GCSE Edexcel Computer Science Computational Thinking, Searching & Sorting Algorithms: The airport has two runways. Eac

Question

The airport has two runways. Each runway has a queue of planes waiting to take off. Only five planes can be queued for each runway. Other planes remain at the gates until a place is free. When a plane leaves the gate, its details are added to a runway queue.

This process is controlled by a computer program.

Here is an algorithm for the process of adding planes to the runway queues.

```
SET runway[] TO {"", "", "", "", ""}
SET index1 TO 0
SET index2 TO 0
SET status TO "Green" # Can be red, amber, green
SET proceed TO False
BEGIN FUNCTION()
BOOLEAN status = False
SET status TO False
IF (runway1 = 1) THEN
    IF (index1 < 5) THEN
        SET runway[index1] TO pFlight
        SET index1 TO index1 + 1
        SET status TO True
    END IF
ELSE IF (runway2 = 2) THEN
    IF (index2 < 5) THEN
        SET runway[index2] TO pFlight
        SET index2 TO index2 + 1
        SET status TO True
    END IF
END IF
END FUNCTION

DISPLAY "Input runway number and flight ID"
RECEIVE runway FROM (INTEGER) KEYBOARD
RECEIVE flightID FROM (STRING) KEYBOARD
proceed
```

The airport has two runways - Edexcel - GCSE Computer Science - Question 8 - 2020 - Paper 1

Worked Solution & Example Answer:The airport has two runways - Edexcel - GCSE Computer Science - Question 8 - 2020 - Paper 1

8(a) Identify the parameters in the function

8(b) Explain the call on line 35

8(c) Detail the return value of the function

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