field and variable

[propeller]

hi there, am i stupid?

i have two fields. in these two fields i type in some numbers. then i have a button. the script of the button should multiply the numbers of the fields. what am i doing wrong? do i have to tell the app that the fields contain numbers? if yes, please how

Code: Select all

on mouseUp pButtonNumber
   put fld "Felda" into tFelda
   put fld "Feldb" into tFeldb
   put Felda*Feldb into tErgebnis
   
   end mouseUp

thank you for your help
have a nice evening.

[jmburnod]

Hi,
You have some type in your script (Felda*Feldb)
This should work

Code: Select all

on mouseUp pButtonNumber
   put fld "Felda" into tFelda
   put fld "Feldb" into tFeldb
   put tFelda * tFeldb into tErgebnis
   put tErgebnis
end mouseUp

Best regards
Jean-Marc

[propeller]

does still give me the same error: Operators *: error in left operand. i checked if the fields are named correctly and they are.

[bn]

Hi Propeller,

do you use decimals? If so do you use comma or colon?

a correct decimal would look like

5.2

Do you have any other text/characters in the left field?

Try to clear both fields and then type in the numbers you want.

Kind regards
Bernd

[SparkOut]

As bernd suggests, this error indicates that the contents of field "Felda" is not a number. (Perhaps using a comma as a decimal separator, where LC needs a point. Or, if you have a field with a single line height, someone has entered a value, then hit the return key, so the field looks empty, then a new value is typed in the field. Or something else has happened to put other content into the field so the multiplication operator cannot interpret the first value as a number.)
You need to validate the contents in order to ensure a genuine mathematical operation can be performed.

[propeller]

dear people, bn was right - i did use , instead of .

thank you for helping me an beeing kind to a noob.

[Klaus]

Hi Michael,

I ususally use two little function to compute (german) numbers in LC fields:.
Put these into the stack script and use them anywhere you need to:

Code: Select all

function ohnekomma tNumber
  ## ohne komma = german for: without comma
  replace COMMA with "." in tNumber
  return tNumber
end ohnekomma

function mitkomma tNumber
  ## with komma = german for: with comma
  replace "." with COMMA in tNumber
  return tNumber
end mitkomma

Then use them before computing and again before dispklaying to german users:

Code: Select all

...
put fld "a decimal number in german" into tFa
put fld "another decimal number in german" into tFb

## Before computing:
put ohnekomma(tFa) intoi tFa
put ohnekomma(tFb) into tFb

## Now compoute witn english numbers
put tFa * tFb into tResult

## "convert" back to german before displaying
put mitkomma(tResult) into fld "ergebnis"
...

Best

Klaus

[propeller]

Coooool. Thank you, Klaus

[mrcoollion]

put mitkomma(ohnekomma(tFa) * ohnekomma(tFb)) into fld "ergebnis"