Question 1

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

Accepted Answer

is pointing to an object that is still valid after the return of the function

Question 2

A pointer may be initialized with ________.

Accepted Answer

the address of an existing object of the appropriate type

Question 3

Assuming that arr is an array identifier, the statement sum += *arr; ________.

Accepted Answer

adds the value stored in arr[0] to sum

Question 4

If arr is an array identifier and k is an integer, the expression arr[k] is equivalent to

Accepted Answer

*(arr + k)

Question 5

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

Accepted Answer

ampersand ( & )

Question 6

The code segment int *ptr; has the same meaning as ________.

Accepted Answer

int* ptr;

Question 7

The statement double *num; ________.

Accepted Answer

defines a pointer variable called num

Question 8

The term pointer can be used interchangeably with ________.

Accepted Answer

address

Question 9

The delete operator should only be used on pointers that ________.

Accepted Answer

point to storage allocated by the new operator

Question 10

To dereference a structure pointer and simultaneously access a member of the structure, the appropriate operator to use is ________.

Accepted Answer

the structure pointer operator, ->

Question 11

True/False: A pointer with the value 0 (zero) is called the NULL pointer.

Accepted Answer

True

Question 12

True/False: An array name is a pointer constant because the address it represents cannot be changed during run-time.

Accepted Answer

True

Question 13

True/False: It is legal to subtract a pointer variable from another pointer variable.

Accepted Answer

True

Question 14

True/False: The expression s->m has the same meaning as (*s).m.

Accepted Answer

True

Question 15

True/False: The expression s->m is meaningful only when s is a pointer to a structure and m is a member of the structure.

Accepted Answer

True

Question 16

True/False: Variables cannot be created when a program is already running.

Accepted Answer

False

Question 17

True/False: With pointer variables you can access, but you cannot modify, data in other variables.

Accepted Answer

False

Question 18

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 19

When you work with a dereferenced pointer, you are actually working with ________.

Accepted Answer

the variable whose address is stored in the pointer variable

Question 20

Which arithmetic operations can be performed on pointers?

Accepted Answer

Addition , subtraction , preincrement, and postincrement

Question 21

Which of the following statements correctly deletes a dynamically-allocated array pointed to by p?

Accepted Answer

delete [ ] p;

Question 22

Which of the following statements correctly deletes a dynamically-allocated array pointed to by p?

Accepted Answer

int ptr = int *num1; int ptr = &num1; float num1 = &ptr2; All of the above are invalid

Question 23

With pointer variables, you can ________ manipulate data stored in other variables.

Accepted Answer

indirectly

Question 24

You may use a pointer to a structure as a ________.

Accepted Answer

function parameter function return type structure member

Question 25

________ can be used as pointers.

Accepted Answer

Array names

Programming Fundamentals 3

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