Question

Code fragment 2: template <class T> Tplus slancio, T12) ( Tret: Tet - ol +12 Tetun Tet; } Code fragment 3: Problem 1 (10 points)-True/False Submit a document called Answers.doc Answer the following true/false questions. You must correctly state WIIY your answer is true or false in order to receive credit class Popcorn std::string flavor protected: float price Code fragment 1: public class Employee friend class Movie_gcer Popcorn slumstring Daver, float price) public: static int total employees; int employee_id; this flavor-flavor this priceprice. > Employee() employec_id=total_employecs; cout<<"This employee's id: "<<employee Id<<endl; total employees++; } 1. If ei and e2 are both Employee objects, we can say el.total_employees++; 2. Since total employees is static, we can access it alone (meaning the line totul employees=3; would be a valid line of code) 3. Even if we have an Employee object, we MUST access total employees with the class directly because it is static. 4. T can be any type except a string. 5. I can be any type except a boolean 6. If ni was an integer and n2 was a string the function would not work. 7. We can determine from the code alone what type nl and n2 arc, 8. If mi is a Movie_goer object and poppy is a private function in the Popcorn class, mi can access poppyO. 9. If p1 is a Popcorn object and movie_rental() is a private function in the Movie class, pi cao access movie_rental(). 10. If Caramel_popcorn is a publically inherited class from Popcorn, it can access private Movie_goer members.

Answer 1

ANSWERS

1. False. We cannot access the total_employees data member yet because, being a static data member, it has to be explicitly defined with a new line of code to be accessible, such as writing int Employee::total_employees = 0; Only then we will be able to do work with it.

2. False. Although we can access the static data member without having to call any object, we still need to use the scope resolution operator to be able to acces it alone.

3. False. Even if it is good practice to access static data members directly from a class without the use of any object, it is syntactically OK to access the data member through a class object as well

4. False. T can be ANY type including a string.

5. False. T can be ANY type including a bool.

6. True. Although T can be any type, it is mandatory for the final type of T to be consistent throughout the function.

7. True. There is no other way to determine the type of T

8. False. m1 cannot access private popcorn functin poppy() function directly. Instead, m1 needs to have an object of popcorn class inside it which can be used to access private poppy() function. This is because not m1, but Movie_goer class has the privilage of accessing private members of the popcorn class through the use of popcorn objects.

9. False. This is because friendship is not mutual. If class Movie_goer is a friend of class popcorn, popcorn is not neccessarily a friend of class Movie_goer

10. False. This is because friendship is not inherited.