一个简单的项目设置示范

# CMakeList.txt: gpt_0 的 CMake 项目，在此处包括源代码并定义
# 项目特定的逻辑。
#
cmake_minimum_required (VERSION 3.8)

# Enable Hot Reload for MSVC compilers if supported.
if (POLICY CMP0141)
  cmake_policy(SET CMP0141 NEW)
  set(CMAKE_MSVC_DEBUG_INFORMATION_FORMAT "$<IF:$<AND:$<C_COMPILER_ID:MSVC>,$<CXX_COMPILER_ID:MSVC>>,$<$<CONFIG:Debug,RelWithDebInfo>:EditAndContinue>,$<$<CONFIG:Debug,RelWithDebInfo>:ProgramDatabase>>")
endif()

# 安装了vcpkg, 又通过vcpkg 安装了curl, jsoncpp等。
# 使用vcpkg安装时，注意加参数，否则会安装成32位库
project ("gpt_0")

set(ZLIB_INCLUDE_DIR "C:/tools/vcpkg/installed/x64-windows/include")
set(ZLIB_LIBRARY "C:/tools/vcpkg/installed/x64-windows/lib")

set(CURL_DIR    "C:/tools/vcpkg/packages/curl_x64-windows/share/curl")
set(JSONCPP_DIR "C:/tools/vcpkg/packages/jsoncpp_x64-windows/share/jsoncpp")

# 定义CURL作为外部库，允许他从外部导入，省却了copy 该库到执行文件目录下的尴尬
add_library(CURL SHARED IMPORTED GLOBAL)
set_target_properties(CURL PROPERTIES
    IMPORTED_LOCATION "C:/tools/vcpkg/packages/curl_x64-windows/bin/libcurl.dll"
)

# 使用curl 的 cmake文件 去CURL_DIR目录下去找curlConfig.cmake文件，根据该文件找其配置
find_package(CURL CONFIG REQUIRED)
find_package(JSONCPP CONFIG REQUIRED)

# 将源代码添加到此项目的可执行文件。
add_executable (gpt_0 "gpt_0.cpp" "gpt_0.h")

target_link_directories(gpt_0 PRIVATE 
    "C:/tools/vcpkg/packages/curl_x64-windows/lib"
    "C:/tools/vcpkg/packages/zlib_x64-windows/lib"
    "C:/tools/vcpkg/packages/jsoncpp_x64-windows/lib"
)
target_include_directories(gpt_0 PRIVATE 
    "C:/tools/vcpkg/packages/curl_x64-windows/include"
    "C:/tools/vcpkg/packages/zlib_x64-windows/include"
    "C:/tools/vcpkg/packages/jsoncpp_x64-windows/include"
)

target_link_libraries(gpt_0 PRIVATE CURL::libcurl JsonCpp::JsonCpp)

if (CMAKE_VERSION VERSION_GREATER 3.12)
  set_property(TARGET gpt_0 PROPERTY CXX_STANDARD 20)
endif()

c++ 代码：

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

using namespace std;

// 回调函数，用于处理curl接收到的响应数据
size_t WriteCallback(char* ptr, size_t size, size_t nmemb, string* userdata) {
    size_t len = size * nmemb;
    userdata->append(ptr, len);
    return len;
}


int main()
{
    // 设置API请求URL和参数
    string url = "https://api.openai.com/v1/engines/davinci-codex/completions";
    string api_key = "YOUR_API_KEY_HERE";
    string prompt = "I want to write a C++ program";
    string parameters = "{\"prompt\": \"" + prompt + "\", \"max_tokens\": 50, \"n\": 1}";

    // 初始化cURL会话
    CURL* curl;
    CURLcode res;
    curl_global_init(CURL_GLOBAL_DEFAULT);
    curl = curl_easy_init();
    if (curl) {
        // 设置HTTP请求头和参数
        struct curl_slist* headers = NULL;
        headers = curl_slist_append(headers, "Content-Type: application/json");
        headers = curl_slist_append(headers, ("Authorization: Bearer " + api_key).c_str());
        curl_easy_setopt(curl, CURLOPT_URL, url.c_str());
        curl_easy_setopt(curl, CURLOPT_HTTPHEADER, headers);
        curl_easy_setopt(curl, CURLOPT_POSTFIELDS, parameters.c_str());

        // 发送HTTP请求，并解析JSON响应
        string response;
        curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, WriteCallback);
        curl_easy_setopt(curl, CURLOPT_WRITEDATA, &response);
        res = curl_easy_perform(curl);
        if (res == CURLE_OK) {
            // 解析JSON响应，提取回答
            Json::Value root;
            Json::Reader reader;
            bool parsingSuccessful = reader.parse(response, root);
            if (parsingSuccessful) {
                string answer = root["choices"][0]["text"].asString();
                cout << "模型回答: " << answer << endl;
            }
            else {
                cout << "解析JSON响应失败" << endl;
            }
        }
        else {
            cout << "HTTP请求失败" << endl;
        }

        // 清理资源
        curl_easy_cleanup(curl);
        curl_slist_free_all(headers);
    }
    curl_global_cleanup();

    return 0;
}