cu

int download_Image(string filename_in, string filename_out)
{
    std::ifstream in(filename_in.c_str(), std::ios::in | std::ios::binary);
    if (in.is_open() == false)
        return -1;

    in.seekg(0, std::ios::beg);
    std::ios::pos_type pos_begin = in.tellg();
    in.seekg(0, std::ios::end);
    unsigned int file_length = unsigned int(in.tellg() - pos_begin);
    in.seekg(0, std::ios::beg);

    unsigned char* buffer = new unsigned char[file_length];
    in.read((char*)(buffer), file_length * sizeof (unsigned char));
    in.close();

	std::ofstream out(filename_out.c_str(), std::ios::out | std::ios::binary | std::ios::trunc);
    if (out.is_open() == false)
        return -1;

    out.write((char*)(buffer), file_length * sizeof (unsigned char));
    out.close();
	delete[] buffer;

	return 0;
}

download_Image("\\LinuxPc3\\Projects\\disk_image1", "C:\\Images\\disk_image1");

if (in.is_open() == false) ist false...hm

download_Image("\\\\LinuxPc3\\Projects\\disk_image1" ...