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Old May 18th, 2004, 08:43 AM
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Default Performing Equations

Hi,

This is probably a stupid question but it is bothering me.

I am retrieving an equation from a database, the datatype of the column is varchar.

       tmpEq = ((A + E) * 3.141) + C

The equation is then stored in a variable. I then replace the alpha characters with the corresponding numeric values (retrieved from another database table) the variable would then look like this;

      tmpEq = ((cint(10) + cint(10)) * 3.141) + cint(10)

The problem is when I write the tmpEq variable <%=tmpEq%> it writes the string instead of the result of the calculation.

Like I said this is probably a dumb question, but any help would be great.

Thanks,

Adam

(Oh this is classic asp and not .net)
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Old May 19th, 2004, 04:46 AM
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Default

Hi Adam,

If you're using VBScript You could use the Execute method...

Dim result
Execute "result = " & tmpEq
Response.Write result

Or for JScript you could do similar using eval().

HTH,

Chris

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Old May 23rd, 2004, 11:54 PM
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Default

Sounds a little confusing. I'm sure you have a good reason to store characters you intend to calculate as a varChar, are some of these characters not numbers?
More information would be good:
;;tmpEq = ((A + E) * 3.141) + C
what's A, E and C
;;The problem is when I write the tmpEq variable <%=tmpEq%> it writes the string
what exactly is 'the string'

run some data type functions on your values to determine what they are:
EG if your values A = 2
                    E = 5
are strings A + E = 25 of course if they are numbers will = 7

Wind is your friend
Matt
 


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