Algorithms - Error Checking HOW? (1 Viewer)

[Ghost1788]

Ok I just been doing question 22 of the 2001 HSC and i'm trying part a) iii)
refer to attackments


Now how do I write the error checking component of this question.

This is all I’ve got so far

BEGIN UPDATE INVENTFILE

RowNumber = 1
Read STOCK(RowNumber, StkNumber, StkQuantity)

WHILE StkNumber <> “999”
Inventfile.stocknumber(stkNumber)
Inventfile.QuantityAvail = Inventfile.QuantityAvail + StkQuantity
RowNumber = RowNumber + 1
Read STOCK(RowNumber, StkNumber, StkQuantity)
ENDWHILE​

END UPDATE INVENTFILE

BEGIN STOCK(RowNumber, StkNumber, StkQuantity)

StkNumber = Transfile.stknumber(RowNumber)
StkQuantity = Transfile.stknumber(RowNumber)​

END STOCK

Its not finished but can you people tell me if this is right. Also can you tell me how to right the error-checking component for this question.

PS if i am wrong how do you answer this question in pseudocode

 

[Casmira]

first thing I do is look out for obvious errors such as misspelling for variables, dodgy control structures, but if you analyse heaps of algorithms eventually you pick out things to look out for such as undeclared variables, logical use of control structures etc... sorry I couldnt really read that entire thing yet, I'l lwork on it tommorow

 

[Ghost1788]

c'mon ppl surely there is someone ot ther who knows how to do this question

 

[fullmetaljacket]

I'll have a look if I get some spare time, although with trials I don't think there is much time for that.

 

[D43V1L0N3]

for the error detecting bit just tac something like this after

Inventfile.QuantityAvail = Inventfile.QuantityAvail + StkQuantity

IF inventfile.quantityAvail <= 3 THEN
PRINT There are only "& inventfile.quantity & " of stock number " & inventfile.stocknumber & " in stock.
END IF

 

[Casmira]

IF inventfile.quantityavail < 3 THEN
^^ it asks for less than 3, not 3 or less, i know its nit picking, but even in a flawless algorithm they'll minus a mark for that little equals sign

 

[D43V1L0N3]

ah yes it does say less than 3
my bad lol

thx for correcting!