#include <stdio.h>	/* for printf */
#include <arpa/inet.h>  /* for inet_ntoa */
#include <unbound.h>	/* unbound API */

int main(void)
{
	struct ub_ctx* ctx;
	struct ub_result* result;
	int retval;

	/* create context */
	ctx = ub_ctx_create();
	if(!ctx) {
		printf("error: could not create unbound context\n");
		return 1;
	}

	/* query for webserver */
	retval = ub_resolve(ctx, "www.nlnetlabs.nl", 
		1 /* TYPE A (IPv4 address) */, 
		1 /* CLASS IN (internet) */, &result);
	if(retval != 0) {
		printf("resolve error: %s\n", ub_strerror(retval));
		return 1;
	}

	/* show first result */
	if(result->havedata)
		printf("The address is %s\n", 
			inet_ntoa(*(struct in_addr*)result->data[0]));

	ub_resolve_free(result);
	ub_ctx_delete(ctx);
	return 0;
}