C++ Ch.9 Pointers

Question 1

Each byte in memory is assigned a unique _________.

Answer 1

Address

Question 2

The ________ operator can be used to determine a variables address.

Answer 2

& (Address Operator)

Question 3

_________ variables are designed to hold addresses.

Answer 3

Pointer

Question 4

The ________ operator can be used to work the variable a pointer points to.

Answer 4

Indirection

Question 5

Array names can be used as ________, and vice versa.

Answer 5

Pointers

Question 6

Creating variables while a program is running is called _________.

Answer 6

Dynamic memory allocation

Question 7

The _______ operator is used to dynamically allocate memory.

Answer 7

new

Question 8

Under old compilers, if the new operator cannot allocate the amount of memory requested it returns ______.

Answer 8

null

Question 9

A pointer that contains the address 0 is called a(n) ________.

Answer 9

null pointer

Question 10

When a program is finished with a chunk of dynamically allocated memory, it should free it with the _______ operator.

Answer 10

delete

Question 11

You should only use pointers with delete that were previously used with ________.

Answer 11

new

Question 12

Each byte of memory is assigned a unique address. (T/F)

Answer 12

True

Question 13

The * operator is used to get the address of a variable. (T/F)

Answer 13

False

Question 14

Pointer variables are designed to hold addresses. (T/F)

Answer 14

True

Question 15

The & symbol is called the indirection operator. (T/F)

Answer 15

False

Question 16

The & operator dereferences a pointer. (T/F)

Answer 16

False

Question 17

When the indirection operator is used with a pointer variable, you are actually working with the value the pointer is pointing to. (T/F)

Answer 17

True

Question 18

Array names cannot be dereferenced with the indirection operator. (T/F)

Answer 18

False

Question 19

When you add a value to a pointer, you are actually adding that number times the size of the data type referenced by the pointer.
(T/F)

Answer 19

True

Question 20

The address operator is not needed to assign an array’s address to pointer. (T/F)

Answer 20

True

Question 21

You can change the address that an array name points to. (T/F)

Answer 21

False

Question 22

Any mathematical operation, including multiplication and division, may be performed on a pointer. (T/F)

Answer 22

False

Question 23

Pointers may be compared using the relational operators. (T/F)

Answer 23

True

Question 24

When used as function parameters, reference variables are much easier to work with than pointers. (T/F)

Answer 24

True

Question 25

The “new” operator dynamically allocates memory. (T/F)

Answer 25

True

Question 26

A pointer variable that has not been initialized is called a null pointer. (T/F)

Answer 26

False

Question 27

The address 0 is generally considered unusable. (T/F)

Answer 27

True

Question 28

In using a pointer with the “delete” operator, it is not necessary for the pointer to have been previously used with the “new” operator.
(T/F)

Answer 28

False