#include <boost/filesystem.hpp>
#include <string>
#include <iostream>
#include <sstream>
using namespace boost::filesystem;

//****************************************************************************************

int main()
{
          bool recurse = true;
// C:\Users\admin\Desktop\testgo
path pathDest = "C:\\Users\\admin\\Desktop\\testgo";
int a = 1;

// using namespace boost::filesystem;

recursive_directory_iterator it("C:\\Users\\admin\\Desktop\\test"), end;
for (; it != end; ++it)
{

    if (!recurse)
    {
        it.no_push(); // disable recurse
    } // end if

    if (!is_regular_file(*it))
    {
        continue;
    }  // end if

    // make the validity check
    auto filepath = it->path();

    // check if the fileextension is .bmp

    try
    {
        if(filepath.extension() == ".bmp")
        {
            // rename(const path& old_p, const path& new_p);
            std::ostringstream os;
            os << a <<".bmp";
            //copy_file(filepath, pathDest);
            //dont need this since copy file can also rename it //rename(pathDest, pathDest/os.str());

            copy_file(filepath, pathDest/os.str());
            a++;

        } // end if
    }// end try
    catch(const std::exception& e )
    {
        std::cout<< "abc: "<< e.what() << "\n" ;
    }


    } // end for
}