Question 1

Comparing pointers and performing pointer arithmetic on them is meaningless unless:

Accepted Answer

A)  They point to elements of the same array. 
B)  You are trying to compare and perform pointer arithmetic on the values to which they point. 
C)  They point to arrays of equal size. 
D)  They point to arrays of the same type. 
A)  They point to elements of the same array. 
B)  You are trying to compare and perform pointer arithmetic on the values to which they point. 
C)  They point to arrays of equal size. 
D)  They point to arrays of the same type. A

Question 2

A pointer can not be assigned to:

Accepted Answer

A)  Another pointer of the same type without using the cast operator. 
B)  A pointer to void without using the cast operator. 
C)  A pointer of a type other than its own type and void without using the cast operator. 
D)  Any other pointer by using the cast operator. 
A)  Another pointer of the same type without using the cast operator. 
B)  A pointer to void without using the cast operator. 
C)  A pointer of a type other than its own type and void without using the cast operator. 
D)  Any other pointer by using the cast operator. C

Question 3

A function that modifies an array by using pointer arithmetic such as ++ptr to process every value of the array should have a parameter that is:

Accepted Answer

A)  A nonconstant pointer to nonconstant data. 
B)  A nonconstant pointer to constant data. 
C)  A constant pointer to nonconstant data. 
D)  A constant pointer to constant data. 
A)  A nonconstant pointer to nonconstant data. 
B)  A nonconstant pointer to constant data. 
C)  A constant pointer to nonconstant data. 
D)  A constant pointer to constant data. A

Question 4

A string array:

Accepted Answer

A)  Stores an actual string in each of its elements. 
B)  Can only provide access to strings of a certain length. 
C)  Is actually an array of pointers. 
D)  Is always less memory efficient than an equivalent double-subscripted array. 
A)  Stores an actual string in each of its elements. 
B)  Can only provide access to strings of a certain length. 
C)  Is actually an array of pointers. 
D)  Is always less memory efficient than an equivalent double-subscripted array.

Question 5

Given that k is an integer array starting at location 2000, kPtr is a pointer to k and each integer is stored in 4 bytes of memory, what location does kPtr + 3 point to?

Accepted Answer

A)  2003 
B)  2006 
C)  2012 
D)  2024 
A)  2003 
B)  2006 
C)  2012 
D)  2024

Question 6

Which of the following is false for pointer-based strings?

Accepted Answer

A)  A string may include letters, digits and various special characters (i.e., +, -, *). 
B)  A string in C++ is an array of characters ending in the null character ('\0'). 
C)  String literals are written inside of single quotes. 
D)  A string may be assigned in a declaration to either a character array or a variable of type char *. 
A)  A string may include letters, digits and various special characters (i.e., +, -, *). 
B)  A string in C++ is an array of characters ending in the null character ('\0'). 
C)  String literals are written inside of single quotes. 
D)  A string may be assigned in a declaration to either a character array or a variable of type char *.

Question 7

Which of the following is false about a function to which a built-in array is being passed?

Accepted Answer

A)  It always knows the size of the built-in array that is being passed. 
B)  It is being passed the address of the first element in the built-in array. 
C)  It is able to modify the values stored in the built-in array. 
D)  The built-in array's name is used as an argument in the function call. 
A)  It always knows the size of the built-in array that is being passed. 
B)  It is being passed the address of the first element in the built-in array. 
C)  It is able to modify the values stored in the built-in array. 
D)  The built-in array's name is used as an argument in the function call.

Question 8

Which of the following best describes the array name n in the declaration int n[10];?

Accepted Answer

A)  n is a nonconstant pointer to nonconstant data. 
B)  n is a nonconstant pointer to constant data. 
C)  n is a constant pointer to nonconstant data. 
D)  n is a constant pointer to constant data. 
A)  n is a nonconstant pointer to nonconstant data. 
B)  n is a nonconstant pointer to constant data. 
C)  n is a constant pointer to nonconstant data. 
D)  n is a constant pointer to constant data.

Question 9

Assuming that t is an array and tPtr is a pointer to that array, which expression refers to the address of element 3 of the array?

Accepted Answer

A)  *(tPtr + 3) 
B)  tPtr[3] 
C)  &t[3] 
D)  *(t + 3) 
A)  *(tPtr + 3) 
B)  tPtr[3] 
C)  &t[3] 
D)  *(t + 3)

Question 10

(*max)(num1, num2, num3);:

Accepted Answer

A)  Is the header for function max. 
B)  Is a call to the function pointed to by max. 
C)  Is the prototype for function max. 
D)  Is a declaration of a pointer to a function called max. 
A)  Is the header for function max. 
B)  Is a call to the function pointed to by max. 
C)  Is the prototype for function max. 
D)  Is a declaration of a pointer to a function called max.

Question 11

The & operator can be applied to:

Accepted Answer

A)  constants. 
B)  string literals. 
C)  lvalues. 
D)  rvalues. 
A)  constants. 
B)  string literals. 
C)  lvalues. 
D)  rvalues.

Question 12

Which of the following statements about pointer initialization and values is false?

