Как спарсить файлы из директории?

#include <iostream>
#include <windows.h>
 
int main()
{
    std::string dir = "C:\\Users\\111\\Desktop";
    std::string new_dir = "C:\\Users\\111\\Desktop\\qwer_files";
    
    std::string mask = dir + "\\qwer*.*";
    
    WIN32_FIND_DATA wfd;
    HANDLE hFindFile;
    if ((hFindFile = FindFirstFile(mask.c_str(), &wfd)) == INVALID_HANDLE_VALUE)
        std::cerr << "Directory '" << dir << "' does not exist\n";
    else
    {
        CreateDirectory(new_dir.c_str(), NULL);
        do {
            std::cout << wfd.cFileName << "\n";
            std::string from = dir + "\\" + wfd.cFileName;
            std::string to = new_dir + "\\" + wfd.cFileName;
            CopyFile(from.c_str(), to.c_str(), TRUE);
        }
        while (FindNextFile(hFindFile, &wfd));
    }
    std::cout << "Done\n";
    return 0;
}

#include <iostream>
#include <exception>
#include <experimental/filesystem>
 
int main()
{
    try
    {
        std::experimental::filesystem::path from = "C:\\Users\\111\\Desktop\\qwer_files";
        std::experimental::filesystem::path to = "C:\\Users\\111\\Desktop\\qwer_files2";
        std::experimental::filesystem::copy(from, to, std::experimental::filesystem::copy_options::recursive);
    }
    catch (std::exception& e)
    {
        std::cout << e.what();
    }
    std::cin.get();
    return 0;
}

#include <iostream>
#include <windows.h>
 
int main()
{
    std::string dir = "C:\\Users\\111\\Desktop";
    std::string new_dir = "C:\\Users\\111\\Desktop\\qwer_files";
    
    std::string mask = dir + "\\qwer*.*";
    
    WIN32_FIND_DATA wfd;
    HANDLE hFindFile;
    if ((hFindFile = FindFirstFile(mask.c_str(), &wfd)) == INVALID_HANDLE_VALUE)
        std::cerr << "Directory '" << dir << "' does not exist\n";
    else
    {
        CreateDirectory(new_dir.c_str(), NULL);
        do {
            std::cout << wfd.cFileName << "\n";
            std::string from = dir + "\\" + wfd.cFileName;
            std::string to = new_dir + "\\" + wfd.cFileName;
            CopyFile(from.c_str(), to.c_str(), TRUE);
        }
        while (FindNextFile(hFindFile, &wfd));
        FindClose(hFindFile);
    }
    std::cout << "Done\n";
    return 0;
}

#include <iostream>
#include <windows.h>
 
bool CopyDirectory(const std::string &from, const std::string &to)
{
    std::string source, destination;
    
    if (!CreateDirectory(to.c_str(), 0))
        false;
 
    std::string mask = from + "\\*.*";
    WIN32_FIND_DATA wfd;
 
    HANDLE hFindFile = FindFirstFile(mask.c_str(), &wfd);
    if (hFindFile != INVALID_HANDLE_VALUE)
    {
        do
        {
            if (wfd.cFileName[0] != '.')
            {
                source.erase();
                destination.erase();
 
                source = from + "\\" + wfd.cFileName;
                destination = to + "\\" + wfd.cFileName;
 
                if (wfd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)
                {
                    if (CopyDirectory(source, destination))
                        return true;
                }
                else
                {
                    if (!CopyFile(source.c_str(), destination.c_str(), TRUE))
                        return false;
                }
            }
        }
        while (FindNextFile(hFindFile, &wfd));
        FindClose(hFindFile);
    }
    return true;
}
 
int main()
{
    std::string from = "C:\\Users\\111\\Desktop\\qwer_files";
    std::string to = "C:\\Users\\111\\Desktop\\qwer_files2";
 
    if (CopyDirectory(from, to))
        std::cout << "Done\n";
    else
        std::cerr << "Error\n";
    std::cin.get();
    return 0;
}