/*domainname.c*/#include <stdio.h>#include <string.h>#include <net/netlib.h>int getdomainname(domain, size)char *domain;size_t size;{	FILE *domainfile;	char *line;	domainfile= fopen("/etc/domainname", "r");	if (!domainfile)	{		return -1;	}	line= fgets(domain, size, domainfile);	fclose(domainfile);	if (!line)		return -1;	line= strchr(domain, '\n');	if (line)		*line= '\0';	return 0;}