Rif.: comment convertir la fonction to_number on labwindows

[moumou785]

Bonjour,

j'ai un algorithme qui comporte la fonction to_number :

intCheckSum = to_number(substr(strNumSerie, 1, 1), '9'); 

j’ai trouvé cette fonction on labview, mais je n’arrive pas à le traduire on CVI.

Merci pour votre aide

[RobertoBozzolo]

There are a lot of conversion functions in CVI (as in every C compiler): some of them are grouped in ANSI C Library >> General utilities >> String to Arithmetic expression (functions like atoi, atof...). Alternatively you can scan number from string with sscanf (ANSI C library >> Input/Output >> Formatted Input/Output) or Scan (Formatting and I/O Library).

CVI and LabVIEW are very different: for the first one some time spent looking into libraries or checking some good C programming manual would help 

[moumou785]

bonjour,

il ne s'agit pas d’une simple conversion d’une chaine à un entier, la fonction to_number on le trouve en labview, PL/SQL…..

ci-joint quelques explications de cette fonction :

 

lien utile pour plus d'info:

http://www.dba-ora.fr/article-to_number-102614909.html

CDT

[RobertoBozzolo]

moumou,

1. I'm sorry but I don't speak French: I'll keep on in English and rely on automatic translations to understand your posts unless you write them in English too

2. I don't understand if you are looking for a CVI function or for an explanation of a SQL statement. While I cannot help you for the latter, I suggest you to study Scan () function from the Formatting and I/O Library, which comes plenty of explanations and examples. As an alternative in standard ANSI C language you can use sscanf (), documentation for which can be found in any C reference book

If you can provide an example of the string to extract data from, we can try suggesting you some idea.

[D-Cubed]

Bonjour moumou,

J'ai trouvé quelques examples pour les fonctions «Scan».  Regarde ces examples et dites-moi si ce n'est pas l'idée correcte.

[Wolfgang]

...and this link works