Question 1

What does the following statement do?
Double *num2;

Accepted Answer

A)  Declares a double variable named num2 
B)  Declares and initializes a pointer variable named num2 
C)  Initializes a pointer variable named num2 
D)  Declares a pointer variable named num2 
E)  None of these 
A)  Declares a double variable named num2 
B)  Declares and initializes a pointer variable named num2 
C)  Initializes a pointer variable named num2 
D)  Declares a pointer variable named num2 
E)  None of these

Question 2

Assuming ptr is a pointer variable, what will the following statement output?
Cout << *ptr;

Accepted Answer

A)  the value stored in the variable whose address is contained in ptr 
B)  the string "*ptr" 
C)  the address of the variable whose address is stored in ptr 
D)  the address of the variable stored in ptr 
E)  None of these 
A)  the value stored in the variable whose address is contained in ptr 
B)  the string "*ptr" 
C)  the address of the variable whose address is stored in ptr 
D)  the address of the variable stored in ptr 
E)  None of these

Question 3

The ampersand (&) is used to dereference a pointer variable in C++.

Accepted Answer

A) True 
 B)False

Question 4

Which of the following is true about this statement:
Sum += *array++;

Accepted Answer

A)  This statement is illegal in C++. 
B)  This statement will cause a compiler error. 
C)  This statement assigns the dereferenced pointer's value, then increments the pointer's address. 
D)  This statement increments the dereferenced pointer's value by one, then assign that value. 
E)  None of these 
A)  This statement is illegal in C++. 
B)  This statement will cause a compiler error. 
C)  This statement assigns the dereferenced pointer's value, then increments the pointer's address. 
D)  This statement increments the dereferenced pointer's value by one, then assign that value. 
E)  None of these

Question 5

Which of the following statements displays the address of the variable numb?

Accepted Answer

A) cout > &numb; D) cout << &numb; E) None of these A) cout > &numb; D) cout << &numb; E) None of these

Question 6

A pointer variable may be initialized with

Accepted Answer

A)  any nonzero integer value 
B)  a valid address in the computer's memory 
C)  an address less than zero 
D)  any nonzero number 
E)  None of these 
A)  any nonzero integer value 
B)  a valid address in the computer's memory 
C)  an address less than zero 
D)  any nonzero number 
E)  None of these

Question 7

If you are using an older computer that does not support the C++11 standard, you should initialize pointers with

Accepted Answer

A)  the integer 0 or the value NULL 
B)  the null terminator '\0' 
C)  a nonzero value 
D)  Any of these 
E)  None of these 
A)  the integer 0 or the value NULL 
B)  the null terminator '\0' 
C)  a nonzero value 
D)  Any of these 
E)  None of these

What does the following statement do? Double *num2;

Assuming ptr is a pointer variable, what will the following statement output? Cout << *ptr;

The ampersand (&) is used to dereference a pointer variable in C++.

Which of the following is true about this statement: Sum += *array++;

Which of the following statements displays the address of the variable numb?

A pointer variable may be initialized with

If you are using an older computer that does not support the C++11 standard, you should initialize pointers with

Introduction to Computers and Programming

Introduction to C

Expressions and Interactivity

Making Decisions

Loops and Files

Functions

Arrays and Vectors

Searching and Sorting Arrays

Characters, C-Strings, and More About the String Class

Structured Data

Advanced File Operations

Introduction to Classes

More About Classes

Inheritance, Polymorphism, and Virtual Functions

Exceptions and Templates

The Standard Template Library

Linked Lists

Stacks and Queues

Recursion

Binary Trees

Filters

Exam 9: Pointers

What does the following statement do? Double *num2;

Assuming ptr is a pointer variable, what will the following statement output? Cout << *ptr;

The ampersand (&) is used to dereference a pointer variable in C++.

Which of the following is true about this statement: Sum += *array++;

Which of the following statements displays the address of the variable numb?

A pointer variable may be initialized with

If you are using an older computer that does not support the C++11 standard, you should initialize pointers with

Introduction to Computers and Programming

Introduction to C

Expressions and Interactivity

Making Decisions

Loops and Files

Functions

Arrays and Vectors

Searching and Sorting Arrays

Characters, C-Strings, and More About the String Class

Structured Data

Advanced File Operations

Introduction to Classes

More About Classes

Inheritance, Polymorphism, and Virtual Functions

Exceptions and Templates

The Standard Template Library

Linked Lists

Stacks and Queues

Recursion

Binary Trees

Filters