Question 1

Which of the following correctly declares a user-defined data type that defines a pointer to a float?

Accepted Answer

A)  float* floatPtr ; 
B)  typedef float* floatPtr; 
C)  typedef floatPtr *float; 
D)  typedef floatPtr* float 
A)  float* floatPtr ; 
B)  typedef float* floatPtr; 
C)  typedef floatPtr *float; 
D)  typedef floatPtr* float B

Question 2

Which of the following is not true?

Accepted Answer

A)  a pointer can be assigned the address of an array 
B)  an array can be assigned the value in a pointer variable 
C)  if a pointer points to an array, it can be used in place of the array name 
D)  if a pointer points to an array, the pointer does not know how many elements are in the array. 
A)  a pointer can be assigned the address of an array 
B)  an array can be assigned the value in a pointer variable 
C)  if a pointer points to an array, it can be used in place of the array name 
D)  if a pointer points to an array, the pointer does not know how many elements are in the array. B

Question 3

Which of the following statements correctly prints out the value that is in the memory address that the pointer p1 is pointing to?

Accepted Answer

A)  cout << &p1; 
B)  cout << p1; 
C)  cout << int* p1; 
D)  cout << *p1; 
A)  cout << &p1; 
B)  cout << p1; 
C)  cout << int* p1; 
D)  cout << *p1; D

Question 4

Which of the following assigns to p1 the pointer to the address of value?

Accepted Answer

A)  *p1=&value; 
B)  p1=value; 
C)  p1=&value; 
D)  &p1 = *value; 
A)  *p1=&value; 
B)  p1=value; 
C)  p1=&value; 
D)  &p1 = *value;

Question 5

Declare a pointer variable named ptr to an integer.

Accepted Answer

The answer of Declare a pointer variable named ptr to...

Question 6

Dynamically created variables have no name.

Accepted Answer

A) True 
 B)False

Question 7

What is the output of the following code?
Int *p1, *p2;
P1 = new int;
P2 = new int;
*p1=11;
*p2=0;
P2=p1;
Cout << *p1 <<" " << *p2 << endl;

Accepted Answer

A)  11 0 
B)  0 11 
C)  11 11 
D)  0 0 
A)  11 0 
B)  0 11 
C)  11 11 
D)  0 0

Question 8

Even though pointers point to addresses which are integers, you can not assign an integer to a pointer variable.

Accepted Answer

A) True 
 B)False

Question 9

Given that p1 is a pointer variable of the string class, which of the following are legal statements?

Accepted Answer

A)  p1 = new int; 
B)  cout << *p1; 
C)  p1 = new char[10]; 
D)  *p1 = new string; 
E)  B and D 
A)  p1 = new int; 
B)  cout << *p1; 
C)  p1 = new char[10]; 
D)  *p1 = new string; 
E)  B and D

Question 10

Assuming that the pointer variable p1 is of the correct type and size is an integer with some value > 1, which of the following declarations are legal?

Accepted Answer

A)  p1 = new string[size]; 
B)  p1 = new ifstream[size]; 
C)  p1 = new char[size*size]; 
D)  A and B 
E)  A, B and C 
A)  p1 = new string[size]; 
B)  p1 = new ifstream[size]; 
C)  p1 = new char[size*size]; 
D)  A and B 
E)  A, B and C

Question 11

In which case would you consider using a dynamic array?

Accepted Answer

A)  If the array is small, and the size is known before the program runs. 
B)  If the program needs to get the size of the array from the user 
C)  If the array size is big, but known at compile time 
D)  You should always use a dynamic array 
A)  If the array is small, and the size is known before the program runs. 
B)  If the program needs to get the size of the array from the user 
C)  If the array size is big, but known at compile time 
D)  You should always use a dynamic array

Question 12

If p1 is an integer pointer that is pointing to memory location 1001, and an integer takes 4 bytes, then p1+1) evaluates to:

Accepted Answer

A)  1002 
B)  1004 
C)  1005 
D)  Unknown 
A)  1002 
B)  1004 
C)  1005 
D)  Unknown

Question 13

When you return a dynamic array to the freestore, you must include the number of elements in the array.

Accepted Answer

A) True 
 B)False

Question 14

Write the code to declare a dynamic array of strings use the string pointer variable p1) that has as many elements as the variable arraySize.

Accepted Answer

p1 = new s

Question 15

What is the output of the following code fragment?
Float *p1;
P1 = new float3);
Cout << *p1;

Accepted Answer

A)  3.0 
B)  unknown, the address p1 points to is not initialized 
C)  unknown, the code is illegal, p1 points to a dynamic array 
D)  0.0 
A)  3.0 
B)  unknown, the address p1 points to is not initialized 
C)  unknown, the code is illegal, p1 points to a dynamic array 
D)  0.0

Question 16

Write the code to return the dynamic memory pointed to by p1 to the freestore.

Accepted Answer

The answer of Write the code to return the dynamic...

Question 17

Given that a typedef for IntPtr defines a pointer to an integer, what would be the correct declaration for a function that expects a reference to an integer pointer?

Accepted Answer

A)  void f1 IntPtr& ptr); 
B)  void f1 IntPtr&* ptr); 
C)  void f1 IntPtr*& ptr); 
D)  All of the above 
A)  void f1 IntPtr& ptr); 
B)  void f1 IntPtr&* ptr); 
C)  void f1 IntPtr*& ptr); 
D)  All of the above

Question 18

The size of dynamic arrays must be declared at compile time.

