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

static size_t WriteCallback(void *contents, size_t size, size_t nmemb, std::string *buffer) {
    size_t realsize = size * nmemb;
    buffer->append((char*)contents, realsize);
    return realsize;
}

int main() {
    CURL *curl;
    CURLcode res;
    std::string buffer;

    curl_global_init(CURL_GLOBAL_DEFAULT);
    curl = curl_easy_init();
    if(curl) {
        curl_easy_setopt(curl, CURLOPT_URL, "http://example.com/file.txt");
        curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, WriteCallback);
        curl_easy_setopt(curl, CURLOPT_WRITEDATA, &buffer);

        res = curl_easy_perform(curl);
        if(res != CURLE_OK) {
            std::cerr << "Failed to download file: " << curl_easy_strerror(res) << std::endl;
        } else {
            std::cout << "File content: " << buffer << std::endl;
        }

        curl_easy_cleanup(curl);
    }

    curl_global_cleanup();
    return 0;
}

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