#include <curlpp/Easy.hpp>
#include <curlpp/Options.hpp>
#include <curlpp/cURLpp.hpp>
#include <iostream>
#include <fstream>
#include <string>

using std::operator""s;

namespace
{
    void Download(const std::string& url, const std::string& filename)
    {
        std::ofstream of(filename);

        cURLpp::Easy req;
        req.setOpt(cURLpp::Options::Url(url));
        req.setOpt(cURLpp::Options::NoProgress(false));
        req.setOpt(cURLpp::Options::FollowLocation(true));
        req.setOpt(cURLpp::Options::ProgressFunction([&](std::size_t total, std::size_t done, auto...)
        {
            std::cout << "\r" << done << " of " << total
                      << " bytes received (" << int(total ? done*100./total : 0) << "%)" << std::flush;
            return 0;
        }));
        req.setOpt(cURLpp::Options::WriteFunction([&](const char* p, std::size_t size, std::size_t nmemb)
        {
            of.write(p, size*nmemb);
            return size*nmemb;
        }));
        req.perform();
    }
}

int main()
{
    cURLpp::initialize();
    Download("http://iki.fi/bisqwit/ctu85/NamesList.txt"s, "NamesList.txt"s);

    std::cout << std::endl;
}