EXAM C++ review

10. A variable or expression listed in a call to a function is called the ____. a. formal parameter b. actual parameter c. data type d. type of the function

10. ANS: B actual parameter

100. In row order form, the ____. a. first row is stored first b. first row is stored last c. first column is stored first d. first column is stored last

100. ANS: A first row is stored first

11. A variable listed in a function call is known as a(n) ____ parameter. A variable list in a header is known as a(n) ____ parameter. a. actual; actual b. formal; formal c. actual; formal d. formal; actual

11. ANS: C actual; formal

12. What value is returned by the following return statement? int x = 5; return x + 1; a. 0 b. 5 c. 6 d. 7

12. ANS: C 6

13. Given the following function int strange(int x, int y) { if (x > y) return x + y; else return x - y; } what is the output of the following statement:? cout << strange(4, 5) << endl; a. -1 b. 1 c. 9 d. 20

13. ANS: A -1

14. Given the following function int next(int x) { return (x + 1); } what is the output of the following statement? cout << next(next(5)) << endl; a. 5 b. 6 c. 7 d. 8

14. ANS: C 7

16. A function prototype is ____. a. a definition, but not a declaration b. a declaration and a definition c. a declaration, but not a definition d. a comment line

16. ANS: C a declaration, but not a definition

17. Given the function prototype: float test(int, int, int); which of the following statements is legal? a. cout << test(7, test(14, 23)); b. cout << test(test(7, 14), 23); c. cout << test(14, 23); d. cout << test(7, 14, 23);

17. ANS: D cout << test(7, 14, 23);

18. Given the following function prototype: double tryMe(double, double);, which of the following statements is valid? Assume that all variables are properly declared. a. cin >> tryMe(x); b. cout << tryMe(2.0, 3.0); c. cout << tryMe(tryMe(double, double), double); d. cout << tryMe(tryMe(float, float), float);

18. ANS: B cout << tryMe(2.0, 3.0);

19. Given the function prototype: double testAlpha(int u, char v, double t); which of the following statements is legal? a. cout << testAlpha(5, 'A', 2); b. cout << testAlpha( int 5, char 'A', int 2); c. cout << testAlpha('5.0', 'A', '2.0'); d. cout << testAlpha(5.0, "65", 2.0);

19. ANS: A cout << testAlpha(5, 'A', 2);

20. Which of the following function prototypes is valid? a. int funcTest(int x, int y, float z){} b. funcTest(int x, int y, float){}; c. int funcTest(int, int y, float z) d. int funcTest(int, int, float);

20. ANS: D int funcTest(int, int, float);

21. Which of the following function prototypes is valid? a. int funcExp(int x, float v); b. funcExp(int x, float v){}; c. funcExp(void); d. int funcExp(x);

21. ANS: A int funcExp(int x, float v);

22. Given the following function prototype: int myFunc(int, int); which of the following statements is valid? Assume that all variables are properly declared. a. cin >> myFunc(y); b. cout << myFunc(myFunc(7, 8), 15); c. cin >> myFunc('2', '3'); d. cout << myFunc(myFunc(7), 15);

22. ANS: B cout << myFunc(myFunc(7, 8), 15);

23. The statement: return 8, 10; returns the value ____. a. 8 b. 10 c. 18 d. 80

23. ANS: B 10

24. The statement: return 37, y, 2 * 3; returns the value ____. a. 2 b. 3 c. y d. 6

24. ANS: D 6

25. The statement: return 2 * 3 + 1, 1 + 5; returns the value ____. a. 2 b. 3 c. 6 d. 7

25. ANS: C 6

26. Suppose that printHeading is a function without any parameters. Which of the following is a valid function heading? a. void printHeading(); b. void printHeading() c. void printHeading(noParameters); d. void printHeading(void)

26. ANS: B void printHeading()

27. Which of the following is a legal C++ function definition? a. void funcTest(int& u, double& v) { cout << u << " " << v << endl; } b. void funcTest(int& u, double& v); { cout << u << " " << v << endl; } c. void funcTest(int& u, double& v) ( cout << u << " " << v << endl ) d. void funcTest(int& u, double& v) [ cout << u << " " << v << endl; ]

