The centralindex C module allows developers to start using the Central Index API with minimal code. The Central Index is a global data exchange, with a simple REST/JSON api.

• Read up on what Central Index is here http://centralindex.com/
• Read up on the developer API here http://developer.centralindex.com/
• Sign up for a Mashery account, if you don't have one already http://developer.centralindex.com/member/register
• Sign up for an API key here http://developer.centralindex.com/apps/register

You'll need to put the CentralIndex.c and CentralIndex.h file alongside your code together with [http://curl.haxx.se/libcurl/](the libcurl library)

Then your first script could look something like:

int main() {

   // set debug mode on
   set_debug_mode(1);

   // set the api key
   set_api_key("<insert api key here>");
   
   // fetch an entity
   char *retval = getEntity("379236608286720");
   
   if(retval != NULL) {
     printf("%s",retval);
     free(retval);  
   } else {
     printf("Failed!");    
   }
}

See the API Docs for more information.