Question 1

Which of the following is false?

Accepted Answer

A)   The last element of an array has position number one less than the array size.
B)   The position number contained within square brackets is called a subscript.
C)   A subscript cannot be an expression.
D)   All of the above.E) C) and D)
F) B) and D)

Question 2

Which of the following is not a correct way to initialize the array named n?

Accepted Answer

A) array n{0, 7, 0, 3, 8}; B) array n{0, 7, 0, 3, 8, 2}; C) array n{7}; D) array n{9, 1, 9};E) B) and D) F) B) and C)

Question 3

When using exception handling, place any code that might throw an exception in a __________.

Accepted Answer

A)   catch block
B)   try statement.
C)   throw block.
D)   what statement.E) A) and B)
F) None of the above

Question 4

Referencing elements outside the array bounds with the [] operator:

Accepted Answer

A)   Can result in changes to the value of an unrelated variable.
B)   Is impossible because C++ checks to make sure it does not happen.
C)   Is a syntax error.
D)   Enlarges the size of the array.E) A) and B)
F) None of the above

Question 5

Constant variables:

Accepted Answer

A)   Can be assigned values in executable statements.
B)   Do not have to be initialized when they are declared.
C)   Can be used to specify array sizes, thereby making programs more scalable.
D)   Can be used to specify array sizes, but this makes programs harder to understand.E) A) and B)
F) C) and D)

Question 6

Assume that the array named items contains the integer values 0, 2, 4, 6 and 8. Which of the following set of statements uses the range-based for loop to display each value in items?

Accepted Answer

A)   for (int i = 0; i <items.size() ; ++i)  { cout }
B)   for (int item : items)  { cout }
C)   for (int item : items)  { cout }
D)   for (int item : items.size() ) { cout }E) A) and C)
F) A) and B)

Question 7

In order to calculate the __________ of an array of values, the array values must first be summed.

Accepted Answer

A)   Average.
B)   Minimum.
C)   Maximum.
D)   Distribution.E) None of the above
F) B) and C)

Question 8

You can sort an array with the Standard Library's:

Accepted Answer

A)   sort function.
B)   sort_array function.
C)   array_sort function.
D)   None of the above.E) A) and B)
F) B) and D) A

Question 9

Which of the following is not true of class template vector?

Accepted Answer

A)   The size of a vector can be changed after it is declared.
B)   A vector can be assigned to another vector by using the assignment operator.
C)   A vector object can be initialized with a copy of another vector by invoking the copy constructor.
D)   A vector can store only data of type int.E) A) and C)
F) All of the above

Question 10

An array is not:

Accepted Answer

A)   A consecutive group of memory locations.
B)   Subscripted by integers.
C)   Made up of different data types.
D)   None of the above.E) A) and B)
F) None of the above

Question 11

A double subscripted array declared as array, 3> values; has how many elements?

Accepted Answer

A)   15
B)   13
C)   10
D)   8E) B) and D)
F) A) and B)

Question 12

In a typical nested for loop (not a range-based for loop)  used to process a two-dimensional array, following the end of each execution of the inner for loop:

Accepted Answer

A)   The outer for loop initializes its counter variable.
B)   The outer for loop increments its counter variable.
C)   The inner for loop initializes its counter variable.
D)   The inner for loop increments its counter variable.E) All of the above
F) B) and C) B

Question 13

Which of the following tasks cannot be performed using a range-based for loop?

Accepted Answer

A)   Calculating the product of all the values in an array.
B)   Displaying all even element values in an array.
C)   Incrementing the value stored in each element of the array.
D)   Accessing the element's subscript.E) B) and C)
F) None of the above

Question 14

Using square brackets ([])  to retrieve vector elements __________ perform bounds checking; using member function at to retrieve vector elements __________ perform bounds checking.

Accepted Answer

A)   Does not, does not.
B)   Does not, does.
C)   Does, does not.
D)   Does, does.E) A) and B)
F) None of the above

Question 15

Linear search can be used on:

Accepted Answer

A)   Unsorted arrays.
B)   Sorted arrays.
C)   Integer arrays.
D)   Any of the above.E) None of the above
F) A) and D) D

Question 16

Which of the following does not declare a 2-by-2 array and set all four of its elements to 0?