27. ANS: A void funcTest(int& u, double& v) { cout << u << " " << v << endl; }

28. There are two types of ____ parameters: value parameters and reference parameters. a. actual b. formal c. active d. passive

28. ANS: B formal

29. If an & is attached after the data type of a formal parameter, then the formal parameter is a ____. a. value parameter b. reference parameter c. global variable d. default variable

29. ANS: B reference parameter

30. A void function accomplish has three parameters: a parameter u of type int, a parameter v of type double, and a parameter letter of type char. The parameters u and letter need to pass their values out of the function and the parameter v is to only receive the value from the calling environment. Which of the following is a correct function heading? a. void accomplish(int& u, double v, char& letter) b. void accomplish(int u, double& v, char letter) c. void accomplish(int& u, double v, char& letter); d. void accomplish(int u, double& v, char letter);

30. ANS: A void accomplish(int& u, double v, char& letter)

31. Consider the following definition. void funBbeta(int& one, double two) { ... } Based on this function definition, which of the following statements is valid? a. one is a value parameter and two is a reference parameter. b. one is a reference parameter and two is a value parameter. c. one and two are reference parameters. d. one and two are value parameters.

31. ANS: B one is a reference parameter and two is a value parameter.

32. Which of the following is a legal C++ function definition? a. void funcAlpha(int u, double v &) { cout << u << " " << v << endl; } b. void funcAlpha(int #, double #) { cout << u << " " << v << endl; } c. void funcAlpha(int &, double &) { cout << u << " " << v << endl; } d. void funcAlpha(int u, double& v) { cout <<< " " << v << endl; }

32. ANS: D void funcAlpha(int u, double& v) { cout <<< " " << v << endl; }

33. Suppose that you are given the following function definition: void printSomeThing(int x) { for (int i = 1; i <= x, i++) cout << "* "; cout << endl; } What is the output of the following statements? printSomeThing(1); printSomeThing(2); printSomeThing(3); a. ****** b. * * * * * * c. * * * * * * d. * * * * * * * * * *

33. ANS: B * * * * * *

34. During program execution, a(n) ____ parameter manipulates the data stored in its own memory space. a. formal value b. actual c. active d. passive

34. ANS: A formal value

35. When a function is called, the value of the ____ parameter is copied into the corresponding formal parameter. a. reference b. default c. actual d. static

35. ANS: C actual

36. ____ parameters are useful when you want to return more than one value from a function. a. Default b. Value c. Reference d. Automatic

36. ANS: C Reference

37. If a formal parameter is a non-constant reference parameter, its corresponding actual parameter during a function call must be a(n) ____. a. default value b. value c. expression d. variable

37. ANS: D variable

38. You can declare a(n) ____ parameter as a constant by using the keyword const. a. absolute b. relative c. reference d. actual

38. ANS: C reference

39. Suppose that you have the following function. void mystery(int& one, int two) { int temp temp = one; one = two; two = temp; } What are the values of x and y after the following statements? (Assume that variables are properly declared.) x = 10; y = 15; mystery(x, y); a. x = 10; y = 10 b. x = 10; y = 15 c. x = 15; y = 10 d. x = 15; y = 15

39. ANS: D x = 15; y = 15

4. Assume the following. static_cast('a') = 97 static_cast('A') = 65 The output of the statement: cout << static_cast(tolower('B')) << endl; is ____. a. 65 b. 67 c. 96 d. 98

4. ANS: D 98

40. Consider the following function definition. void strange(int& u, char& ch) { int a; a = u++; u = 2 * u; a = static_cast(ch); a++; ch = static_cast(a); } What are the values of one and letter after the following statements execute? int one =5; char letter = 'A'; strange(one, letter); a. one = 5; letter = 'A' b. one = 10; letter = 'A' c. one = 10; letter = 'B' d. one = 12; letter = 'B'

40. ANS: D one = 12; letter = 'B'

41. What is the output of the following program? #include < iostream > using namespace std; void one(int x, int& y); void two(int& s, int t); int main() { int u = 1; int v = 2; one(u, v); cout << u << " " << v << endl; two(u, v); cout << u << " " << v << endl; return 0; } void one(int x, int& y) { int a; a = x; x = y; y = a; } void two(int& s, int t) { int b; b = s - t; s = t + b + 2; t = 4 * b; } a. 1 1 3 1 b. 1 2 1 3 c. 1 2 2 3 d. 2 2 2 3

