int main(void) {
  /* CODE FOR TESTING "sameDate" */
  /* --------------------------- */
  date_t a, b;
  a.day=17;
  a.month=12;
  a.year = 2014;
  b.day=17;
  b.month=12;
  b.year=2013;
  printf("----------------------------------------------------------------------------\n");
  printf("sameDate(a,b) returns %d (should be 0) when called with initial vals for a,b.\n", sameDate(a,b)); 
  b.year=2014;
  printf("sameDate(a,b) returns %d (should be 1) when called with second vals of a,b.\n", sameDate(a,b));
  b.day=16;
  printf("sameDate(a,b) returns %d (should be 0) when called with third vals of a,b.\n", sameDate(a,b));
 /* END OF CODE FOR TESTING "sameDate" */ 
 /* ---------------------------------- */
 if (initialiseDB("flightList.txt")) {
   printf("--------------------------\n");
   printf("Initialisation successful.\n");
 }
  /* CODE FOR TESTING "cheapestDirectFlight" */
  /* --------------------------------------- */
  int t1 = cheapestDirectFlight("DUB", "EDI", a);
  printf("-------------------------------------------------------\n");
  printf("Test1 of cheapestDirectFlight returns %d, should be -1.\n",t1);
  t1 = cheapestDirectFlight("EDI", "DUB", b);
  printf("Test2 of cheapestDirectFlight returns %d, should be 3.\n",t1);
  t1 = cheapestDirectFlight("MAN", "NCE", a);
  printf("Test3 of cheapestDirectFlight returns %d, should be 27.\n",t1);
  /* END OF CODE FOR TESTING "cheapestDirectFlight" */
  /* ---------------------------------------------- */
  /* CODE FOR TESTING "connectingPair" */
  /* --------------------------------------- */
  printf("------------------------------------------------\n");
  t1= connectingPair(allflights[25], allflights[27]);
  printf("Test1 of connectingPair returns %d, should be 0.\n",t1);
  t1= connectingPair(allflights[24], allflights[27]);
  printf("Test2 of connectingPair returns %d, should be 0.\n",t1);
  t1= connectingPair(allflights[23], allflights[27]);
  printf("Test3 of connectingPair returns %d, should be 1.\n",t1);
  t1= connectingPair(allflights[24], allflights[22]);
  printf("Test4 of connectingPair returns %d, should be 0.\n",t1);
  /* END OF CODE FOR TESTING "connectingPair" */
  /* ---------------------------------------- */
  /* CODE FOR TESTING "bestTransferOption" */
  /* ------------------------------------- */
  pair_t conn;
  conn = bestTransferOption("EDI", "NCE", a);

  printf("------------------------------------------------------------\n");
  printf("Test1 of bestTransferOptions returns %d, %d;   should be 2, 8.\n",conn.first, conn.second);
  conn = bestTransferOption("NCE", "DUB", a);
  printf("Test2 of bestTransferOptions returns %d, %d; should be -1, -1.\n",conn.first, conn.second);
  conn = bestTransferOption("SNN", "ORK", b);
  printf("Test3 of bestTransferOptions returns %d, %d; should be 12, 30.\n",conn.first, conn.second);
  conn = bestTransferOption("HAM", "NCE", a);
  printf("Test4 of bestTransferOptions returns %d, %d;  should be 35, 8.\n",conn.first, conn.second);
  conn = bestTransferOption("SNN", "LHR", b);
  printf("Test5 of bestTransferOptions returns %d, %d; should be -1, -1.\n",conn.first, conn.second);
  /* 6th test addded to clarify whether bestTransferOptions should
   * consider connecting pairs that fly on different dates */  
  conn = bestTransferOption("SNN", "GLA", b);
  printf("Test6 of bestTransferOptions returns %d, %d; should be -1, -1.\n",conn.first, conn.second);
  /* END OF CODE FOR TESTING "bestTransferOption" */
  /* -------------------------------------------- */
  return EXIT_SUCCESS;
}