Question 1

When the less than (<) operator is used between two pointer variables, the expression is testing whether

Accepted Answer

the address of the first variable comes before the address of the second variable in the computer's memory

Question 2

When using the new operator with an older compiler, it is good practice to

Accepted Answer

test the pointer for the NULL address

Question 3

Not all arithmetic operations may be performed on pointers. For example, you cannot __ or __ a pointer

Accepted Answer

multiply or divide

Question 4

The statement cin>> *num3

Accepted Answer

stores the keyboard input into the variable pointed to by num3

Question 5

When this is placed in front of a variable name, it returns the address of that variable

Accepted Answer

& ampersand

Question 6

A pointer may be initialized with

Accepted Answer

the address of an existing object

Question 7

The statement int *ptr= new int;

Accepted Answer

assigns an address to the variable named ptr

Question 8

When you work with a dereferenced pointer, you are actually working with:

Accepted Answer

the actual value of the variable whose address is stored in the pointer variable

Question 9

The __ and __ operators can be used to increment or decrement a pointer variable

Accepted Answer

++,--

Question 10

Look at the following statement: sum=*array++; This statement...

Accepted Answer

assigns the dereferenced pointer's value, then increments the pointer's address

Question 11

Which statement display the address of the variable num1?

Accepted Answer

cout<<&num1

Question 12

A pointer variable may be initialized with

Accepted Answer

any address in the computer's memory

Question 13

The following statement has the same meaning as __. int *ptr;

Accepted Answer

int* ptr;

Question 14

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

Accepted Answer

the value stored in the variable whose address is contained in ptr

Question 15

Which of the following statements is not valid C++ code?

Accepted Answer

All of these are invalid (int ptr=&num1; int ptr=int *num1;float num1=*ptr2; )

Question 16

Dynamic memory allocation occurs

Accepted Answer

when a new variable is created at runtime

Question 17

When you pass a pointer as an argument to a function, you must

Accepted Answer

none of these (redeclare the pointer pointer variable in the function call, dereference the pointer variable in the function prototype, use the #include<func_ptr.h> statement, not dereference the pointer in the function's body)

Question 18

A function may return a pointer, but the programmer must ensure that the pointer

Accepted Answer

still points to a valid object after the function ends

Question 19

Look at the following statement. int *ptr; In this statement, what does the word int mean

Accepted Answer

ptr is a pointer variable that will store the address of an integer variable

Question 20

These can be used as pointers

Accepted Answer

array names

Question 21

If a variable uses more that one byte of memory, for pointer purposes its address is

Accepted Answer

the address of the first byte of storage

Question 22

What will the following statement output? cout<<&num1;

Accepted Answer

The memory address of the variable called num1

Question 23

Which of the following statements deletes memory that has been dynamically allocated for an array

Accepted Answer

delete[] array;

Question 24

Every byte in the computer's memory is assigned a unique

Accepted Answer

address

Question 25

The __, also known as the address operator, returns the memory address of a variable

Accepted Answer

ampersand (&)

Question 26

A pointer variable is designed to store

Accepted Answer

a memory address

Question 27

Use the delete operator only on pointers that were

Accepted Answer

created with the new operator

Question 28

With pointer variables, you can__ manipulate data stored in other variables

Accepted Answer

indirectly

Question 29

What does the following statement do? double *num2;

Accepted Answer

declares a pointer variable named num2

Question 30

The contents of pointer variables may be changed with mathematical statements that perform

Accepted Answer

addition and subtraction

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