41. ANS: A 1 1 3 1

42. The ____ of an identifier refers to where in the program an identifier is accessible (visible). a. area b. lifetime c. scope d. locus

42. ANS: C scope

43. ____ identifiers are not accessible outside of the function (block). a. Local b. Global c. Internal d. External

43. ANS: A Local

44. What is the output of the following C++ code? int alpha = 5; int beta = 10; alpha = alpha + 5; { int alpha = 20; beta = beta + 5; } cout << alpha << " " << beta << endl; a. 10 10 b. 20 15 c. 10 15 d. 15 10

44. ANS: C 10 15

45. In C++, the scope resolution operator is ____. a. | b. . c. : d. ::

45. ANS: D ::

46. In C++ the keyword ____ can be used to access a global variable declared after the definition of a function. a. extern b. global c. default d. external

46. ANS: A extern

47. To declare w as an external variable of type int inside the function, the function must contain which statement? a. external w b. external int w; c. extern w d. extern int w;

47. ANS: D extern int w;

48. Memory for ____ variables remains allocated as long as the program executes. a. actual b. formal c. global d. local

48. ANS: C PTS: 1

49. A variable for which memory is allocated at block entry and deallocated at block exit is called a(n) ____ variable. a. side effect b. static c. automatic d. global

49. ANS: C PTS: 1

5. The output of the statement: cout << pow(3.0, 2.0) + 5 << endl; is ____. a. 11.0 b. 12.0 c. 13.0 d. 14.0

5. ANS: D 14.0

50. ____ a function refers to the creation of several functions with the same name. a. Redefining b. Overnaming c. Overlapping d. Overloading

50. ANS: D PTS: 1

51. Suppose that you have the following declaration. enum cars {FORD, GM, TOYOTA, HONDA}; cars domesticCars = FORD; The statement domesticCars = static_cast<cars>(domesticCars + 1); sets the value of domesticCars to ____. a. FORD b. GM c. TOYOTA d. HONDA

51. ANS: B GM

52. Consider the declaration enum sports {BASKETBALL, FOOTBALL, HOCKEY, BASEBALL, SOCCER}; which of the following statements is true? a. SOCCER-- = BASEBALL b. BASEBALL++ = SOCCER c. HOCKEY + FOOTBALL < SOCCER d. FOOTBALL <= SOCCER

52. ANS: D FOOTBALL <= SOCCER

53. What is the output of the following code? enum courses {ALGEBRA, BASIC, PASCAL, PHILOSOPHY, ANALYSIS}; courses registered; registered = ALGEBRA; cout << registered << endl; a. ALGEBRA b. 0 c. 1 d. "ALGEBRA"

53. ANS: B 0

54. Which of the following statements declares the studentGrade variable? a. enum studentGrade {A, B, C, D, F}; b. enum int {A, B, C, D, F} studentGrade; c. enum studentGrade {A, B, C, D, F} grades; d. enum grades {A, B, C, D, F} studentGrade;

54. ANS: D enum grades {A, B, C, D, F} studentGrade;

55. Which of the following statements creates an anonymous type? a. enum grades {A, B, C, D, F}; b. enum grades {}; c. enum {}; d. enum {A, B, C, D, F} grades;

55. ANS: D enum {A, B, C, D, F} grades;

56. In C++, you can create aliases to a previously defined data type by using the ____ statement. a. typedef b. using c. namespace d. alias

56. ANS: A typedef

57. In C++, ____ is a reserved word. a. deftype b. typedef c. typecc d. alias

57. ANS: B typedef

58. Which of the following is a valid C++ statement? a. typedef integer; b. typedef int; c. typedef int integer; d. typedef integer int;

58. ANS: C typedef int integer;

59. In July ____, the ANSI/ISO Standard C++ was officially approved. a. 1996 b. 1998 c. 1999 d. 2000

59. ANS: B 1998

6. The output of the statement: cout << pow(2.0, pow(3.0, 1.0)) << endl; is ____. a. 6.0 b. 7.0 c. 8.0 d. 9.0

6. ANS: C 8.0

60. In C++, ____ is called the scope resolution operator. a. . b. ? c. : d. ::

60. ANS: D ::

61. The scope of a namespace member is local to the ____. a. function b. block c. file d. namespace

61. ANS: D namespace

62. Given the following code namespace globalType { void printResult(); } which of the following statements is needed to access printResult? a. globalType.printResult(); b. globalType.printResult; c. globalType::printResult(); d. globalType:printResult();

