#include <dirent.h>
#include <assert.h>
#include <stdio.h>

int
main()
{
    DIR * dir = opendir(".");
    assert(dir);
    struct dirent *ent;

    while (ent = readdir(dir)) {
        printf("%s\n", ent->d_name);
    }
    assert(closedir(dir) == 0);
}