const ItemType& newEntry) = 0;
	/** Removes one occurrence of a given entry from this bag,
	if possible.
	@post If successful, anEntry has been removed from the bag
	and the count of items in the bag has decreased by 1.
	@param anEntry The entry to be removed.
	@return True if removal was successful, or false if not. */
	virtual bool remove(const ItemType& anEntry) = 0;
	/** Removes all entries from this bag.
	@post Bag contains no items, and the count of items is 0. */
	virtual void clear() = 0;
	/** Counts the number of times a given entry appears in bag.
	@param anEntry The entry to be counted.
	@return The number of times anEntry appears in the bag. */
	virtual int getFrequencyOf(const ItemType& anEntry) const = 0;
	/** Tests whether this bag contains a given entry.
	@param anEntry The entry to locate.
	@return True if bag contains anEntry, or false otherwise. */
	virtual bool contains(const ItemType& anEntry) const = 0;
	/** Empties and then f ills a given vector with all entries that
	are in this bag.
	@return A vector containing all the entries in the bag. */
	virtual vector toVector() const = 0;
	}; // end BagInterface
	#endif

1. Imagine that you have just left a store with a bag of groceries. You are concerned that the fragile items will not survive the trip home, so when you reach your car, you place those items into their own bag. If Bag is a class of bags, write a full C++ class with implementation that remove all the items from storeBag and place them into one of two new bags, as follows: Place ll occurrences of bread and eggs into fragileBag, and all other items into groceryBag. e empty. Assume that grocery items are represented by strings. Hint: you can use the bagInterface class as your base class for the bags