Parse tree

[abcdefg]

Im working on an assignment and was confused so I was looking for some help not just answers cause I need to understand (test).

I have these rules:
1. Expression -> Term | Expression Add_op Term
2. Term -> Factor | Term Mult_op Factor
3. Factor -> id | number | '-' Factor | '('Expression')'
4. Add_op -> '+' | '-'
5. Mult_op - > '*' | '/'

I need to draw a parse tree for this:
5-(3+4)*5

Here is what I have (its not a perfect tree):

-------------------E---------------------
| | |
E A T T A T E A T

(3+4) - 5 3 + 4 (3+4) * 5


Is anything wrong?

Thanx

[CornedBee]

Yes, you didn't use code tags, so your ASCII art was not preserved. Sorry, can't examine it this way.

[abcdefg]

it has code tags now, but isnt perfect. Im thinking the Expression on far left and right need to be broken down further, but Not sure how.

[CornedBee]

So I assume your starting rule is E?

To get this right, you need to be a parser yourself. You need to take a look at the rule and see how it can apply. I've attached the full parse tree. It's slightly shortened at the end because I ran out of space.

[abcdefg]

Thanx for the reply it helps alot just need to walk through it