12. The Clock class is declared below. Declare a Clock object on the heap and print out its time.

     class Clock { private: int hours, minutes; public: 

     Clock(int, int); 

     string getTime(); }; 

13. What does this command accomplish? delete [] xarr;

14. Write a function sumarray() that takes an array of integers and its size and uses pointer arithmetic (in a loop) to add up its contents, returning the sum.

15. In the following code, what is the type of filename? auto filename = "hello.cpp";