[Year 12 SofDev] Help needed

[Brett Groves]

Hi all,

Wondering if some kind soul who is good with desk checks / pseudo code 
can help me out here. We are about to commence OC2 (running a week late) 
and I have given my students some algorithms to evaluate for revision. 
On one in particular I realised I made an error of logic when 
evaluatiing it myself and have now confused my self to point of 
frustration. It's the one below. It has two count loops which it uses to 
select data in an array but they both have identical conditions. As I am 
currently reading it values will never be passed to the second loop as 
the evaluation condition that ends the first loop will also end the 
second???? Scratches head......sure I'm failing to see obvious! Can 
anyone help pls

Brett

*Question 12:*

The following diagram shows the contents of an array of records used for 
mixing colours.

The name of the array is 'COLOUR'.

The algorithm below is used to calculate colour values, using an array.

BEGIN

SET TOTAL TO 0

SET COUNTER TO 1

WHILE COUNTER < 4

TOTAL = TOTAL + COLOUR [COUNTER] . GREENVALUE

ADD 1 TO COUNTER

ENDWHILE

WHILE COUNTER < 4

TOTAL = TOTAL + COLOUR [COUNTER] . REDVALUE

ADD 1 TO COUNTER

ENDWHILE

PRINT TOTAL

END


What will be the output of this algorithm?

(A) 10

(B) 11

(C) 18

(D) 25



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