62. ANS: C globalType::printResult();

63. Which of the following statements is used to simplify the accessing of all globalType namespace members? a. using globalType; b. using namespace globalType:all; c. using namespace globalType::all; d. using namespace globalType;

63. ANS: D using namespace globalType;

64. The identifiers in the system-provided header files such as iostream, cmath, and iomanip are defined in the namespace ____. a. cctype b. stdl c. std d. stdlib

64. ANS: C std

65. Before using the data type string, the program must include the header file ____. a. enum b. iostream c. string d. std

65. ANS: C string

66. Suppose that str1, str2, and str3 are string variables. After the following statements execute, the value of str3 is "____". str1 = "abc"; str2 = "xyz"; str3 = str1 + '-' + str2; a. abc b. xyz c. abc-xyz d. xyz-abc

66. ANS: C abc-xyz

67. Suppose str = "xyzw";. After the statement str[2] = 'Y'; The value of str is "____". a. xyzw b. xYzw c. xyYw d. xzYw

67. ANS: C xyYw

68. The data type string has a named constant, ____, associated with it. a. string::size b. string::size_type c. string::pos d. string::npos

68. ANS: D string::npos

69. Suppose str = "ABCDEFGHI". The output of the statement cout << str.length() << endl; is ____. a. 7 b. 8 c. 9 d. 10

69. ANS: C 9

7. Functions that do not have a return type are called ____ functions. a. zero b. null c. void d. empty

7. ANS: C void

70. The length of the string "Hello There. " is ____. a. 11 b. 12 c. 13 d. 14

70. ANS: C 13

71. Consider the following statements. string str = "ABCDEFD"; string::size_type position; After the statement position = str.find('D'); executes, the value of position is ____. a. 3 b. 4 c. 6 d. 7

71. ANS: A 3

72. Considering the statement string str = "Gone with the wind";, the output of the statement cout << str.find("the") << endl; is ____. a. 9 b. 10 c. 11 d. 12

72. ANS: B 10

73. Consider the following statements. string str1 = "ABCDEFGHIJKLM"; string str2; After the statement str2 = str1.substr(1,4); executes, the value of str2 is "____". a. ABCD b. BCDE c. BCD d. CDE

73. ANS: B BCDE

74. Consider the following statements. string str1 = "Gone with the wind"; string str2; After the statement str2 = str1.substr(5,4); executes, the value of str2 is "____". a. Gone b. with c. the d. wind

74. ANS: B with

75. The ____ function is used to interchange the contents of two string variables. a. iterator b. traverse c. swap d. change

75. ANS: C swap

76. Which of the following statements declares alpha to be an array of 25 components of the type int? a. int alpha[25]; b. int array alpha[25]; c. int alpha[2][5]; d. int array alpha[25][25];

76. ANS: A int alpha[25];

77. Assume you have the following declaration char nameList[100];. Which of the following ranges is valid for the index of the array nameList? a. 0 through 99 b. 0 through 100 c. 1 through 100 d. 1 through 101

77. ANS: A 0 through 99

78. Assume you have the following declaration int beta[50];. Which of the following is a valid element of beta? a. beta['2'] b. beta['3'] c. beta[0] d. beta[50]

78. ANS: C beta[0]

79. Assume you have the following declaration double salesData[1000];. Which of the following ranges is valid for the index of the array salesData? a. 0 through 999 b. 0 through 1000 c. 1 through 1001 d. 1 through 1000

79. ANS: A 0 through 999

8. The heading of the function is also called the ____. a. title b. function signature c. function head d. function header

8. ANS: D function header

80. Suppose that list is an array of 10 components of type int. Which of the following codes correctly outputs all the elements of list? a. for (int j = 1; j < 10; j++) cout << list[j] << " "; cout << endl; b. for (int j = 0; j <= 9; j++) cout << list[j] << " "; cout << endl; c. for (int j = 1; j < 11; j++) cout << list[j] << " "; cout << endl; d. for (int j = 1; j <= 10; j++) cout << list[j] << " "; cout << endl;

