Deck 6: Functions

Question 1

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

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

Answer 1

C

Question 2

A function includes the statements that make up the function.

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

Answer 2

D

Question 3

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

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

Answer 3

E

Question 4

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

Question 5

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

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

Question 6

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

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

Question 7

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 8

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

Question 9

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

A)return
B)call
C)define
D)declare
E)randomly select

Question 10

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

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

Question 11

A void function is one that

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

Question 12

A _ variable is declared outside all functions.

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

Question 13

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

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

Question 14

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

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

Question 15

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 16

In the statement cout << sqrt(22.0);
1. is

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

Question 17

A _

A)stub is a program module whose purpose is to test other modules by calling them.
B)dummy program
C)pseudocode routine
D)main function
E)driver

Question 18

A static local variable is one

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

Question 19

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

A)initialized to zero, not initialized
B)initialized to zero, initialized to zero
C)not initialized, initialized to zero
D)not initialized, not initialized
E)None of the above

Question 20

A function function.

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

Question 21

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

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

Question 22

A void function is one that

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

Question 23

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 24

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

Question 25

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

Question 26

Two or more functions may have the same name provided that

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

Question 27

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

Question 28

A function can have zero to many parameters, and it can have return value(s).

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

Question 29

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

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

Question 30

An overloaded function is one

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

Question 31

The value in local variable is retained between function calls.

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

Question 32

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

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

Question 33

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

Question 34

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

Question 35

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 36

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

A)by value.
B)as a default argument.
C)by reference.
D)as a string.
E)by variable.

Question 37

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

Question 38

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

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

Question 39

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 40

A function other than the main function is executed

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