Deck 14: Additional Capabilities

Question 1

The typedef statement creates a new data type.

Answer 1

False

Question 2

Using uppercase names in typedef statements is mandatory.

Answer 2

False

Question 3

One of the differences between the a typedef statement and a #define statement is that typedef statements are processed directly by the compiler while #define statements are processed by the preprocessor.

Answer 3

True

Question 4

Compiler processing of typedef statements allows for text replacements that are not possible with the preprocessor.

Question 5

The statement typedef int ARRAY[100]; is not valid in C.

Question 6

typedef statements cannot be used with structure definitions.

Question 7

Both the #ifndef and #ifdef directives permit conditional compilation in that the statements immediately following these directives, up to either the #else or #endif directives, are compiled only if the condition is true, whereas the statements following the #else are compiled only if the condition is false.

Question 8

The relationship between the #ifdef and #ifndef directives is that the expression #ifndef condition performs the same task as the expression #ifdef !condition.

Question 9

Sets of related integer values can be equated to an equivalent set of constants using an enumerated list.

Question 10

An enum statement can be replaced by several typedef statements.

Question 11

Integer values in an enumeration must be in sequence.

Question 12

An optional enumerated list name can be used in an enumeration statement.

Question 13

Enumerated constants can be any valid user-created identifier, but each name in the list must be unique.

Question 14

In an enumeration, it is not valid for two constants to be equated to the same integer value.

Question 15

The conditional operator has a lower precedence than the assignment operator.

Question 16

Conditional expressions are only useful in replacing if-else statements when the expressions in the equivalent if-else statement are not long or complicated.

Question 17

A goto statement is never required because C's normal structures provide sufficient flexibility to handle all possible flow control requirements.

Question 18

When working with bit operations, inclusive ORing with a 1 has the same effect as ANDing with a 0.

Question 19

When the bit operators &, |, and ^ are used with operands of different sizes, the shorter operand is always increased in bit size to match the size of the larger operand.

Question 20

For positive signed numbers, where the leftmost bit is 0, both arithmetic and logical right shifts produce the same result.

Question 21

C places several restrictions on the equivalences that can be established with the #define statement.

Question 22

The advantage of using a macro such as #define SQUARE(x) x * x is that since the data type of the argument is not specified, the macro can be used with any data type argument.

Question 23

A better alternative to #define SQUARE(x) (x) * (x) is #define SQUARE(x) x * x.

Question 24

If necessary, a macro definition can be continued on a new line by typing a backslash character, \, before the Enter key is pressed.

Question 25

The advantage of using a macro instead of a function is an increase in execution speed.

Question 26

The full function header of a main() function that will receive command-line arguments is int main(int argc, char *argv[]).

Question 27

Any argument typed on a command line is considered to be an integer.

Question 28

typedef can be used to create ____.

A)structures
B)variables
C)aliases
D)macros

Question 29

The statement ____ makes the name REAL a synonym for double.

A)typedef double REAL;
B)#define double REAL
C)enum REAL double
D)typedef REAL double;

Question 30

The definition REAL val; is ____.

A)not valid in C
B)is equivalent to double val; if it comes after typedef double REAL;
C)will generate a compiler warning
D)defines a macro instance if it comes after #define REAL double

Question 31

The equivalence produced by a typedef statement can frequently be produced equally well by a ____ statement.

A)enum
B)#define
C)struct
D)alias

Question 32

ARRAY first, second; is equivalent to the two definitions int first[100]; and int second[100]; if ____.

A)you are using a pre-ANSI C compiler
B)you are using a C/C++ compiler
C)the statement typedef int ARRAY[100]; is used before
D)the statement #define ARRAY int[100]; is used before

Question 33

The conditional preprocessor directive ____ means "if not defined".

A)#ifdef
B)#ifndef
C)#ifnotdef
D)#ifnotdefined

Question 34

The conditional preprocessor directive ____ means "if defined".

A)#ifdef
B)#ifndef
C)#ifdefined
D)#if_def

Question 35

____ is the most frequently used conditional preprocessor directive.

A)#define
B)#else
C)#ifdef
D)#ifndef

Question 36

Enumerated lists are identified by the reserved word ____ followed by an optional, user-selected name and a required list of one or more constants.

A)list
B)typedef
C)enumerate
D)enum

Question 37

By default, the first enumerated name in an enumerated list has a value of ____.

A)-1
B)0
C)1
D)NULL

Question 38

Explicit values can be assigned to each enumerated constant, with unspecified values automatically continuing the integer sequence from the last specified value. For example, ____.

A)enum {Mon: 1, Tue, Wed, Thr, Fri, Sat, Sun};
B)enum {Mon, Tue, Wed, Thr, Fri, Sat, Sun};
Mon = 1;
C)enum {Mon = 1, Tue, Wed, Thr, Fri, Sat, Sun};
D)enum {Mon 1, Tue, Wed, Thr, Fri, Sat, Sun};

Question 39

A conditional expression uses the conditional operator, ____, and provides an alternate way of expressing a simple if-else statement.

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

Question 40

The operator ____ is a ternary operator.

A)?:
B)->
C)&
D)[]

Question 41

The ____ statement provides an unconditional transfer of control to some other statement in a program.

A)jump
B)goto
C)label
D)transfer

Question 42

Using even one ____ statement in a program is almost always a sign of bad programming structure.

A)enum
B)typedef
C)goto
D)#define

Question 43

The ____ operator causes a bit-by-bit AND comparison between its two operands.

A)~
B)^
C)&&
D)&

Question 44

1 0 1 1 0 0 1 1 ____ 1 1 0 1 0 1 0 1 results in 1 0 0 1 0 0 0 1.

A)&
B)|
C)>>
D)<<

Question 45

____ bit operations are extremely useful in masking, or eliminating, selected bits from an operand.

A)&
B)|
C)>>
D)<<

Question 46

1 0 1 1 0 0 1 1 ____ 1 1 0 1 0 1 0 1 results in 1 1 1 1 0 1 1 1.

A)&
B)|
C)>>
D)<<

Question 47

____ is the exclusive OR operator.

A)&
B)|
C)^
D)~

Question 48

1 0 1 1 0 0 1 1 ____ 1 1 0 1 0 1 0 1 results in 0 1 1 0 0 1 1 0.

A)&
B)|
C)^
D)~

Question 49

The complement operator, ____, is a unary operator that changes each 1 bit in its operand to 0 and each 0 bit to 1.

A)&
B)|
C)^
D)~

Question 50

For unsigned integers, each left shift (using the << operator) corresponds to ____.

A)multiplication by 2
B)division by 2
C)multiplication by 4
D)division by 4

Question 51

In an arithmetic right shift (using the >> operator), each right shift corresponds to ____.

A)multiplication by 2
B)division by 2
C)multiplication by 4
D)division by 4

Question 52

In the equivalence statement #define SQUARE(x) x * x, x is ____.

A)fixed
B)an error
C)a variable
D)an argument

Question 53

#define SQUARE(x) x * x
Val = SQUARE(num1 + num2);
Results in the equivalent statement ____.

A)val = num1 + (num2 * num1 + num2);
B)val = (num1 + num2 * num1) + num2;
C)val = (num1 + num2) * (num1 + num2);
D)val = num1 + num2 * num1 + num2;

Question 54

Upon encountering the command line pgm14.3 three blind mice, the operating system stores it as a sequence of ____ strings.

A) one
C) four
B) three
D) five

Question 55

To standardize arguments passing to a main() function, only ____ item(s) is/are allowed.

A) one
C) three
B) two
D) four