cURL C++ Example

curl_example.cpp

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


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

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

  curl = curl_easy_init();
  if(curl) {
    curl_easy_setopt(curl, CURLOPT_URL, "http://www.google.com");
    curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, WriteCallback);
    curl_easy_setopt(curl, CURLOPT_WRITEDATA, &readBuffer);
    res = curl_easy_perform(curl);
    curl_easy_cleanup(curl);

    std::cout << readBuffer << std::endl;
  }
  return 0;
}

this was the best explanation

I'm getting this output

$ g++ main.cpp -lcurl

C:\Users\Admin\AppData\Local\Temp\ccEeyCDI.o:cleopatra.cpp:(.text+0x51): undefined reference to `_imp__curl_easy_init'
C:\Users\Admin\AppData\Local\Temp\ccEeyCDI.o:cleopatra.cpp:(.text+0x7b): undefined reference to `_imp__curl_easy_setopt'
C:\Users\Admin\AppData\Local\Temp\ccEeyCDI.o:cleopatra.cpp:(.text+0x98): undefined reference to `_imp__curl_easy_setopt'
C:\Users\Admin\AppData\Local\Temp\ccEeyCDI.o:cleopatra.cpp:(.text+0xb4): undefined reference to `_imp__curl_easy_setopt'
C:\Users\Admin\AppData\Local\Temp\ccEeyCDI.o:cleopatra.cpp:(.text+0xc1): undefined reference to `_imp__curl_easy_perform'
C:\Users\Admin\AppData\Local\Temp\ccEeyCDI.o:cleopatra.cpp:(.text+0xd1): undefined reference to `_imp__curl_easy_cleanup'
collect2.exe: error: ld returned 1 exit status