c++ short answer questions: skip #9,10,13

7. The keyword virtual allows us to write code which execute allows us to write code which executes differently depending on type. This lets us achieve when designing interfaces, why do we list a virtual destructor when we would get a non-virtual one for free? What kind of problem would we face if a subclass that stores dynamically allocated memory inherits a non-virtual destructor? 9. How does a deep copy of a data structure differ from a shallow copy of a data structure? 10. What happens if an exception is thrown but never caught and handled? 11. Suppose that we pass a LinkedList into a function with the following signature: void do something (LinkedList list Param); What kind of constructor is called in order to construct the variable listParam? Be more specific than the LinkedList constructor." 12. What happens if a Node* that is currently pointing to nullptr tries to call getEntry? (Assume that this code is executed on the Linux lab machines) 13. When does a class' templated type become well-defined? (in other words, the T in template )