Accepted Answer

A) True 
 B)False

Question 19

If a program requires a dynamically allocate two-dimensional array, you would allocate the memory by using

Accepted Answer

A)  p1 = new int*[numRows]; forint i=0; i < numRows; i++)
P1[i] = new int[numColumns]; 
B)  p1 = new int*[numRows][numColumns]; 
C)  p1 = new[numRows][numColumns]int; 
D)  none of the above 
A)  p1 = new int*[numRows]; forint i=0; i < numRows; i++)
P1[i] = new int[numColumns]; 
B)  p1 = new int*[numRows][numColumns]; 
C)  p1 = new[numRows][numColumns]int; 
D)  none of the above

Question 20

The size of a dynamic array is defined at ___________

Accepted Answer

The answer of The size of a dynamic array is...

Which of the following correctly declares a user-defined data type that defines a pointer to a float?

Which of the following is not true?

Which of the following statements correctly prints out the value that is in the memory address that the pointer p1 is pointing to?

Which of the following assigns to p1 the pointer to the address of value?

Declare a pointer variable named ptr to an integer.

Dynamically created variables have no name.

What is the output of the following code? Int p1, p2; P1 = new int; P2 = new int; p1=11; p2=0; P2=p1; Cout << p1 <<" " << p2 << endl;

Even though pointers point to addresses which are integers, you can not assign an integer to a pointer variable.

Given that p1 is a pointer variable of the string class, which of the following are legal statements?

Assuming that the pointer variable p1 is of the correct type and size is an integer with some value > 1, which of the following declarations are legal?

In which case would you consider using a dynamic array?

If p1 is an integer pointer that is pointing to memory location 1001, and an integer takes 4 bytes, then p1+1) evaluates to:

When you return a dynamic array to the freestore, you must include the number of elements in the array.

Write the code to declare a dynamic array of strings use the string pointer variable p1) that has as many elements as the variable arraySize.

What is the output of the following code fragment? Float p1; P1 = new float3); Cout << p1;

Write the code to return the dynamic memory pointed to by p1 to the freestore.

Given that a typedef for IntPtr defines a pointer to an integer, what would be the correct declaration for a function that expects a reference to an integer pointer?

The size of dynamic arrays must be declared at compile time.

If a program requires a dynamically allocate two-dimensional array, you would allocate the memory by using

The size of a dynamic array is defined at ___________

Introduction to Computer and C++ Programming

C++ Basics

More Flow of Control

Procedural Abstraction and Functions That Return a Value

Functions for All Sub Tasks

Io Streams As an Introduction to Objects and Classes

Arrays

Strings and Vectors

Defining Classes

Friends, Overloaded Operators, and Arrays in Classes

Separate Compilation and Namespaces

Pointers and Linked Lists

Recursion

Inheritance

Exception Handling

Templates

Standard Template Library

Filters

Exam 9: Pointers and Dynamic Arrays

Which of the following correctly declares a user-defined data type that defines a pointer to a float?

Which of the following is not true?

Which of the following statements correctly prints out the value that is in the memory address that the pointer p1 is pointing to?

Which of the following assigns to p1 the pointer to the address of value?

Declare a pointer variable named ptr to an integer.

Dynamically created variables have no name.

What is the output of the following code? Int *p1, *p2; P1 = new int; P2 = new int; *p1=11; *p2=0; P2=p1; Cout << *p1 <<" " << *p2 << endl;

Even though pointers point to addresses which are integers, you can not assign an integer to a pointer variable.

Given that p1 is a pointer variable of the string class, which of the following are legal statements?

Assuming that the pointer variable p1 is of the correct type and size is an integer with some value > 1, which of the following declarations are legal?

In which case would you consider using a dynamic array?

If p1 is an integer pointer that is pointing to memory location 1001, and an integer takes 4 bytes, then p1+1) evaluates to:

When you return a dynamic array to the freestore, you must include the number of elements in the array.

Write the code to declare a dynamic array of strings use the string pointer variable p1) that has as many elements as the variable arraySize.

What is the output of the following code fragment? Float *p1; P1 = new float3); Cout << *p1;

Write the code to return the dynamic memory pointed to by p1 to the freestore.

Given that a typedef for IntPtr defines a pointer to an integer, what would be the correct declaration for a function that expects a reference to an integer pointer?

The size of dynamic arrays must be declared at compile time.

If a program requires a dynamically allocate two-dimensional array, you would allocate the memory by using

The size of a dynamic array is defined at ___________

Introduction to Computer and C++ Programming

C++ Basics

More Flow of Control

Procedural Abstraction and Functions That Return a Value

Functions for All Sub Tasks

Io Streams As an Introduction to Objects and Classes

Arrays

Strings and Vectors

Defining Classes

Friends, Overloaded Operators, and Arrays in Classes

Separate Compilation and Namespaces

Pointers and Linked Lists

Recursion

Inheritance

Exception Handling

Templates

Standard Template Library

Filters

What is the output of the following code? Int p1, p2; P1 = new int; P2 = new int; p1=11; p2=0; P2=p1; Cout << p1 <<" " << p2 << endl;

What is the output of the following code fragment? Float p1; P1 = new float3); Cout << p1;