Change your solution for Exercise 12-2 so that it implements the compare() function as a friend of the Integer class. Afterward, ask yourself whether it was really necessary for this function to be a...

Change your solution for Exercise 12-2 so that it implements the compare() function as a friend of the Integer class. Afterward, ask yourself whether it was really necessary for this function to be a friend. Implement a static function print Count() for the Integer class that you created earlier in Exercise 12-2 that outputs the number of Integers in existence. Modify the main() function such that it tests that this number correctly goes up and down when needed.