Grade 10 Computer Science Exam Review

Front 1

What is a null string?

Back 1

put" "

Front 2

What is a field?

Back 2

A field is an area of space on a line.

You can set a field by typing a : followed by a positive integer after the data to be outputted.

Front 3

What happens when two field numbers are produced?

Back 3

~ the first specifies the total number of spaces put aside to hold the output

q

~ the second gives the number of decimal places the output should display to

Front 4

Do trailing zeros have a value on Turing

Back 4

no

Front 5

What does picMerge vs picCopy?

Back 5

picMerge- merges into the background

picCopy- paste it

Front 6

what does '..'do?

Back 6

· Two dots at the end of the put statement will move the cursor up to the prompt

Front 7

What types of variables are there and what are their differences

Back 7

Boolean: True or False

real: decimal, no negatives

integer: decimal and negatives

string: " ", strings (anything w/n the quotes)

Front 8

What is a variable?

Back 8

Variables are special memory boxes that a programmer uses to hold data. For now, we will be looking at three types of variables

Front 9

What is this - ':= '

Back 9

the assignment function for variables

Front 10

What does :* do when your getting a string?

Back 10

It gets the entire string and not just the first word

Front 11

what must be done in order to use a variable and what does the computer do about it ?

Back 11

You must declare the variable

When a variable is created, the computer puts aside a little piece of memory for the program to use, and it identifies that memory with the name of the variable.

The computer has a memory that is set up like a series of mailboxes in which information can be stored. Each mailbox has an address.

Front 12

What is Concatenation?

Back 12

using a plus sign outside quotes to combine strings

Front 13

What does declaring a variable do?

Back 13

1. Putting aside a memory box of a particular size

2. Setting the kind of data that can be stored in it

3. Giving the box a name.

Front 14

What is a Constant

Back 14

A constant is an identifier for a storage location, just like a variable. However, unlike a variable, once a constant has a value, that value cannot change for the remainder of the program.

Front 15

How do you declare a constant?

Back 15

Usually located in the variable declaration section of the program, the const statement is written as: .

const identifier := value

Where:

identifier is the name of the constant; this follows the same naming rules that are for variables but should be in BLOCK CAPS.

value is the data you want stored in the constant; this could be an explicit value or a variable that has a value or even a formula

Front 16

What are the two types of Boolean operators taught and what they do?

Back 16

and- if every test condition is true

or - if one of the test conditions are true

Front 17

How does an if- else statement work

Back 17

if (test condition )then

if it is true then execute

else

if not then execute this

end if

Front 18

What type of comparison operators does a test condition use?

Back 18

__- less than

__- greater than

__- equal to

__- less than or equal to

__- greater than or equal to

__- not equal to

Front 19

What operators are you able to use in Turing?

Back 19

addition

exponentiation

subtraction

division

multiplication

brackets

div- division producing whole number answer

mod- division producing remainder

Front 20

In a for loop what are the different parts

Back 20

range: the range that the control variable is restrained to

index : the control variable

step: the interval that the step changes by

Front 21

What goes inside a window declaration

Back 21

___"cursor", "nocursor" - Causes the cursor to be shown (or hidden).

___"echo", "noecho" - Causes (or suppresses) showing characters that are typed.

___"title:" - Causes the title of the active window to be set to .

___"position:;" - Causes the position of the upper left corner of the active window to be set to (x, y). OR : “left”, “center”, or “right”. : “top”, “middle”, or “bottom”

___"graphics:;" - Sets window to graphics with a size of pixels wide and pixels high.

Front 22

What must you do before you assign a window?

Back 22

declare it

Front 23

What must you do to run a process ?

Back 23

fork it.

Front 24

What is tallying

Back 24

counting the number of occurrences in a loop

Front 25

What is dummy data?

Back 25

Dummy data is allowing the user to enter something that would not usually be entered, to trigger the exit.