Test 1

Question 1

What is this for loop doing:
int[ ] num = {2, 4, 6, 7, 9, 10, 15, 21, 34};
int i;
for (i = 0; i

Answer 1

Setting each number of the array to the index number

Question 2

What value will be in the variable i when the loop body is complete? int[ ] num = {2, 4, 6, 7, 9, 10, 15, 21, 34};
int i;
for (i = 0; i

Answer 2

9

Question 3

Without doing the loop, but just using the initial values what does num[5] = 10; do?
int[ ] num = {2, 4, 6, 7, 9, 10, 15, 21, 34};
int i;
for (i = 0; i

Answer 3

Error because no num [10]

Question 4

Without doing the loop but just using the initial values, what does num[2]++ do?
int[ ] num = {2, 4, 6, 7, 9, 10, 15, 21, 34};
int i;
for (i = 0; i

Answer 4

Changes num[2] to 7

Question 5

Without doing the loop but using the initial values, what does num[2+2]++ do?
int[ ] num = {2, 4, 6, 7, 9, 10, 15, 21, 34};
int i;
for (i = 0; i

Answer 5

Changes num[4] to 10

Question 6

True or false: in order to have more than one statement be executed as part of the loop body, the statements must be enclosed in curly braces.

Answer 6

True

Question 7

True or false: given the for statements form, for (initialization; test; update), the initialization is perforated with each iteration through the loop.

Answer 7

False

Question 8

True or false: the for statement may not be written without an initialization component.

Answer 8

False

Question 9

True or false: the loop control variable used with a for statement must be an integral value

Answer 9

False

Question 10

True or false: the loop body is always executed at least one time with both the pretest and the posttest loop

Answer 10

False

Question 11

True or false: the do… While is used to implement a posttest loop

Answer 11

True

Question 12

Given the following what would be the output?

For (int cnt = 0; cnt

Answer 12

012

Question 13

What value is associated with num.Length if:
int[ ] num = {2, 4, 6, 7, 9, 10, 15, 21, 34};
int i;
for (i = 0; i

Answer 13

9

Question 14

True or false: you can declare an array without dimensioning its size, but the size must be determined before you can access it

Answer 14

True

Question 15

True or false: array identifiers are normally defined using a plural noun

Answer 15

False

Question 16

True or false: in C# the length of an array cannot be changed. After it is instantiated with a length, dynamic resizing is not an option.

Answer 16

True

Question 17

True or false: for an array that is dimensioned with a Length of 100, valid subscripts are 0-100

Answer 17

False

Question 18

True or false:
Double [ ] price = new double [ ] { 3, 2.2, 4.7, 6.1, 4}
Looking above the value of price.Length is 5

Answer 18

True

Question 19

True or false:
Double [ ] price = new double [ ] { 3, 2.2, 4.7, 6.1, 4}
With the declaration above, price[2] refers to 2.2

Answer 19

False

Question 20

True or false:
Double [ ] price = new double [ ] { 3, 2.2, 4.7, 6.1, 4}
With the declaration above, price[5] generates a runtime error

Answer 20

True

Question 21

True or false: the type used in the foreach expression must match the array type

Answer 21

True

Question 22

True or false: when you pass an array to a method, by default, a copy of each element in the array is made and passed to the method

Answer 22

False

Question 23

True or false: a parallel array is used to create string arrays because multiple characters are included within each element

Answer 23

False

Question 24

True or false: arrays can be sent to methods as arguments, and methods can have arrays as their return type

Answer 24

True

Question 25

True or false: when you use the assignment operator with an array, individual copied to another memory location

Answer 25

False

Question 26

True or false: with parallel arrays, the relationship is established through using the same subscript or index to refer to the element in both arrays

Answer 26

True

Question 27

Data members should be defined with an access mode of ________

Answer 27

Private

Question 28

Constructors are used to ________ a class

Answer 28

Instantiate

Question 29

Fields or data members are also called ________

Answer 29

Instance variables

Question 30

After a project has been created and a new class added to your application, you can use the ________ window in visual studio to create a class diagram

Answer 30

Solution explorer

Question 31

``` Array.Copy(waterDepth, 2, w, 0, 5); The Copy( ) method, shown above, is a(n) ________ method ```

Answer 31

Class

Question 32

An entire array collection of data can be ordered alphabetically with a call to the Array class member method ________

Answer 32

Sort

Question 33

To create an array to hold the 5 numeric scores, you could write ________

Answer 33

Int[ ] score = new int[5];

Question 34

Elements in array are sometimes referred to as ________ variables

Answer 34

Indexed