80. ANS: B for (int j = 0; j <= 9; j++) cout << list[j] << " "; cout << endl;

81. Suppose that sales is an array of 50 components of type double. Which of the following correctly initializes the array sales? a. for (int 1 = 1; j <= 49; j++) sales[j] = 0; b. for (int j = 1; j <= 50; j++) sales[j] = 0; c. for (int j = 0; j <= 49; j++) sales[j] = 0.0; d. for (int j = 0; j <= 50; j++) sales[j] = 0.0;

81. ANS: C for (int j = 0; j <= 49; j++) sales[j] = 0.0;

82. What is the output of the following C++ code? int list[5] = {0, 5, 10, 15, 20}; int j; for (j = 0; j < 5; j++) cout << list[j] << " "; cout << endl; a. 0 1 2 3 4 b. 0 5 10 15 c. 0 5 10 15 20 d. 5 10 15 20

82. ANS: C 0 5 10 15 20

83. What is the value of alpha[2] after the following code executes? int alpha[5]; int j; for (j = 0; j < 5; j++) alpha[j] = 2 * j + 1; a. 1 b. 4 c. 5 d. 6

83. ANS: C 5

84. What is the output of the following C++ code? int alpha[5] = {2, 4, 6, 8, 10}; int j; for (j = 4; j >= 0; j--) cout << alpha[j] << " "; cout << endl; a. 2 4 6 8 10 b. 4 3 2 1 0 c. 8 6 4 2 0 d. 10 8 6 4 2

84. ANS: D 10 8 6 4 2

85. What is the output of the following C++ code? int list[5] = {0, 5, 10, 15, 20}; int j; for (j = 1; j <= 5; j++) cout << list[j] << " "; cout << endl; a. 0 5 10 15 20 b. 5 10 15 20 0 c. 5 10 15 20 20 d. Code contains index out-of-bounds

85. ANS: D Code contains index out-of-bounds

86. Suppose that gamma is an array of 50 components of type int and j is an int variable. Which of the following for loops sets the index of gamma out of bounds? a. for (j = 0; j <= 49; j++) cout << gamma[j] << " "; b. for (j = 1; j < 50; j++) cout << gamma[j] << " "; c. for (j = 0; j <= 50; j++) cout << gamma[j] << " "; d. for (j = 0; j <= 48; j++) cout << gamma[j] << " ";

86. ANS: C PTS: 1

87. Consider the following declaration int alpha[5] = {3, 5, 7, 9, 11};. Which of the following is equivalent to this statement? a. int alpha[] = {3, 5, 7, 9, 11}; b. int alpha[] = {3 5 7 9 11}; c. int alpha[5] = [3, 5, 7, 9, 11]; d. int alpha[] = (3, 5, 7, 9, 11);

87. ANS: A int alpha[] = {3, 5, 7, 9, 11};

88. Consider the following declaration int alpha[3];. Which of the following input statements correctly inputs values into alpha? a. cin >> alpha >> alpha >> alpha; b. cin >> alpha[0] >> alpha[1] >> alpha[2]; c. cin >> alpha[1] >> alpha[2] >> alpha[3]; d. cin >> alpha

88. ANS: B cin >> alpha[0] >> alpha[1] >> alpha[2];

89. In C++, the null character is represented as ____. a. '\0' b. "\0" c. '0' d. "0"

89. ANS: A '\0'

9. Given the following function prototype: int test(float, char); which of the following statements is valid? a. cout << test(12, &); b. cout << test("12.0", '&'); c. int u = test(5.0, '*'); d. cout << test('12', '&');

9. ANS: C int u = test(5.0, '*');

90. Which of the following correctly declares name to be a character array and stores "William" in it? a. char name[6] = "William"; b. char name[7] = "William"; c. char name[8] = "William"; d. char name[8] = 'William';

90. ANS: C char name[8] = "William";

91. Consider the following declaration char str[15];. Which of the following statements stores "Blue Sky" into str? a. str = "Blue Sky"; b. str[15] = "Blue Sky"; c. strcpy(str, "Blue Sky"); d. strcpy("Blue Sky");

