Deck 12: Structures

Question 1

In the broadest sense, the term "structure" refers to how individual elements of a group are arranged or organized.

Answer 1

True

Question 2

In dealing with structures, it is important to distinguish between a structure's form and its contents.

Answer 2

True

Question 3

A structure's contents consist of the symbolic names, data types, and arrangement of individual data fields in the record.

Answer 3

False

Question 4

The structure's form consists of the actual data stored in the symbolic names.

Question 5

Populating a structure is a complex task in C.

Question 6

birth.month refers to the birth member of the month structure.

Question 7

As in most C statements, the spacing of a structure definition is not rigid.

Question 8

A structure definition statement is identical to the form used in defining any program variable: the data type is followed by a list of variable names.

Question 9

When defining structures, if the form of the structure is not followed by any variable names, the list of structure members must be preceded by a user-selected structure type name.

Question 10

A structure may be declared globally or locally.

Question 11

A record is a homogeneous data structure.

Question 12

An array is a heterogeneous data structure.

Question 13

The real power of structures is realized when they are used in an array.

Question 14

By convention all typedef names are written in lowercase.

Question 15

Within a set of parallel arrays, all of the elements with the same subscript value would refer to information corresponding to the same individual.

Question 16

The problem with arrays of structures is that the correspondence between data items is easily lost if only one of the arrays is reordered.

Question 17

Parallel arrays are rarely used anymore because almost all programming languages currently provide structures.

Question 18

On all compilers, complete copies of all members of a structure can be passed to a function by including the name of the structure as an argument to the called function.

Question 19

A globally-defined structure type centralizes the declaration of the structure's organization.

Question 20

When passing a structure to a function, the calling function and the called function must both refer to the same globally defined structure type.

Question 21

*(pt.hours) refers to the variable whose address is in the pt.hours variable.

Question 22

The -> operator has a lower priority than the increment operator.

Question 23

The declaration for a union is identical in form to a structure declaration, with the reserved word union used in place of the reserved word struct.

Question 24

When working with unions, typically a second variable keeps track of the current data type stored in the union.

Question 25

Each of the individual data items in a "structure" or single unit is an entity by itself that is referred to as a ____.

A)record
B)union
C)data structure
D)data field

Question 26

Taken together, all the data fields form a single unit that is referred to as a(n) ____.

A)record
B)union
C)tuple
D)array

Question 27

In C, a record is referred to as a(n) ____.

A)data field
B)union
C)structure
D)tuple

Question 28

Assigning actual data values to the data items of a structure is called ____ the structure.

A)populating
B)filling
C)fattening
D)completing

Question 29

Each member of a structure is accessed by giving both the structure name and individual data item name, separated by a ____.

A)@
B)->
C):
D))

Question 30

____ is not a valid C statement.

A)struct {int month; int day; int year;} birth;
B)struct {int month; int day; int year;} birth, current;
C)struct Date {int month; int day; int year;};
D)struct {int month, int day, int year} birth;

Question 31

In the following definition, ____ is the structure type name.
Struct Date
{
Int month;
Int day;
Int year;
} birth, current;

A)Date
B)month
C)birth
D)current

Question 32

____ creates a new data type without actually reserving any storage locations.

A)struct {int month; int day; int year;} birth;
B)struct {int month; int day; int year;} birth, current;
C)struct Date {int month; int day; int year;};
D)struct Date {int month; int day; int year;} birth;

Question 33

____ is not a definition statement.

A)struct {int month; int day; int year;} birth;
B)struct {int month; int day; int year;} birth, current;
C)struct Date {int month; int day; int year;};
D)struct Date {int month; int day; int year;} birth;

Question 34

After the following declaration, you can define and initialize a variable birth of this structure type as follows ____.
Struct Date
{
Int month;
Int day;
Int year;
};

A)Date birth = {12, 28, 1987};
B)struct Date birth = {12, 28, 1987};
C)Date birth = {12; 28; 1987};
D)struct Date birth = {12; 28; 1987};

Question 35

For non-ANSI C compilers, the keyword ____ must be placed before the keyword struct for initialization within a local declaration statement.

A)unsigned
B)const
C)init
D)static

Question 36

Arrays of structures are very useful to replace ____ arrays.

A)parallel
B)two-dimensional
C)multi-dimensional
D)static

Question 37

A ____ statement provides a simple method for creating a new and typically shorter name for an existing structure type.

A)#define
B)typedef
C)set
D)union

Question 38

If you have declared a structure named Date, you can then make the name DATE a synonym for the terms struct Date, by using the statement ____.

A)typedef struct Date DATE;
B)typedef DATE struct Date;
C)#define struct Date DATE
D)#define DATE struct Date

Question 39

____ creates an array of 10 PayRecord structures.

A)struct (PayRecord employee)[10];
B)struct[10] PayRecord employee;
C)struct PayRecord[10] employee;
D)struct PayRecord employee[10];

Question 40

Suppose employee is an array of 10 PayRecord structures. ____ accesses the rate member of the first structure in the employee array.

A)employee.[0]rate
B)employee.rate[0]
C)employee[0].rate
D)(employee.rate)[0]

Question 41

____ arrays are two or more arrays, where each array has the same number of elements and the elements in each array are directly related by their position in the arrays.

A)Two-dimensional
B)Multi-dimensional
C)Parallel
D)Complex

Question 42

The statement ____ passes a copy of the structure member emp.idNum to a function named display().

A)display(*emp.idNum);
B)display(emp.idNum);
C)display(&emp.idNum);
D)display(emp->idNum);

Question 43

The function call ____ passes a copy of the complete emp structure to calcNet().

A)calcNet(struct emp);
B)calcNet(*emp);
C)calcNet(&emp);
D)calcNet(emp);

Question 44

If pt is declared as a pointer to a structure of type Employee, ____ refers to the idNum member of the structure.

A)(*pt).idNum
B)*pt.idNum
C)*(pt.idNum)
D)(*pt.)idNum

Question 45

If pt is declared as a pointer to a structure of type Employee, ____ refers to the variable whose address is in the pt.idNum variable.

A)(*pt).idNum
B)*pt.idNum
C)pt->idNum
D)(*pt.)idNum

Question 46

____ is equivalent to (*pointer).member.

A)pointer.member
B)pointer>member
C)pointer->member
D)pointer@member

Question 47

A(n) ____ is a data type that reserves the same area in memory for two or more variables, each of which can be a different data type.

A) array
C) structure
B) register
D) union

Question 48

A union reserves sufficient memory locations to accommodate ____.

A) its smallest member's data type
C) all of its members' data types
B) its largest member's data type
D) none of its members' data types