#include <stdio.h>
#include "hdf5.h"

herr_t cb(hid_t obj, const char* name, const H5O_info_t *info, void* data){

    printf("Name: %s\n", name);
    return 1;  /* should halt iteration with only one name printed */
}

int main(){

    hid_t fid, gid;

    fid = H5Fcreate("file.hdf5", H5F_ACC_TRUNC, H5P_DEFAULT, H5P_DEFAULT);
    gid = H5Gopen1(fid, "/");

    H5Gcreate1(gid, "Group1", -1);
    H5Gcreate1(gid, "Group2", -1);
    H5Gcreate1(gid, "Group3", -1);

    printf("--- visit() ---\n");
    H5Ovisit(gid, H5_INDEX_NAME, H5_ITER_NATIVE, cb, NULL);
    printf("--- visit_by_name() ---\n");
    H5Ovisit_by_name(gid, ".", H5_INDEX_NAME, H5_ITER_NATIVE, cb, NULL, H5P_DEFAULT);

    return 0;
}