Accepted Answer

A) array, 2> b; b[0][0] = b[0][1] = b[1][0] = b[1][1] = 0; B) array, 2> b = {0}; C) array, 2> b; for (auto const &row : b) {For (auto &element : row) {Element = 0;}} D) All of the above initialize all four of the array elements to 0.E) A) and D) F) A) and C)

Question 17

Which statement would be used to declare a 10-element integer array c?

Accepted Answer

A) array c<12>; B) array c; C) array<12> c; D) array c;E) B) and D) F) B) and C)

Question 18

Which statement about exception handling is false?

Accepted Answer

A)   Call the exception object's what member function to get the error message that's stored in the exception object.
B)   Bounds checking is performed at execution time with vector member function at, and if a subscript is within the bounds of the array, the member function throws an out_of_bounds exception.
C)   The catch block contains the code that handles an exception if one occurs.
D)   None of the above statements in false.E) None of the above
F) C) and D)

Exam 7: Class Templates Array and Vector; Catching Exceptions

Which of the following is false?

Correct Answer
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Which of the following is not a correct way to initialize the array named n?

Correct Answer
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When using exception handling, place any code that might throw an exception in a __________.

Correct Answer
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Referencing elements outside the array bounds with the [] operator:

Correct Answer
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Constant variables:

Correct Answer
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Assume that the array named items contains the integer values 0, 2, 4, 6 and 8. Which of the following set of statements uses the range-based for loop to display each value in items?

Correct Answer
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In order to calculate the __________ of an array of values, the array values must first be summed.

Correct Answer
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You can sort an array with the Standard Library's:

Correct Answer
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A

Which of the following is not true of class template vector?

Correct Answer
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An array is not:

Correct Answer
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A double subscripted array declared as array<array<int, 5>, 3> values; has how many elements?

Correct Answer
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In a typical nested for loop (not a range-based for loop) used to process a two-dimensional array, following the end of each execution of the inner for loop:

Correct Answer
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B

Which of the following tasks cannot be performed using a range-based for loop?

Correct Answer
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Using square brackets ([]) to retrieve vector elements perform bounds checking; using member function at to retrieve vector elements perform bounds checking.

Correct Answer
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Linear search can be used on:

Correct Answer
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D

Which of the following does not declare a 2-by-2 array and set all four of its elements to 0?

Correct Answer
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Which statement would be used to declare a 10-element integer array c?

Correct Answer
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Which statement about exception handling is false?

Correct Answer
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Exam 7: Class Templates Array and Vector; Catching Exceptions

Which of the following is false?

Correct AnswerverifiedShow Answer

Which of the following is not a correct way to initialize the array named n?

Correct AnswerverifiedShow Answer

When using exception handling, place any code that might throw an exception in a __________.

Correct AnswerverifiedShow Answer

Referencing elements outside the array bounds with the [] operator:

Correct AnswerverifiedShow Answer

Constant variables:

Correct AnswerverifiedShow Answer

Assume that the array named items contains the integer values 0, 2, 4, 6 and 8. Which of the following set of statements uses the range-based for loop to display each value in items?

Correct AnswerverifiedShow Answer

In order to calculate the __________ of an array of values, the array values must first be summed.

Correct AnswerverifiedShow Answer

You can sort an array with the Standard Library's:

Correct AnswerverifiedA

Which of the following is not true of class template vector?

Correct AnswerverifiedShow Answer

An array is not:

Correct AnswerverifiedShow Answer

A double subscripted array declared as array<array<int, 5>, 3> values; has how many elements?

Correct AnswerverifiedShow Answer

In a typical nested for loop (not a range-based for loop) used to process a two-dimensional array, following the end of each execution of the inner for loop:

Correct AnswerverifiedB

Which of the following tasks cannot be performed using a range-based for loop?

Correct AnswerverifiedShow Answer

Using square brackets ([]) to retrieve vector elements __________ perform bounds checking; using member function at to retrieve vector elements __________ perform bounds checking.

Correct AnswerverifiedShow Answer

Linear search can be used on:

Correct AnswerverifiedD

Which of the following does not declare a 2-by-2 array and set all four of its elements to 0?

Correct AnswerverifiedShow Answer

Which statement would be used to declare a 10-element integer array c?

Correct AnswerverifiedShow Answer

Which statement about exception handling is false?

Correct AnswerverifiedShow Answer

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A

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B

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Using square brackets ([]) to retrieve vector elements perform bounds checking; using member function at to retrieve vector elements perform bounds checking.

Correct Answer
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D

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