Hello Google World from C++ using libcurl on Windows.

CMakeLists.txt

cmake_minimum_required(VERSION 3.16)

set(HUNTER_PACKAGES CURL)
set(HUNTER_CURL_CMAKE_ARGS
  CMAKE_USE_SCHANNEL=ON
  CMAKE_USE_OPENSSL=OFF
)

include(FetchContent)
FetchContent_Declare(SetupHunter GIT_REPOSITORY https://github.com/cpp-pm/gate)
FetchContent_MakeAvailable(SetupHunter)

project(curl-test)

find_package(CURL CONFIG REQUIRED)

file(WRITE ${CMAKE_BINARY_DIR}/main.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, "https://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;
}
]=])

add_executable(test-curl ${CMAKE_BINARY_DIR}/main.cpp)
target_link_libraries(test-curl PRIVATE CURL::libcurl)