gistfile1.txt

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

int main(void) {
  struct addrinfo* res = NULL;
  getaddrinfo("google.com", "443", 0, &res);

  struct addrinfo* i;

  for(i=res; i!=NULL; i=i->ai_next) {
      char str[INET6_ADDRSTRLEN];
      if (i->ai_addr->sa_family == AF_INET) {
          struct sockaddr_in *p = (struct sockaddr_in *)i->ai_addr;
          printf("%s\n", inet_ntop(AF_INET, &p->sin_addr, str, sizeof(str)));
      } else if (i->ai_addr->sa_family == AF_INET6) {
          struct sockaddr_in6 *p = (struct sockaddr_in6 *)i->ai_addr;
          printf("%s\n", inet_ntop(AF_INET6, &p->sin6_addr, str, sizeof(str)));
      }
  }

}