Accepted Answer

A)  Prior C++11, the value specified for a null pointer was 0 or NULL. 
B)  When 0 is assigned to a pointer, it's converted to a pointer of the appropriate type. 
C)  The value 0 is the only integer value that can be assigned directly to a pointer variable without first casting the integer to a pointer type. 
D)  In the new standard, you should use the constant null_ptr to initialize a pointer instead of 0 or NULL. 
A)  Prior C++11, the value specified for a null pointer was 0 or NULL. 
B)  When 0 is assigned to a pointer, it's converted to a pointer of the appropriate type. 
C)  The value 0 is the only integer value that can be assigned directly to a pointer variable without first casting the integer to a pointer type. 
D)  In the new standard, you should use the constant null_ptr to initialize a pointer instead of 0 or NULL.

Question 13

Which of the following can have a pointer as an operand?

Accepted Answer

A)  ++ 
B)  *= 
C)  % d . / 
A)  ++ 
B)  *= 
C)  % d . /

Question 14

All of the following can cause a fatal execution-time error except:

Accepted Answer

A)  Dereferencing a pointer that has not been assigned to point to a specific address. 
B)  Dereferencing a pointer that has not been initialized properly. 
C)  Dereferencing a null pointer. 
D)  Dereferencing a variable that is not a pointer. 
A)  Dereferencing a pointer that has not been assigned to point to a specific address. 
B)  Dereferencing a pointer that has not been initialized properly. 
C)  Dereferencing a null pointer. 
D)  Dereferencing a variable that is not a pointer.

Question 15

Pointers may be assigned which of the following values?

Accepted Answer

A)  Any integer values. 
B)  An address. 
C)  nullptr. 
D)  Both (b) and (c). 
A)  Any integer values. 
B)  An address. 
C)  nullptr. 
D)  Both (b) and (c).

Question 16

Consider the following function: void reverse(char *string1, const char *string2)
{
Int stringsize{sizeof(string1)/sizeof(char)};
*(string1 + stringsize - 1) = '\0';
String1 = string1 + stringsize - 2;
For (; *string2 != '\0'; string1--, string2++) {
*string1 = *string2;
}
}
What technique does the function use to refer to array elements?

Accepted Answer

A)  Array subscript notation. 
B)  Pointer/offset notation where the pointer is actually the name of the array. 
C)  Pointer subscript notation. 
D)  Pointer/offset notation. 
A)  Array subscript notation. 
B)  Pointer/offset notation where the pointer is actually the name of the array. 
C)  Pointer subscript notation. 
D)  Pointer/offset notation.

Question 17

Which of the following gives the number of elements in the array int r[10]?

Accepted Answer

A)  sizeof r 
B)  sizeof (*r) 
C)  sizeof r / sizeof (int) 
D)  sizeof (*r) / sizeof (int) 
A)  sizeof r 
B)  sizeof (*r) 
C)  sizeof r / sizeof (int) 
D)  sizeof (*r) / sizeof (int)

Question 18

getline(superstring, 30); is equivalent to which of the following?

Accepted Answer

A)  cin.getline(superstring, 30, '\0'); 
B)  cin.getline(superstring, 30, '
'); 
C)  cin.getline(superstring, 30, '\s'); 
D)  cin.getline(superstring, 30, '	'); 
A)  cin.getline(superstring, 30, '\0'); 
B)  cin.getline(superstring, 30, '
'); 
C)  cin.getline(superstring, 30, '\s'); 
D)  cin.getline(superstring, 30, '	');

Question 19

Given a built-in array of ints named values, which of the following statements would sort the array?

Accepted Answer

A)  sort(values.begin(), values.end()); 
B)  sort(values.array_begin(), values.array_end()); 
C)  sort(begin(values), end(values)); 
D)  sort(array_begin(values), array_end(values)); 
A)  sort(values.begin(), values.end()); 
B)  sort(values.array_begin(), values.array_end()); 
C)  sort(begin(values), end(values)); 
D)  sort(array_begin(values), array_end(values));

Question 20

Which of the following is not a correct way to initialize a built-in array?

Accepted Answer

A)  int n[5]{0, 7, 0, 3, 8, 2}; 
B)  int n[]{0, 7, 0, 3, 8, 2}; 
C)  int n[5]{7}; 
D)  int n[5]{9, 1, 9}; 
A)  int n[5]{0, 7, 0, 3, 8, 2}; 
B)  int n[]{0, 7, 0, 3, 8, 2}; 
C)  int n[5]{7}; 
D)  int n[5]{9, 1, 9};

Exam 8: Pointers and Pointer-Based Strings

Comparing pointers and performing pointer arithmetic on them is meaningless unless:

A pointer can not be assigned to:

A function that modifies an array by using pointer arithmetic such as ++ptr to process every value of the array should have a parameter that is:

A string array:

Given that k is an integer array starting at location 2000, kPtr is a pointer to k and each integer is stored in 4 bytes of memory, what location does kPtr + 3 point to?

Which of the following is false for pointer-based strings?

Which of the following is false about a function to which a built-in array is being passed?

Which of the following best describes the array name n in the declaration int n[10];?

Assuming that t is an array and tPtr is a pointer to that array, which expression refers to the address of element 3 of the array?

(*max)(num1, num2, num3);:

The & operator can be applied to:

Which of the following statements about pointer initialization and values is false?

Which of the following can have a pointer as an operand?

All of the following can cause a fatal execution-time error except:

Pointers may be assigned which of the following values?

Which of the following gives the number of elements in the array int r[10]?

getline(superstring, 30); is equivalent to which of the following?

Given a built-in array of ints named values, which of the following statements would sort the array?

Which of the following is not a correct way to initialize a built-in array?

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

Class Templates Array and Vector; Catching Exceptions

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

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