Torbjørn S. Kristoffersen wrote:
> I'm programming a program that should use a string which contains
> a domain name (f.ex. foo.foocorp.com) and printf the IP address to
> stdout using gethostbyname();
>
> This example works nice:
>
> ...
> if((h=gethostbyname(argv[1])) == NULL)
> {
> herror("gethostbyname");
> exit(1);
> }
>
> printf("IP adress: %s\n",inet_ntoa(*((struct in_addr *)h->h_addr)));
> ...
>
> But how can i replace argv with a string that has previously been
> declared with
>
> char String[25]; ?
> and later use scanf or cin.
>
> When I try replace argv with pString, the program ends up with a
> Segmentation fault..
What is pString?
> I ran strace on the program and it reported that the string contained a
> newline (\n). (The newline is the error, right? correct me if i'm wrong)
The argument to gethostbyname shouldn't contain a trailing \n,
although this shouldn't cause it segfault.
> How can i remove this newline? And replace it with a \0 or whatevers
> necessary?
char *p;
for (p = String; *p; p++)
if (*p == '\n')
{
*p = '\0';
break;
}
--
Glynn Clements <[EMAIL PROTECTED]>