91. ANS: C strcpy(str, "Blue Sky");

92. Consider the following declaration. char charArray[51]; char discard; Assume that the input is: Hello There! How are you? What is the value of discard after the following statements execute? cin.get(charArray, 51); cin.get(discard); a. discard = ' ' (Space) b. discard = '!' c. discard = '\n' d. discard = '\0'

92. ANS: C discard = '\n'

93. Consider the following statement: double alpha[10][5];. The number of components of alpha is ____. a. 15 b. 50 c. 100 d. 150

93. ANS: B 50

94. Consider the statement int list[10][8];. Which of the following about list is true? a. list has 10 rows and 8 columns. b. list has 8 rows and 10 columns. c. list has a total of 18 components. d. list has a total of 108 components.

94. ANS: A list has 10 rows and 8 columns.

95. Consider the following statement: int alpha[25][10];. Which of the following statements about alpha is true? a. Rows of alpha are numbered 0...24 and columns are numbered 0...9. b. Rows of alpha are numbered 0...24 and columns are numbered 1...10. c. Rows of alpha are numbered 1...24 and columns are numbered 0...9. d. Rows of alpha are numbered 1...25 and columns are numbered 1...10.

95. ANS: A Rows of alpha are numbered 0...24 and columns are numbered 0...9.

96. Which of the following correctly declares and initializes alpha to be an array of four rows and three columns and the component type is int? a. int alpha[4][3] = {{0,1,2} {1,2,3} {2,3,4} {3,4,5}}; b. int alpha[4][3] = {0,1,2; 1,2,3; 2,3,4; 3,4,5}; c. int alpha[4][3] = {0,1,2: 1,2,3: 2,3,4: 3,4,5}; d. int alpha[4][3] = {{0,1,2}, {1,2,3}, {2,3,4}, {3,4,5}};

96. ANS: D int alpha[4][3] = {{0,1,2}, {1,2,3}, {2,3,4}, {3,4,5}};

97. After the following statements execute, what are the contents of matrix? int matrix[3][2]; int j, k; for (j = 0; j < 3; j++) for (k = 0; k < 2; k++) matrix[j][k] = j + k; a. 0 0 1 1 2 2 b. 0 1 2 3 4 5 c. 0 1 1 2 2 3 d. 1 1 2 2 3 3

97. ANS: C 0 1 1 2 2 3

98. Given the following declaration, int j; int sum; double sale[10][7]; which of the following correctly finds the sum of the elements of the fifth row of sale? a. sum = 0; for(j = 0; j < 7; j++) sum = sum + sale[5][j]; b. sum = 0; for(j = 0; j < 7; j++) sum = sum + sale[4][j]; c. sum = 0; for(j = 0; j < 10; j++) sum = sum + sale[5][j]; d. sum = 0; for(j = 0; j < 10; j++) sum = sum + sale[4][j];

98. ANS: B sum = 0; for(j = 0; j < 7; j++) sum = sum + sale[4][j];

99. Given the following declaration, int j; int sum; double sale[10][7]; which of the following correctly finds the sum of the elements of the fourth column of sale? a. sum = 0; for(j = 0; j < 7; j++) sum = sum + sale[j][3]; b. sum = 0; for(j = 0; j < 7; j++) sum = sum + sale[j][4]; c. sum = 0; for(j = 0; j < 10; j++) sum = sum + sale[j][4]; d. sum = 0; for(j = 0; j < 10; j++) sum = sum + sale[j][3];

99. ANS: D sum = 0; for(j = 0; j < 10; j++) sum = sum + sale[j][3];

3. The output of the statement cout << tolower('$') << endl; is ____. a. '$' b. '0' c. '1' d. An error, because you cannot use tolower with '$'.

ANS: A '$'

2. To use the predefined function tolower, the program must include the header file ____. a. cctype b. iostream c. cmath d. cstdlib

ANS: A cctype

15. Which statement below about prototypes and headers is true? a. Parameter names must be listed in the prototype, but not necessarily in the header. b. Prototypes end with a semicolon, but headers do not. c. Headers should come before prototypes. d. Headers end with a semicolon, but prototypes do not.

ANS: B Prototypes end with a semicolon, but headers do not.

1. The standard header file for the abs(x)function is ____. a.< cmath > b.< ioinput > c.< cctype >d.< cstdlib >

ANS: D < cstdlib >