Create an EAN-13 Barcode in C/C++

If your company sells products in Europe, you need an easy and efficient process to create an EAN-13 barcode, which is the European equivalent to the North American UPC-A barcode. By utilizing the following API in C/C++, you will be able to automatically validate and generate a PNG file of an EAN-13 barcode.

You can kick off the process by installing libcurl:

libcurl/7.75.0

Now, you can call the function by entering the barcode value and API key into the following example code:

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/barcode/generate/ean-13");
     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=s&2=t&3=r&4=i&5=n&6=g&7=%3E";
     curl_easy_setopt(curl, CURLOPT_POSTFIELDS, data);
     res = curl_easy_perform(curl);
}
curl_easy_cleanup(curl);

Done! To obtain an API key, head to the Cloudmersive website to register for a free account; this provides 800 calls/month across any of our APIs.