Chapter 7 Arrays

Question 1

7.1 Arrays can hold ____ _____.

Answer 1

Multiple values

Question 2

7.1 How are the values in arrays stored?

Answer 2

The values are stored together in consecutive memory locations.

Question 3

7.1 int days[6];

Answer 3

This is a definition of an array of integers.

Question 4

7.1 How many elements can this array store?
int days[6];

Answer 4

6

Question 5

7.1 An array’s size declarator must be?

Answer 5

A constant integer expression with a value greater than 0.

Question 6

7.1 Arrays can either be a literal (EX: int days[6];), or?

Answer 6

Named constants.
EX: const int NUM_DAYS = 6;
int days [NUM_DAYS];

Question 7

7.1 The amount of memory used by an array depends on?

Answer 7

Depends on the array’s data type and the number of elements.

Question 8

7.1 The size of an array can be calculated by?

Answer 8

By multiplying the size of an individual element by the number of elements in the array.

Question 9

7.2 What is a subscript?

Answer 9

A number that is assigned to each element in an array.

Question 10

7.2 What is the use of a subscript?

Answer 10

A subscript is used as an index to pinpoint a specific element within an array.

Question 11

7.2 Subscript numbering starts at what number?

Answer 11

Subscript numbering in C++ always starts at 0.

Question 12

7.2 May array elements be used with the cin and cout objects like any other variable?

Answer 12

Yes

Question 13

7.2 Storing subscript numbers in variable makes it possible to do what?

Answer 13

Makes it possible to use a loop to “cycle through” an entire array, performing the same operation on each element.

Question 14

7.3 Does C++ perform array bounds checking?

Answer 14

In order to increase runtime efficiency, C++ does not perform array bounds checking.

Question 15

7.3 In working with arrays, what is a common type of mistake?

Answer 15

Off-by-one error.

Question 16

7.4 When arrays are defined, they may be?

Answer 16

Arrays may be initialized when they are defined.

Question 17

7.4 The series of values inside the braces and separated with commas is called?
EX: {1, 2, 3, 4, 5, 6}

Answer 17

An initialization list.

Question 18

7.4 When an array is being initialized, C++ requires a value for every element. True or false?

Answer 18

False.
It’s possible to only initialize part of an array.

Question 19

7.4 If an array is being partially initialized, the uninitialized elements will be set to?

Answer 19

Zero

Question 20

7.4 What is implicit array sizing?

Answer 20

Defining an array without specifying its size, as long as you provide an initialization list.

Question 21

7.5 What is the range-based for loop?

Answer 21

A specialized version of the for loop. It’s a loop that iterates once for each element in an array. Every time the loop iterates, it copies an element from the array to a variable.

Question 22

7.5 Range-based for loop was introduced in what version of C++?

Answer 22

C++ 11