Deck 6: Functions

Question 1

It is possible for a function to have some parameters with default arguments and some without.

Answer 1

True

Question 2

The ________ statement causes a function to end and the flow of control to move back to the point where the function call was made.

A) end
B) break
C) continue
D) return
E) exit

Answer 2

D

Question 3

Functions are ideal for use in menu-drive programs. When a user selects a menu item, the program can call an appropriate function to carry out the user's choice.

Answer 3

True

Question 4

When a function just needs to use a copy of an argument passed to it, the argument should normally be passed by value.

Question 5

A ________ variable is defined inside the body of a function and is not accessible outside that function.

A) global
B) reference
C) local
D) counter
E) constant

Question 6

A ________ is a program module whose purpose is to test other modules by calling them.

A) stub
B) driver
C) main function
D) dummy program
E) pseudocode routine

Question 7

A function ________ includes the statements that make up the function.

A) definition
B) prototype
C) call
D) heading
E) parameter

Question 8

In a function call, in addition to the name of the function, you are required to furnish

A) a data type for each argument.
B) an identifier name or constant for each argument.
C) the data type of the return value.
D) All of the above
E) A, and B, but not C.

Question 9

A function with a return type of bool must return a value of either True or false.

Question 10

The value in ________ local variable is retained between function calls.

A) a global
B) an internal
C) a static
D) a dynamic
E) no

Question 11

When used as a parameter, a ________ variable allows a function to access and modify the original argument passed to it.

A) static
B) value
C) reference
D) floating-point
E) default value

Question 12

A function other than the main function is executed

A) when it is first defined.
B) when its function prototype is encountered.
C) only once.
D) when the main function finishes executing.
E) whenever it is called.

Question 13

A void function is one that

A) does nothing useful.
B) has an empty function body.
C) has no parameters.
D) returns no value.
E) returns a zero or null character.

Question 14

Two or more functions may have the same name provided that

A) they do different things.
B) one has a prototype and the other doesn't.
C) their parameter lists are different.
D) their return types are different.
E) either C or D is True.

Question 15

The ________ function causes the entire program to terminate, regardless of which function or control mechanism is executing.

A) terminate()
B) return()
C) continue()
D) exit()
E) break()

Question 16

A function can have zero to many parameters and either zero or one return value(s).

Question 17

In a function prototype, in addition to the name of the function, you are required to furnish

A) a data type for each parameter.
B) an identifier name for each parameter.
C) the data type of the return value.
D) all of the above.
E) A and C, but not B.

Question 18

When more than one function has the same name they are called ________ functions.

A) overloaded
B) renamed
C) parallel
D) identical
E) sister

Question 19

In a function header, in addition to the name of the function, you are required to furnish

A) a data type for each parameter.
B) an identifier name for each parameter.
C) the data type of the return value.
D) all of the above.
E) B and C, but not A.

Question 20

Breaking a program up into a set of manageable sized functions is called ________ programming.

A) functional
B) modular
C) divisible
D) high-level
E) low-level

Question 21

When you make a function call, the order of the arguments you send does not matter as long as the number of arguments matches the number of parameters the function has.

Question 22

Both function headers and function calls must list the data types of all data being passed to the function.

Question 23

When a function needs access to an original argument passed to it, for example in order to change its value, the argument needs to be

A) passed by value.
B) passed into a reference parameter.
C) a static variable.
D) an integer.
E) a constant.

Question 24

A ________ is a dummy function that is called instead of the actual function it represents, to test that the call to and return from the function are working correctly.

A) stub
B) driver
C) test function
D) void function
E) prototype function

Question 25

A(n) ________ is information that is passed to a function, and a(n) ________ is a special variable that receives and holds that information.

A) function call, function header
B) function prototype, function header
C) parameter, argument
D) argument, parameter
E) formal argument, actual argument

Question 26

Although global variables can be useful, it is considered good programming practice to restrict your use of them.

Question 27

An overloaded function is one

A) that calls other functions.
B) that has the same name as another function.
C) that has too many parameters.
D) that attempts to do too much in a single function.
E) that does different things depending on who calls it.

Question 28

When only a copy of an argument is passed to a function, it is said to be passed

A) by copy.
B) by reference.
C) informally.
D) by value.
E) by default value.

Question 29

A function can have ________ parameters, and it can have either zero or one return value(s).

A) zero to many
B) either zero or one
C) either one or two
D) a maximum of ten
E) no

Question 30

A function ________ is a statement that causes a function to execute.

A) prototype
B) header
C) definition
D) call
E) parameter list

Question 31

You may use the exit() function to return the flow of control from a function back to main() regardless of where the function was called from.

Question 32

In the following statement, what is 22.0?
Cout << sqrt(22.0);

A) A memory location.
B) A parameter.
C) An argument.
D) A default value.
E) An lvalue.

Question 33

In C++ global and local numeric variables are initialized to zero by default.

Question 34

A void function is one that

A) has an empty function body.
B) is never called.
C) returns no value.
D) has no parameters.
E) returns a zero.

Question 35

A function ________ eliminates the need to place the function definition before all calls to the function.

A) header
B) prototype
C) argument
D) parameter
E) that is void

Question 36

A(n) ________ argument is one that is automatically passed to a parameter when the argument is left out of the function call.

A) floating-point
B) actual
C) null
D) default
E) static

Question 37

A static local variable is one

A) whose value never changes.
B) whose value is retained between function calls.
C) with the same name as a global variable.
D) whose scope is limited to the function it is defined in.
E) that is reinitialized each time the function it is defined in is called.

Question 38

If a function has no return statement, the flow of control moves to the next function in the file when the closing brace of the function body is reached.

Question 39

A ________ variable is declared outside all functions.

A) local
B) global
C) static
D) counter
E) constant

Question 40

One reason for using functions is to break programs into a set of manageable units, or modules.