How to Convert JSON Objects to XML using C/C++

Data conversions should extremely simple and equally fast. Using the below code, you can rapidly convert your JSON data to XML format in a quick API request — and you can do so for free with a free-tier API key.

Start by installing libcurl in your project:

libcurl/7.75.0

And then use the below code to structure your request:

CURL *curl;
CURLcode res;
curl = curl_easy_init();
if(curl) {
     curl_easy_setopt(curl, CURLOPT_CUSTOMREQUEST, "POST");
     curl_easy_setopt(curl, CURLOPT_URL, "https://api.cloudmersive.com/convert/json/to/xml");
     curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, 1L);
     curl_easy_setopt(curl, CURLOPT_DEFAULT_PROTOCOL, "https");
     struct curl_slist *headers = NULL;
     headers = curl_slist_append(headers, "Content-Type: application/x-www-form-urlencoded");
     headers = curl_slist_append(headers, "Apikey: YOUR-API-KEY-HERE");
     curl_easy_setopt(curl, CURLOPT_HTTPHEADER, headers);
     const char *data = "0=%3C&1=o&2=b&3=j&4=e&5=c&6=t&7=%3E";
     curl_easy_setopt(curl, CURLOPT_POSTFIELDS, data);
     res = curl_easy_perform(curl);
}
curl_easy_cleanup(curl);

You can now make up to 800 conversions per month with no additional commitment whatsoever. Easy!