#include <iostream>
#include <dirent.h>
#include <cstdio>

using namespace std;



int main() {
    string nazwa_katalogu = "test";
    DIR *dir;
    struct dirent *ent;
    if ((dir = opendir (nazwa_katalogu.c_str())) != NULL) {
        while ((ent = readdir (dir)) != NULL) {
            cout << ent->d_name << endl;
        }
        closedir (dir);
    } else {
        perror("Nie ma takiego katalogu");
        return 1;
    }
    return 0;
}