atoi doesn't accept NULL argument

Hello back:

Also I noticed that with version 5.5 "atoi" doesn't accept  NULL
argument
is there something equivalent that accept it??

Regards
Maurice

"Maurice" <morisaab@yahoo.fr> wrote:

>Also I noticed that with version 5.5 "atoi" doesn't accept  NULL
argument
>is there something equivalent that accept it??

If you're treating NULLs as actual strings, you will keep falling over
these problems.

It's fairly easy to write quick little wrappers though:

  inline int my_atoi(char const* text)
  {
     return text ? atoi(text) : 0;
  }

(Returning a valid value when handed an invalid string is not what I'd
normally recommend, but you seem to want to.)

Alan Bellingham
-- 
Team Browns
<url:http://www.borland.com/newsgroups/> Borland newsgroup descriptions

"Maurice" <morisaab@yahoo.fr> writes:

> Also I noticed that with version 5.5 "atoi" doesn't accept NULL
> argument is there something equivalent that accept it??

Testing for NULL before invoking functions that don't accept NULL
pointers (as Alan already wrote).

Also, note that atoi() is rarely a good choice, since strtol() offers

Your stated problems are that the functions supplied by the language fail to 
provide features which their specifications say that they do not provide.

The most productive path is to write your code in a manner which does not 
require that functions have a behavior that they are specified to not have.

As Mr Bellingham is saying, when designing a program it is incumbent upon 
the programmer to work with the features and limitations of the items which 
he is using.

.  Ed

> Maurice wrote in message
> news:47c283bc@newsgroups.borland.com...
>
> In fact, I'm moving my old programs to v5.5, atoi of v5.2 accept NULL 
> arguments. It's the case of typing a command line with optional 
> parameters. In some cases, I like that without parameters, the 
> corresponding value was 0.

"Alan Bellingham" <alanb@episys.com> wrote in message 
news:bis0s3lb0pems1kh54lo2oc40rp8tbvuna@4ax.com...
> "Maurice" <morisaab@yahoo.fr> wrote:
>
>>Also I noticed that with version 5.5 "atoi" doesn't accept 
NULL argument
>>is there something equivalent that accept it??
>
> If you're treating NULLs as actual strings, you will keep falling over
> these problems.
>
> It's fairly easy to write quick little wrappers though:
>
>  inline int my_atoi(char const* text)
>  {
>     return text ? atoi(text) : 0;
>  }
>
> (Returning a valid value when handed an invalid string is not what I'd
> normally recommend, but you seem to want to.)
>
> Alan Bellingham
> -- 
> Team Browns
> <url:http://www.borland.com/newsgroups/> Borland newsgroup
descriptions
> <url:http://www.borland.com/newsgroups/netiquette.html>     
netiquette

Hi:

In fact, I'm moving my old programs to v5.5, atoi of v5.2 accept NULL 
arguments. It's the case of typing a command line with optional parameters. 
In some cases, I like that without parameters, the corresponding value was 
0.

Thanks
Maurice