Computational constructs test questions - National 5 Computing Science Revision

1

What does the following line of code do?

SET result TO a*5

Adds 5 to whatever is in the variable called 'a' and then stores the answer in a variable called 'result'

Takes whatever is in the variable called 'result' and multiplies it by 5

Multiplies whatever is in the variable called 'a' by 5 and then stores the answer in a variable called 'result'

2

Which of the following lines of code would be used to concatenate the word 'hello' with the username of user, where ‘username’ is a variable?

"hello" & username

hello username

& “hello username” &

3

What is the difference between a simple condition and a complex condition?

Humans can resolve simple conditions, computers must resolve complex conditions

A simple condition makes use of one condition only, whereas a comples condition makes use of two or more conditions

A simple condition is another term for ‘loop’, whereas a complex condition is another term for ‘selection statement’

4

What is wrong with this piece of code?

Line 1: SET fahrenheitTemp TO (celsiusTemp * (9/5)) + 32

Line 2: RECEIVE celsiusTemp FROM (INTEGER) KEYBOARD

Line 3: SEND fahrenheitTemp TO DISPLAY

It is out of sequence

The formula of the calculation is wrong

Fahrenheit is spelled wrongly

5

What does the code shown below do?

Line 1: RECEIVE mark FROM (INTEGER) KEYBOARD

Line 2: IF mark ≥ 80 THEN

Line 3: SEND “You received a merit award” TO DISPLAY

Line 4: ELSE

Line 5: SEND “You did not gain a merit award this time” TO DISPLAY

Line 6: END IF

Declares a variable and sets its initial value to 80 before checking if 80 marks should lead to a merit award.

Gets a mark from the user and if the mark is greater than or equal to 80 it displays a message telling the user that them they have received a merit. Otherwise it displays a message letting the user know that they did not gain a merit.

Gets the user to enter their mark and then works out their grade.

6

If we have a piece of code that uses iteration what does this mean?

It repeats something a number of times

It is entering a value into a variable

You are making a selection with the code

7

What is a fixed loop?

A loop that repeats a sequence of code until a condition is met

A loop that repeats a sequence of code a set number of times

A loop that will run until the user enters the word ‘fixed’

8

Which of these constructs is an example of a selection statement rather than a loop?

IF..END IF construct

FOR..NEXT construct

WHILE..END WHILE construct

9

The piece of code shown below is an example of which of the following?

SET raffleTicket TO RANDOM (1,50)

String concatenation

Iteration

Pre-defined function

10

Which of these is not a logical operator?

\[\geq\]

\[\neq\]