help2002

It's UWAweek 51

help2002

This forum is provided to promote discussion amongst students enrolled in CITS2002 Systems Programming.
Please consider offering answers and suggestions to help other students! And if you fix a problem by following a suggestion here, it would be great if other interested students could see a short "Great, fixed it!" followup message.

Displaying the 3 articles in this topic

Showing 3 of 835 articles.
Currently no other people reading this forum.

UWA week 38 (2nd semester, week 8) ↓

1st project Expression Syntax Validation (all 4)

9:51am Wed 18th Sep, Joshua N.

ANONYMOUS wrote:

> Hello, > > Just to confirm. Do we not have to validate any expressions which are assigned to a variable. > E.g. x <- y + 2. > Do we need to validate 'y + 2', or do we only validate identifiers used in an expression? > > Thanks

Don't need to validate y+2 since it is an expression, but you do need to validate the assignment.

1st project Expression Syntax Validation (all 4)

9:55pm Wed 18th Sep, Samay G.

What is the expression is x <- y+2 But y is not declared so we have to check and declare it, is not that expected?

1st project Expression Syntax Validation (all 4)

10:24pm Thu 19th Sep, Joshua N.

"Samay Gupta" <23*6*5*8@s*u*e*t*u*a*e*u*a*> wrote:

> What is the expression is > > x <- y+2 > > But y is not declared so we have to check and declare it, is not that expected?

Yes. That is the only thing you need to check. If you see a variable, you don't recognize you must replace it with 0.