Final

Question 1

T/F? A pointer variable must be declared specific to the data type of the variable whose address will be assigned to it.

Answer 1

True

Question 2

T/F? A pointer has as its value a signed integer that is allocated four bytes of storage.

Answer 2

False

Question 3

T/F? To assign the address of a variable to a pointer variable an address operator must be used.

Answer 3

True

Question 4

T/F? To access the contents of a variable through a pointer variable, the pointer variable must be assigned the memory address of the variable first, and then the pointer must be dereferenced.

Answer 4

True

Question 5

T/F? A pointer variable has no data type of its own.

Answer 5

False

Question 6

T/F? A pointer variable must contain an unsigned integer so it cannot point to a character string.

Answer 6

False

Question 7

T/F? A pointer variable must not be assigned a scalar constant.

Answer 7

True

Question 8

T/F? A pointer variable can be added to another pointer variable.

Answer 8

False

Question 9

T/F? A pointer variable can be subtracted from another pointer variable.

Answer 9

True

Question 10

T/F? A pointer variable can be used to change the address of an array.

Answer 10

False

Question 11

T/F? Two pointer variable can point to the same variable.

Answer 11

True

Question 12

T/F? An array name is an address variable.

Answer 12

False

Question 13

T/F? The address of an array is found as either the array name or the explicit address of the first element of the array.

Answer 13

True

Question 14

T/F? The elements of a one-dimensional array may be accessed by dereferencing the offset address only once.

Answer 14

True

Question 15

T/F? To input data to an array using a pointer variable, the name of the array may be used to specify the address of the array elements.

Answer 15

False

Question 16

T/F? To input data to an array using pointer variable, the name of the array may be used to specify the address of the array elements.

Answer 16

True

Question 17

T/F? Arithmetic operations may be performed by using an array name without dereferencing the name.

Answer 17

False

Question 18

T/F? An array can be copied y assigning the address to a pointer variable.

Answer 18

False

Question 19

T/F? The dynamic storage allocation functions are in the sodlib.h header file in C.

Answer 19

True

Question 20

T/F? To allocate a block of storage at the time of execution of the program, dynamic storage allocation functions are used.

Answer 20

True

Question 21

T/F? The pointer tot he dynamic storage returned by calloc() must be cast to the data type it is pointing to.

Answer 21

True

Question 22

T/F? When a dynamic pointer is incremented by one, the address is incremented by the number of bytes of the data type it is pointing to.

Answer 22

True

Question 23

T/F? When a dynamic pointer is incremented, the address of the dynamic pointer variable will change.

Answer 23

False

Question 24

Write the code to declare a dynamic pointer and allocate storage to store a one-dimensional array of 200 elements and data type int.

Answer 24

int *ptr;

ptr = (int *) calloc(200, sizeof(int));

Question 25

Write the code to declare a dynamic pointer and allocate storage to store a one-dimensional array of 80,000 elements of data type float.

Answer 25

float *ptr;

ptr = (float *) calloc(80000, size of(float));

Question 26

Write a program to declare a dynamic pointer and allocate storage to store a two-dimensional array of 50 x 60 of data type float. Also write the code to input data to the dynamic array and output the data from the dynamic array.

Answer 26

float *ptr;
ptr = (float *) calloc(50 * 60, sizeof(float));
{
scans("%f", ptr);
ptr++;
}
ptr = ptr - 3000;
for(k = 0; k < 3000; k++)
{
printf("%f", *ptr);
ptr++;
}

Question 27

T/F? If there is not much variability in length of the character strings they may be stored in smooth arrays.

Answer 27

True

Question 28

T/F? To store strings with large variability in their length, dynamic storage should be used.

Answer 28

True

Question 29

T/F? The dynamic storage allocation function malloc() may be used to allocate storage to store strings.

Answer 29

True

Question 30

T/F? A particular structure is a derived data type derived from the basic and derived data types.

Answer 30

True

Question 31

T/F? When a structure is declared without a structure tag, a storage template is set up to allocate storage for the structure variables.

Answer 31

False

Question 32

T/F? When a structure is declared without a tag, the structure variables must be declared in the structure declaration statement itself.

Answer 32

True

Question 33

T/F? When a structure is declared with a structure tag the programmer has a choice of declaring the structure variables in the structure declaration itself or in a separate statement using the structure tag.

Answer 33

True

Question 34

T/F? Structure variables may be initialized in the structure declaration statement itself.

Answer 34

True

Question 35

T/F?Structure variables may be assigned values by using assignment statements.

Answer 35

True

Question 36

Structure variable members may be assigned values by computations.

Answer 36

True

Question 37

Structure variables may be elements of an array.

Answer 37

True

Question 38

Structure variables are manipulated by using the member operator.

Answer 38

True

Question 39

Structure variables may not be manipulated by using the structure variable pointers.

Answer 39

False