Deck 6: Modularity Using Functions: Part I

Question 1

Terms used as synonyms for arguments are actual arguments and actual parameters.

Answer 1

True

Question 2

Pass by value is also referred to as pass by reference.

Answer 2

False

Question 3

Parameters are sometimes referred to as actual parameters.

Answer 3

False

Question 4

Parameters are sometimes referred to as formal arguments.

Question 5

The function declarator is sometimes referred to as function prototype.

Question 6

Random numbers are a series of numbers whose order cannot be predicted.

Question 7

Pseudorandom numbers are numbers which are not really random, but are sufficiently random for the task at hand.

Question 8

In earlier versions of C, function prototypes were required.

Question 9

In earlier versions of C, if a function header line omitted a return data type, the return value was, by default, implicitly declared as being of type void.

Question 10

In C, it is permitted to nest one function inside another.

Question 11

Each C function is a separate and independent entity with its own parameters and variables.

Question 12

When you write a function, you are formally creating a function definition.

Question 13

The function's prototype, along with pre- and postcondition comments should provide a programmer with all the information necessary to call the function successfully.

Question 14

Postconditions are any set of conditions required by a function to be true if it is to operate correctly.

Question 15

All preprocessor directives, variables, named constants, and functions, except main(), must be either declared or defined before they can be used.

Question 16

A function returning a value must specify, in its header line, the data type of the value that will be returned.

Question 17

The parentheses in a return statement are required.

Question 18

Failure to exactly match the return value with the function's declared data type can lead to undesired results because the return value is always converted to the data type declared in the function's header line.

Question 19

The value of an expression can be explicitly converted into another type using the cast operator.

Question 20

A basic rule of testing states that each function should only be tested in a program in which all other functions are known to be correct.

Question 21

The standard C library consists of 5 header files.

Question 22

Placing the appropriate #include statement at the bottom of the program ensures proper access to the library functions whose prototypes are contained in the header file.

Question 23

The rand() function produces a series of random numbers in the range 0 < rand() < RAND_MAX, where the constant RAND_MAX is a compiler-dependent symbolic constant that is defined in the stdlib.h header file.

Question 24

Many C compilers have a randomize() routine that is defined using the srand() function.

Question 25

The getcharacter() function can be used for single character input.

Question 26

There is no C string data type.

Question 27

A function that is called or summoned into action by its reference in another function is a ____.

A)function prototype
B)called function
C)calling function
D)function declarator

Question 28

A function that calls another function is referred to as the ____.

A)function prototype
B)called function
C)calling function
D)function declarator

Question 29

A ____ declares the function to the compiler-it tells the compiler the name of the function, the data type of the value that the function will return (the keyword void indicates that the function will not be returning any value), and the data types of each argument that the function expects to receive when it is called.

A)function prototype
B)function header
C)function body
D)function declarator

Question 30

When a function simply receives copies of the values of the arguments and must determine where to store these values before it does anything else, this is known as a ____.

A)pass by value
B)pass by reference
C)stub
D)function declarator

Question 31

The purpose of a ____ is to identify the data type of the value returned by the function, if any, provide the function with a name, and specify the number, order, and type of values expected by the function.

A)function declarator
B)prototype
C)function body
D)function header

Question 32

The purpose of a ____ is to operate on the passed data and return, at most, one value directly back to the calling function.

A)function declarator
B)prototype
C)function body
D)function header

Question 33

The argument names in the header line of a function are known as ____.

A)arguments
B)parameters
C)actual arguments
D)actual parameters

Question 34

The portion of the function header that contains the function name and parameters is known as a ____.

A)function body
B)prototype
C)function declarator
D)stub

Question 35

The method for adjusting the random numbers produced by a random-number generator to reside within a specified range is called ____.

A)scaling
B)stubbing
C)prototyping
D)converting

Question 36

___ is an example of a function header line.

A)float roi(int, double);
B)float roi( int yrs, double rate);
C)printf("%f", roi(3, amt));
D)float roi( int yrs, double rate)

Question 37

___ is an example of a function prototype.

A)float roi(int, double);
B)roi(3, amt);
C)printf("%f", roi(3, amt));
D)float roi( int yrs, double rate)

Question 38

___ is an example of a calling statement.

A)float roi(int, double);
B)float roi( int yrs, double rate);
C)printf("%f", roi(3, amt));
D)float roi( int yrs, double rate)

Question 39

____ is a prototype of a function that returns no value.

A)void funcA();
B)funcA();
C)int funcA();
D)null funcA();

Question 40

To return a value, a function must use a(n) ____ statement.

A)exit
B)throw
C)break
D)return

Question 41

The minimum requirement of a ____ is that it compile and link with its calling module.

A)function body
B)function prototype
C)stub function
D)function declarator

Question 42

___ is the correct way to include a header file in your program.

A)#include
B)#include header-file-name
C)#include ;
D)#include header-file-name;

Question 43

The function ____ returns the absolute value of its double-precision argument.

A)double ceil(double)
B)double fmod(double)
C)double fabs(double)
D)double abs(double)

Question 44

The function ____ returns the common logarithm of its argument.

A)double exp(double)
B)double log(double)
C)double log10(double)
D)double fmod(double)

Question 45

The function ____ returns the natural logarithm of its argument.

A)double exp(double)
B)double log(double)
C)double log10(double)
D)double fmod(double)

Question 46

All C compilers provide ____ function(s) for creating random numbers, defined in the stdlib.h header file.

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

Question 47

The ____ function can be used to generate a random number in C.

A)rand()
B)srand()
C)random()
D)rnd()

Question 48

____ reads the computer's internal clock time, in seconds.

A)stime()
B)time(SECONDS)
C)time()
D)time(NULL)

Question 49

Scaling a random number as an integer value between 1 and N is accomplished using the expression ____.

A)1 + (int)rand() / N
B)1 + (int)rand() % N
C)(int)rand() / N
D)(int)rand() % N

Question 50

The function ____ returns a non-0 number if the argument is a letter or a digit; otherwise it returns a 0.

A) int isalnum(int)
B) int isalpha(int)
C) int isdigit(int)
D) int isxdigit(int)

Question 51

The function ____ converts an ASCII string to an integer.

A) string itoa(int)
B) double atof(string)
C) int atoi(string)
D) int toupper(int)