Отправить данные на определенный сайт и обработать ответ. libcurl

CURL* curl = curl_easy_init(); 
	CURLcode code; 
 
	curl_slist* list = nullptr; 
 
	list = curl_slist_append(list, "content-type: application/x-www-form-urlencoded; charset=UTF-8"); 
	list = curl_slist_append(list, "content-length: 66"); 
	list = curl_slist_append(list, "accept: application/json, text/javascript, */*; q=0.01"); 
	list = curl_slist_append(list, "cookie: PHPSESSID=3323cac7000a759fb892954066845418; _ga=GA1.2.1359388333.1562388670; _gid=GA1.2.2102115529.1562388671; SERVERID108284=104013"); 
	list = curl_slist_append(list, "referer: https://www.dcode.fr/unicode-coding"); 
	list = curl_slist_append(list, "origin: https://www.dcode.fr"); 
 
	if (curl) 
	{ 
		curl_easy_setopt(curl, CURLOPT_URL, "https://www.dcode.fr/unicode-coding"); 
		curl_easy_setopt(curl, CURLOPT_USERAGENT, "Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/74.0.3729.169 YaBrowser/19.6.1.153 Yowser/2.5 Safari/537.36"); 
		curl_easy_setopt(curl, CURLOPT_COOKIEJAR, fopen("cookie.txt", "w")); 
		curl_easy_setopt(curl, CURLOPT_COOKIEFILE, fopen("cookie.txt", "w")); 
		curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, true); 
		curl_easy_setopt(curl, CURLOPT_HTTPHEADER, list); 
		curl_easy_setopt(curl, CURLOPT_POST, true); 
		curl_easy_setopt(curl, CURLOPT_POSTFIELDS, "tool=unicode-coding&ciphertext=%5Cu0442%5Cu044012&output=hexadecimal"); 
		code = curl_easy_perform(curl); 
		if (code == CURLE_OK) 
		{ 
			std::cout << "OK"; 
		} 
		else 
			std::cout << "NO"; 
		curl_easy_cleanup(curl); 
	} 
	getchar();