1
Q
What is the difference between a size declarator and a subscript?
A
The size declarator is used in a definition of an array to indicate the number of elements the array will have.
A subscript is used to access a specific element in an array
2
Q
Look at the following array definition:
int values [10];
How many elements does the array have?
A
10
3
Q
Look at the following array definition:
int values [10];
What is the subscript of the first element in the array?
What is the subscript of the last element in the array?
A
9
4
Q
Look at the following array definition:
int values [10];
Assuming that an int uses four bytes of memory, how much memory does the array use?
A
40 bytes
5
Q
Why should a function that accepts an array as an argument, and processes that array, also accept an argument specifying the array size?
A
Because, with the array alone, the function has no way of determining the number of elements it has.
6
Q
How do you define an array without providing a size declarator?
A
By providing an initialization list. The array is sized to hold the number of values in the list
7
Q
Assuming that array1 and array 2 are both arrays, why is it not possible to assign the contents of array2 to array1 with the following statement?
array1 = array2;
A
An array name without brackets and a subscript represents the array’s beginning memory address. The statement shown attempts to assign the address of array2 to array1, which is not permitted.
8
Q
Is an array passed to a function by value or by reference?
A
By reference
9
Q
When you pass an array name as an argument to a function, what is actually being passed?
A
The array’s beginning memory address
10
Q
How do you establish a parallel relationship between two or more arrays?
A
By using the same subscript value for each array
11
Q
Look at the following array definition:
double sales [8] [10];
How many rows does the array have?
How many columns does the array have?
How many elements does the array have?
A
8 rows
10 columns
80 elements
12
Q
When writing a function that accepts a two-dimensional array as an argument, which size declarator must you provide in the parameter for the array?
A
The second size declarator, which is for the number of columns
13
Q
What advantages does a vector offer over an array?
A
- you dont have to declare the number of elements that a vector will have
- If you add a value to a vector that is already full, the vector will automatically increase its size to accommodate the new value
- a vector can report the number of elements it contains
14
Q
The ______ indicates the number of elements, or values, an array can hold.
A
size declarator
15
Q
The size declarator must be a(n) ______ with a value greater than ______.
A
integer
16
Q
Each element in an array is accessed and indexed by a number known as a(n) ______.
A
subscript
17
Q
Subscript numbering in C++ always starts with ______.
A
18
Q
The number inside the brackets of an array definition is the ______, but the number inside an array’s brackets is an assignment statement, or any other statement that works with the contents of the array, is the ______.
A
size declarator
subscript
19
Q
C++ has no array ______ checking, which means you can inadvertently store data past the end of an array
A
bounds
20
Q
Starting values for an array may be specified with a(n) ______ list.
A
inititalization
21
Q
If an array is partially initialized, the uninitialized elements will be set to ______.
A
22
Q
If the size declarator of an array definition is omitted, c++ counts the number of items in the ______ to determine how large the array should be.
A
initialization list
23
Q
By using the same ______ for multiple arrays, you can build relationships between the data stored in the arrays.
A
subscript
24
Q
You cannot use the ____ operator to copy data from one array to another in a single statement.
A
assignment (=)
25
Q
Any time the name of the array is used without brackets and a subscript, it is seen as ______.
A
an address
26
Q
To pass an array to a function, pass the ______ of the array
A
address, or name
27
Q
A(n) ______ array is like several arrays of the same type put together
A
multi-demensional
28
Q
It is best to think of a two-dimensional array as having ______ and ______.
A
rows, columns
29
Q
To define a two-dimensional array, ______ size declarators are required
A
two
30
Q
When initializing a two-dimensional array, it helps to enclose each row’s initialization list in ______.
A
braces
31
Q
When initializing a two dimensional array, it helps to enclose each rows initialization list in ______.
A
braces
32
Q
When a two dimensional array is passed to a function the ______ size must be specified.
A
column
33
Q
The ______ is a collection of programmer defined data types and algorithms that you may use in your programs
A
Standard Template Library (STL)
34
Q
The two types of containers defined by the STL are ______ and ______.
A
sequence, associative
35
Q
The vector data type is a(n) ______ container.
A
sequence
36
Q
To define a vector in your program, you must #include the ______ header file.
A
vector
37
Q
To store a value in a vector that does not have a starting size, or that is already fill, use the ______ member function.
A
push_back
38
Q
To determine the number of elements in a vector, use the ______ member function.
A
size
39
Q
Use the ______ member function to remove the last element from a vector.
A
pop_back
40
Q
To completely clear the contents of a vector, use the ______ member function.
A
clear
41
Q
[T/F]
An array’s size declarator can be either a literal, named constant, or a variable.
A
False
42
Q
[T/F]
To calculate the amount of memory used by an array, multiply the number of elements by the number of bytes each element uses.
A
True
43
Q
[T/F]
The individual elements of an array are accessed and indexed by unique numbers.
A
True
44
Q
[T/F]
The first element in an array is accessed by the subscript 1.
A
False
45
Q
[T/F]
The subscript of the last element in a single dimensional array is one less than the total number of elements in the array.
A
True
46
Q
[T/F]
The contents of an array element cannot be displayed with cout.
A
False
47
Q
[T/F]
Subscript numbers may be stored in variables.
A
True
48
Q
[T/F]
You can write program that use invalid subscripts for an array.
A
True
49
Q
[T/F]
Arrays cannot be initialized when they are defined. A loop of other means must be used.
A
False
50
Q
[T/F]
The values in an initialization list are stored in the array in the order they appear in the list.
A
True
51
Q
[T/F]
C++ allows you to partially initialize an array.
A
True
52
Q
[T/F]
If an array is partially initialized, the uninitialized elements will contain “garbage.”
A
False
53
Q
[T/F]
If you leave an element uninitialized, you do not have to leave all the ones that follow it uninitialized.
A
False
54
Q
[T/F]
If you leave out the size declarator of an array definition, you do not have to include initialization list.
A
False
55
Q
[T/F]
The uninitialized elements of a string array will automatically be set to the value “0″
A
False
56
Q
[T/F]
You cannot use the assignment operator to copy one array’s contents to another in a single statement.
A
True
57
Q
[T/F]
When an array name is used without brackets and a subscript, it is seen as the value of the first element in the array.
A
False
58
Q
[T/F]
To pass an array to a function, pass the name of the array.
A
True
59
Q
[T/F]
When defining a parameter variable to hold a single dimensional array argument, you do not have to include the size declarator.
A
True
60
Q
[T/F]
When an array is passed to a function, the function has access to the original array.
A
True
61
Q
[T/F]
A two dimensional array is like several identical arrays put together.
A
True
62
Q
[T/F]
It’s best to think of 2D arrays as having rows and columns.
A
True
63
Q
[T/F]
The first size declarator (in the declaration of a 2D array) represents the number of columns. The second size definition represents the number of rows.
A
False
64
Q
[T/F]
2D arrays may be passed to functions, but the row size must be specified in the definition of the parameter variable.
A
False
65
Q
[T/F]
C++ allows you to create arrays with three or more dimensions.
A
True
66
Q
[T/F]
A vector is an associative container.
A
False
67
Q
[T/F]
To use a vector, you must include the vector header file.
A
True
68
Q
[T/F]
Vectors can report the number of elements they contain.
A
True
69
Q
[T/F]
You can use the [ ] operator to insert a value into a vector that has no elements.
A
False
70
Q
[T/F]
If you add a value to a vector that is already full, the vector will automatically increase its size to accommodate the new value.
A
True
