Structures – Flashcards

1. This describes only the general characteristics of an object. a. initialization b. detailed specification c. initiation d. None of these

2. Which of the following is an example of a C++ primitive data type? a. unsigned short int b. long double c. unsigned char d. All of these e. None of these

3. This is required after the closing brace of the structure declaration. a. square bracket b. period c. semicolon d. colon e. None of these

4. Look at the following statement. bookList[2].publisher[3] = 't'; This statement... a. is illegal in C++. b. will change the publisher's name of the second book in bookList to 't'. c. will store the character 't' in the fourth element of the publisher member of booklist[2]. d. will ultimately result in a runtime error. e. None of these.

5. When a structure is passed _________to a function, its members are not copied. a. by reference b. by value c. Neither of these

6. Passing a structure as a constant reference parameter to a function: a. can potentially result in changes to the structure's members. b. guarantees not to result in changes to the structure's members. c. will always change the structure's members. d. All of these e. None of these

7. This is like a structure, except all members occupy the same memory area. a. array b. union c. structure pointer d. array of pointers e. None of these

8. Members of a(n) ________ union have names, but the union itself has no name. a. anonymous b. dereferenced c. organized d. declared e. None of these

9. If Circle is a structure tag, the statement Circle doSomething(Circle c2) can be the header line for a function that a. determines and returns the area of a circle b. takes a Circle structure as a parameter, does something, and returns a Circle structure c. operates on a constant reference to a Circle structure d. takes two Circle parameters and does something e. None of these

10. Which of the following assigns a value to the hourlyWage member of employee[2]? a. employee[2]->hourlyWage = 50.00; b. employee2.hourlyWage = 7.50; c. hourlyWage[2].employee = 29.75 d. employee[2].hourlyWage = 100.00; e. None of these

12. If an anonymous union is declared globally (outside all functions), it must be: a. empty b. declared static c. explicitly declared "global" d. initialized and used outside any function e. None of these

13. Data types that are created by the programmer are known as: a. variables b. abstract data types (ADT) c. functions d. parameters e. None of these

14. Before a structure can be used, it must be a. declared b. deallocated c. initialized d. All of these e. None of these

15. The name of the structure is referred to as its a. data type b. argument c. parameter d. tag e. None of these

16. This allows you to access structure members. a. structure access operator b. dot operator c. #include directive d. getmember function e. None of these

17. A function ___________ return a structure. a. may b. may not c. will always d. cannot possibly e. None of these

18. A structure pointer contains: a. The address of a structure variable b. The dereferenced address of a structure tag c. The name and address of the structure tag d. The address of a structure tag e. None of these

19. To dereference a structure pointer, the appropriate operator is: a. the ampersand, & b. an asterisk, * c. the structure pointer operator, -> d. the dereference operator, <- e. None of these

20. If a is a structure variable and p, a pointer, is a member of the structure, what will the following statement do? cout << *a.p; a. Output the dereferenced value pointed to by p b. Result in a compiler error c. Output the address stored in p d. Output the value stored in a e. None of these

21. A structure _____________ contain members of the same data type. a. cannot b. can c. shouldn't d. None of these

22. Which of the following statements outputs the value of the gpa member of element 1 of the student array? a. cout << student1.gpa; b. cout << firstStudent.gpa; c. cout << student[1].gpa; d. cout << student1->gpa; e. None of these

23. If Circle is a structure tag, the statement Circle *pcirc; a. declares a structure variable called *pcirc b. declares a structure pointer called pcirc c. is illegal in C++ d. initializes a Circle pointer e. None of these

24. A good reason to pass a structure as a constant reference is: a. to prevent changes to the structure members b. to ensure changes to the structure members c. to slow down the function's execution, preventing errors d. to speed up the function's modification of the structure members e. None of these

25. A declaration for an enumerated type begins with this key word. a. enumerated b. enum_type c. enum d. ENUM

26. With an enumerated data type, the enumerators are stored in memory as a. strings b. integers c. characters d. doubles

27. Look at the following declaration. enum Tree { OAK, MAPLE, PINE }; In memory, what value will the MAPLE enumerator be stored as? a. "MAPLE" b. 2 c. 'M' d. 1 e. 1.0

28. Look at the following declaration. enum Tree { OAK, MAPLE, PINE }; What is the value of the following relational expression? OAK > PINE a. true b. false c. This is an error. You cannot compare enumerators with relational operators.

29. Look at the following structure declaration. struct Employee { string name; int idNum; }; In this declaration, Employee is a. a member b. an array c. a tag d. None of these

30. Look at the following structure declaration. struct Employee { string name; int idNum; }; In this declaration, idNum is a. a member b. an array c. a tag d. None of these