struct dm{  unsigned q;  unsigned r;};struct dmdm (a, b)     unsigned a, b;{  struct dm qr;  qr.q = a / b;  qr.r = a % b;  return qr;}main (){  struct dm qr;  qr = dm (100, 30);  printf ("%u, %u\n", qr.q, qr.r);}