Computer Science - Object Oriented Programming Using C++ MCQs Part 11

1. A function whose purpose is to send messages to other functions is known as a _____

A.
dispatcher

B.
courier

C.
messenger

D.
sender

 Answer Option A

2. With commercial classes, the function source code is usually________

A.
printed on high-quality paper

B.
poorly written

C.
provided on a disk

D.
provided in object form

 Answer Option D

3. The type of value that a function sends back to the function that calls it is known as its _____

A.
type

B.
return value

C.
reference data

D.
sentinel

 Answer Option B

4. Assume that a program includes the short *agePtr = NULL; statement. The name of the pointer is _____

A.
*agePtr

B.
agePtr

 Answer Option B

5. Which of the following are never inherited?

A.
public data members

B.
constructor functions

C.
void functions

D.
overloaded + operators

 Answer Option B

6. The expression c = i++ causes

A. the value of i assigned to c and then i incremented by 1

B. i to be incremented by 1 and then the value of i assigned to c

C. value of i assigned to c

D. i to be incremented by 1

E. None of the above

 Answer Option A

7. An identifier in C

A. is a name of a thing such as variable and function

B. is made up of letters, numerals, and the underscore

C. can contain both uppercase and lowercase letters

D. All of the above

E. None of the above

 Answer Option D

8. Which of the following creates a String named constant called partNo, whose value is AB45?

A. const char[4] partNo = "AB45";

B. const char[5] partNo = 'AB45';

C. const char[5] partNo = "AB45";

D. const char partNo[5] = "AB45";

E. None of the above

 Answer Option D

9. The bitwise AND operator is represented by the symbol

A. ^

B. &

C. &&

D. >>

E. None of the above

 Answer Option B

10. The exclusive OR operator gives the result 1 when

A. both the bits are 0

B. one bit is 0 and the other is 1

C. both the bits are 1

D. no hard and fast rule

E. None of the above

 Answer Option B

11. A function's purpose is to print customer data. Which of the following is the best name for this function?

A. pcd(). It's short for "print customer data" and takes few keystrokes

B. Printcustomerdata(). It states everything the function will do

C. printCustomer(). It states the function's purpose and is easy to read

D. lastFunction(). It is the final function called in most programs, and this name identifies the function's timing

 Answer Option C

12. The function strcmp("Jose", "JOSE") will return _____

A. - 1

B. 0

C. 1

 Answer Option C

13. A pointer to void can hold pointers to

A. char type

B. int type

C. float type

D. any data type

 Answer Option D

14. Which of the following is the extraction operator?

A. >>

B. <<

C. //

D. /*

E. both (a) and (b)

 Answer Option A

15. The function whose prototype is void getData(Item &thing); receives

A. a pointer to a structure

B. a reference to a structure

C. a copy of a structure

D. nothing

 Answer Option B

16. When a multidimensional array is accessed, each array index is

A. separated by commas

B. surrounded by brackets and separated by commas

C. separated by commas and surrounded by brackets

D. surrounded by brackets

 Answer Option D

17. To create a variable, you must assign _____ to it

A. a data type

B. a name

C. both a data type and a name

D. the word var

 Answer Option C

18. You indicate a variable is a pointer variable by placing a(n) _____ in front of the variable's name

A. asterisk

B. ampersand

C. dollar sign

D. exclamation point

 Answer Option A

19. A function can make_________

A. one throw

B. one throw of each scalar type

C. one throw of each programmer-defined type

D. as many throws of as many types as necessary

 Answer Option D

20. A default exception block must be placed _____

A. first among the catch blocks

B. last among the catch blocks

C. globally, at the top of the file

D. at the end of all code in the program

 Answer Option B

21. Which of the following control structures is used in every program?

A. repetition

B. selection

C. sequence

D. switching

 Answer Option C

22. In the C language, a string is assigned to the

A. char type of variable

B. string type of variable

C. conversion specification %s

D. All of the above

 Answer Option A

23. Which of the following statements declares a one-dimensional Character array named item that consists of five elements?

