Deck 5: Understanding Arrays, Strings and Pointers

Question 1

Which of the following statements has an error?

A) int rent[4] = {250, 375, 460, 600};
B) int rent[] = {250, 375, 460, 600};
C) int rent[4] = {250, 375};
D) int rent[4] = {250, 375, 460, 600, 650};

Answer 1

D

Question 2

A C++ value expressed within double quotation marks is commonly called a ____.

A) string
B) character
C) quote
D) citation

Answer 2

A

Question 3

Flag variables are usually bool type or ____ type.

A) char
B) int
C) float
D) double

Answer 3

B

Question 4

C++ programmers do not refer to an array of characters as a string unless the last usable character in the string is the null character.

Question 5

An alternative to parallel arrays is to create ____.

A) one-dimensional arrays
B) two-dimensional arrays
C) arrays of structure objects
D) arrays of flag variables

Question 6

A convenient way to set all array elements to zero is to declare as follows: int rent[20] = ____; .

A) 0
B) {0..0}
C) {0}
D) {}

Question 7

You can determine the size of variables in your system with the ____ operator.

A) size()
B) sizeof()
C) length()
D) len()

Question 8

Which of the following statements produces the same output as cout ? Assume someNumbers is an array of integers.

Question 9

When you assign one pointer to another, you are not making a copy of the data; instead, you are setting two pointers to point to the same memory location.

Question 10

Which of the following statements produces the same output as cout ? Assume someNumbers is an array of integers.

Question 11

Complete the following program, which displays all the values in the array:
Const int SZ_OF_ARRAY = 5;
Int arrayInt[SZ_OF_ARRAY] = {34, 56, 12, 3, 99};
For(int x = 0; ____ ; ++x)
Cout

Question 12

Suppose you create a structure that has an integer field called partNum ; Next, you create an array of ten elements of objects of this structure. Which of the following is a correct way to access the first element of the array?

A) (part.partNum)[0]
B) part.partNum[0]
C) part.[0]partNum
D) part[0].partNum

Question 13

You can use a variable to declare the size of an array.

Question 14

____ arrays are corresponding arrays in which values in the same relative locations are logically related.

A) Two-dimensional
B) Parallel
C) One-dimensional
D) Structured

Question 15

In C++, the first element in any array is the element with the 1 subscript.

Question 16

____ is a string constant.

A) 'H'
B) '\n'
C) "Hello"
D) Hello

Question 17

If you create a firstName string and initialize it to "Mary" , and then use the C++ statement cout , the output is ____.

A) Mary
B) ary
C) an error
D) empty because the program does not compile

Question 18

You can use the address operator (____) to examine the memory address of a variable.

A) %
B) $
C) *
D) &

Question 19

An array subscript must always be an integer.

Question 20

In C++, you are required to assign array values to elements in sequential order.

Question 21

Can you provide values for an array when you declare it? If so, how?

Question 22

What problem can you identify in the following program?
Char name1[] = "Mary";
Char name2[] = "Diane";
Strcpy(name2, "Margaret Veronica");

A) It tries to input a string value including whitespace.
B) It tries to assign one string to another using the assignment operator.
C) It tries to compare strings using the comparison operator.
D) It exceeds the bounds of an array.

Question 23

The ____ function reads characters into an array, up to a size limit or until the newline character is encountered, whichever comes first.

A) getche()
B) strcpy()
C) getline()
D) getch()

Question 24

When you declare an array, the size must be a(n) ____________________.

Question 25

To compare the contents of two strings you can use the ____.

A) compare() function
B) strcmp() function
C) strcpy() function
D) == operator

Question 26

Write a C++ statement that prints how much memory an integer uses.

Question 27

In C++, it is conventional to begin class names with a(n) ____________________ letter.

Question 28

When should you use an array instead of regular variables?

Question 29

____________________ are variables that can hold memory addresses.

Question 30

What happens if a subscript exceeds the size of an array?

Question 31

How does the hexadecimal numbering system work?

Question 32

Depending on your compiler, you might have to use the statement ____ at the top of your file to use the strcpy() function.

A) #include
B) #include
C) #include
D) #include

Question 33

A string ____________________ is a value within double quotes.

Question 34

To indicate that a variable is a pointer, you should begin the variable's name with a(n) ____.

A) asterisk
B) ampersand
C) pipe
D) exclamation point

Question 35

int , char , double , and float are primitive or ____________________ data types.

Question 36

Memory locations beyond an array are ____________________ for the array.

Question 37

The input ____ is a holding area for waiting input.

A) stack
B) queue
C) memory
D) buffer

Question 38

How do you declare an array in C++?

Question 39

To compare the contents of two string objects you can use the ____.

A) compare() function
B) strcmp() function
C) strcpy() function
D) == operator

Question 40

An array name actually represents a(n) ____________________.

Question 41

Identify and describe two common errors that are easy to make when manipulating arrays.

Question 42

Describe the various ways to place an asterisk when declaring an integer pointer.

Question 47

How can you copy the contents of one C-style string to another string in C++?

Question 50

How can you create a string variable in C++?

Question 51

Is there ever a circumstance when you can type two characters within single quotation marks? Explain.

Question 52

How is the null character represented in C++?