Working with UUIDs on windows (with Rpc.h)

uuid_demo.c

#define WIN32_LEAN_AND_MEAN
#define NOGDI

#include <windows.h>
#include <Rpc.h>
#include <stdio.h>

int main(int argc, char** argv)
{
  UUID uuid;
  unsigned char *uuidStr;

  if(UuidCreate(&uuid) != RPC_S_OK)
    {
      fprintf(stderr,"Unable to create UUID!\n");
      exit(1);
    }
  if(UuidToStringA(&uuid, &uuidStr) != RPC_S_OK)
    {
      fprintf(stderr,"Unable to format UUID as string!\n");
      exit(1);
    }

  printf("Generated UUID: %s\n", uuidStr);

  if(RpcStringFreeA(&uuidStr) != RPC_S_OK)
    {
      fprintf(stderr,"Failed to free UUID display string!\n");
      exit(1);
    }
}