#include <stdio.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netdb.h>
#include <string.h>

int main() {
  struct addrinfo hints, *aitop;
  int i,err;
  char *hosts[]= {
  	"www.gentoo.org",
	"www.debian.org",
	"www.google.com",
	"www.yahoo.com",
	"www.ripe.net",
	"gnu.org",
	"www.gnu.org"
  };

  for (i=0; i<sizeof(hosts)/sizeof(char *); i++) {
    memset(&hints, 0, sizeof(hints));
    hints.ai_family = PF_UNSPEC;
    hints.ai_socktype = SOCK_STREAM;
    err=getaddrinfo(hosts[i], NULL, &hints, &aitop);
    printf("%s: %s\n",hosts[i],(err)? gai_strerror(err):"OK");
  }
}