Как сохранить изображение с url в c++?

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#include <iostream>
#include <curl/curl.h>
#include <fstream>

int main()
{
    CURL *curl;
    CURLcode res;
    std::ofstream imageFile("image.jpg", std::ios::binary);

    curl_global_init(CURL_GLOBAL_DEFAULT);

    curl = curl_easy_init();
    if (curl) {
        curl_easy_setopt(curl, CURLOPT_URL, "http://example.com/image.jpg");
        curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, fwrite);
        curl_easy_setopt(curl, CURLOPT_WRITEDATA, &imageFile);

        res = curl_easy_perform(curl);

        curl_easy_cleanup(curl);
    }

    imageFile.close();

    curl_global_cleanup();

    return 0;
}

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#include <iostream>
#include <opencv2/opencv.hpp>

int main()
{
    cv::Mat image;
    std::string url = "http://example.com/image.jpg";

    cv::Mat buffer = cv::imdecode(cv::imread(url, cv::IMREAD_COLOR), cv::IMREAD_UNCHANGED);

    if(!buffer.empty()) {
        image = buffer;
        cv::imwrite("image.jpg", image);
        std::cout << "Image downloaded and saved successfully!" << std::endl;
    } else {
        std::cerr << "Failed to download image from URL" << std::endl;
    }

    return 0;
}