Explain this please

[Jamie Hall]

Silly question, but it has me befuddled. What is wrong with the following code?

prevclos = close(0,1,"us #f,d");
todopen = open(1,1,"us #f,d");
gap = (Math.abs(todopen-prevclos)>.49) ? true : false;
bstop = prevclos +.5;
sstop = prevclos - .5;
debugPrintln ("bstop: "+bstop+" sstop: "+sstop);


prevclos returns 106.969
sstop returns 106.469 as you would expect, but
bstop, instead of being 107.469 is 106.9690.5

So it seems as if I have some type mismatch, but where was it introduced? There are no other lines in the program as of yet - other than main() { and }

[gspiker]

I see a few things, the top two are:

If you want the previous close use -1, not 1
same with open.

It seems that it is viewing prevclos as a string. Since there is no - opperation associated with a string it converts it to int and does the right thing. However there is a + associated with strings...and that concat's the two strings together.

Try:
parseFloat(string) ie: parseFloat(prevclos);

to convert before the add.

Garth

[Jamie Hall]

Hi Garth,

I should have mentioned that the 0, 1 or -1 in the get statements were all irrelevant at this point. Sorry for the confusion. In any event the parseFloat function seems to do the trick.

Thank you very much.

Jamie