A. char item[0 to 4] = "";

B. char item[0 to 5] = "";

C. char item[4] = "";

D. char item[5] = "";

E. string item[5] = ' ';

 Answer Option D

24. A derived class may also be called a

A. subclass

B. super class

C. parent class

D. derived class

 Answer Option A

25. The main() function is always

A. a called function

B. a calling function

C. recursive function

D. used at the end of the program

E. None of the above

 Answer Option B

26. Variables that are known only to the function in which they are declared are called _____ variables

A. global

B. local

C. main

D. separate

E. void

 Answer Option B

27. In the expression p --> val,p is a(n)

A. address

B. pointer

C. structure

D. header

 Answer Option B

28. In a template function, _____ argument is generic, or parameterized

A. no

B. exactly one

C. at least one

D. more than one

 Answer Option C

29. Object-oriented programmers primarily focus on _________

A. procedures to be performed

B. the step-by-step statements needed to solve a problem

C. objects and the tasks that must be performed with those objects

D. the physical orientation of objects within a program

 Answer Option C

30. You define a structure type globally because

A. you save many lines of code by not rewriting an identical structure definition in each function that uses it

B. you will never change its definition

C. it is required in C++

D. all of the above

 Answer Option A

31. The standard output stream, which refers to the computer screen, is called

A. cin

B. cout

C. stin

D. stout

E. None of the above

 Answer Option B

32. Which of the following operators is the equality operator?

A. !=

B. =

C. ==

D. ->>

E. <>

 Answer Option C

33. In C++, you use _____ to perform standard input and output operations

A. characters

B. sequences

C. streams

D. tests

 Answer Option C

34. Values that are used to end loops are referred to as _____ values

A. end

B. finish

C. sentinel

D. stop

 Answer Option C

35. Which of the following flowchart symbols represents the if selection structure?

A. diamond

B. hexagon

C. oval

D. parallelogram

E. rectangle

 Answer Option A

36. Two or more arrays whose elements are related by their position (subscript) in the arrays are called _____ arrays

A. horizontal

B. paired

C. parallel

D. related

E. vertical

 Answer Option C

37. Assume that a program creates and initializes a Short Integer variable named age and a pointer named agePtr, to which it assigns the address of the age variable. Which of the following statements will assign the number 21 to the age variable?

A. age = 21;

B. *age = 21;

C. agePtr = 21;

D. *agePtr = 21;

E. both (a) and (d)

 Answer Option E

38. The statement fwrite ( (char*)&objl, sizeof(objl) );

A. writes the member functions of objl to fl

B. writes the data in objl to fl

C. writes the member functions and me data of obj 1 to fl

D. writes the address of objl to fl

 Answer Option B

39. The body of a C++ function is surrounded by _____

A. parentheses

B. angle brackets

C. curly brackets

D. square brackets

 Answer Option C

40. Which of the following type casts will convert an Integer variable named amount to a Double type?

A. (double) amount

B. (int to double) amount

C. int to double(amount)

D. int (amount) to double

 Answer Option A

41. The loosest type of coupling is

A. data coupling

B. control coupling

C. external coupling

D. pathological coupling

 Answer Option A

42. Which of the following is a string literal constant?

A. "Visual C++"

B. "137.45"

C. "A"

D. "2,365"

E. All of the above

 Answer Option E

43. Which of the following, if any, are valid names for variables?

A. class

B. friend

C. #OnHand

D. void

E. None of the above are valid names for variables

 Answer Option E

44. A child class _____ exist if there is no parent class

A. must

B. may

C. cannot

D. can

 Answer Option C

6. The expression c = i++ causes

A. the value of i assigned to c and then i incremented by 1

B. i to be incremented by 1 and then the value of i assigned to c

C. value of i assigned to c

D. i to be incremented by 1

E. None of the above

 Answer Option A

7. An identifier in C

A. is a name of a thing such as variable and function

B. is made up of letters, numerals, and the underscore

C. can contain both uppercase and lowercase letters

D. All of the above

E. None of the above

 Answer Option D

8. Which of the following creates a String named constant called partNo, whose value is AB45?

A. const char[4] partNo = "AB45";

B. const char[5] partNo = 'AB45';

C. const char[5] partNo = "AB45";

D. const char partNo[5] = "AB45";

E. None of the above

 Answer Option D

9. The bitwise AND operator is represented by the symbol

A. ^

B. &

C. &&

D. >>

E. None of the above

 Answer Option B

10. The exclusive OR operator gives the result 1 when

A. both the bits are 0

B. one bit is 0 and the other is 1

C. both the bits are 1

D. no hard and fast rule

E. None of the above

 Answer Option B