convert a string xxx.xxx.xxx.xxx in a number (CIDR format)

[Franco Amato]

Hi I tried your piece of code but it give to me some problems.
For example if I write
char sz[] =3D "255.2.123";
the  if(sscanf(sz,...
give to me error
but if I write
 char sz[] =3D "255.2.123.255.255";
the the  if(sscanf(sz,...
give to me OK...WHYYYYYYYYY
Is not possible. How can I check the number of fields?
Frank



2007/5/4, H.Vidal, Jr. <hvidal at tesseract-tech.com>:
>
> Franco Amato wrote:
> > Thank to all.
> > To extract every field from the full entiere strind (xxx.xxx.xxx.xxx -
> > every fiels is a single xxx)
> > I used the strtok()...is there an analogue function in c++?
> > Regards
> > Frank
>
> This seems to work for me....
>
> #include <stdio.h>
>
> int main()
> {
>   int iA, iB, iC, iD;
>
>   char sz[] =3D "255.2.123.4";
>
>   if(sscanf(sz,
>             "%3d%*[.]%3d%*[.]%3d%*[.]%3d",
>             &iA, &iB, &iC, &iD) =3D=3D 4)
>    {
>     printf("Good\n");
>    }
>   else
>    {
>     printf("Bad\n");
>    }
>   return(0);
> }
>
> You might want to range check the values.
>
> hv
>
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