Question 1

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

Question 2

Linear search can be used on:

Accepted Answer

A)  Unsorted arrays. 
B)  Sorted arrays. 
C)  Integer arrays. 
D)  Any of the above. 
A)  Unsorted arrays. 
B)  Sorted arrays. 
C)  Integer arrays. 
D)  Any of the above. D

Question 3

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. 
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. B

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. 
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.

Question 5

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 <<items[i] <<endl;
} 
B)  for (int item : items) { cout <<items[item] <<endl;
} 
C)  for (int item : items) { cout <<item <<endl;
} 
D)  for (int item : items.size()){ cout <<item <<endl;
} 
A)  for (int i = 0; i <items.size(); ++i) { cout <<items[i] <<endl;
} 
B)  for (int item : items) { cout <<items[item] <<endl;
} 
C)  for (int item : items) { cout <<item <<endl;
} 
D)  for (int item : items.size()){ cout <<item <<endl;
}

Question 6

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}; 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};

Question 7

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. 
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.

Question 8

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. 
A)  Does not, does not. 
B)  Does not, does. 
C)  Does, does not. 
D)  Does, does.

Question 9

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. 
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.

Question 10

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. 
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.

Question 11

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

Question 12

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

Accepted Answer

A)  15 
B)  13 
C)  10 
D)  8 
A)  15 
B)  13 
C)  10 
D)  8

Question 13

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. 
A)  catch block 
B)  try statement. 
C)  throw block. 
D)  what statement.

Question 14

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. 
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.

Question 15

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. 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.

Question 16

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. 
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.

Question 17

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. 
A)  Average. 
B)  Minimum. 
C)  Maximum. 
D)  Distribution.

Question 18

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; A) array c<12>; B) array c; C) array<12> c; D) array c;

Exam 7: Class Templates Array and Vector; Catching Exceptions

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

Linear search can be used on:

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:

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

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?

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

Which statement about exception handling is false?

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

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

Which of the following is false?

An array is not:

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

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

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

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

Constant variables:

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

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

Introduction to Computers and C++

Introduction to C Programming; Inputoutput and Operators

Introduction to Classes, Objects and Strings

Control Statements, Assignment, and Operators

Control Statements, Logical Operators

Functions and an Introduction to Recursion

Pointers and Pointer-Based Strings

Classes: a Deeper Look; Throwing Exceptions

Operator Overloading; String and Array Objects

Object-Oriented Programming: Inheritance

Object-Oriented Programming: Polymorphism

Stream Inputoutput: a Deeper Look

File Processing

Standard Library Containers and Iterators

Standard Library Algorithms

Exception Handling: a Deeper Look

Introduction to Custom Templates

Custom Templatized Data Structures

Searching and Sorting

Class String and String Stream Processing

Bits, Characters, C Strings and Structs

Other Topics

C++11 Additional Features

Filters

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