BINTREE *createBinTreeLR()
{
char lstr[20];
char rstr[20];
FILE *file = fopen("input.txt", "r");
myscanf(file, "%s%s", lstr, rstr);
int n = strlen(lstr);
BINTREENODE *root = subCreate(lstr, rstr, n);
BINTREE *bt;
bt = malloc(sizeof(BINTREE));
memset(bt, 0, sizeof(BINTREE));
bt->root = root;
return bt;
}
void AddNewX() {
// Define ADO object pointers. Initialize pointers on define.
_RecordsetPtr pRstEmployees = NULL;
_ConnectionPtr pConnection = NULL;
// Define Other variables
IADORecordBinding *picRs = NULL; // Interface Pointer declared.(VC++ Extensions)
CEmployeeRs emprs; // C++ class object
HRESULT hr = S_OK;
// Replace Data Source value with your server name.
_bstr_t strCnn("Provider='sqloledb'; Data Source='My_Data_Source'; Initial Catalog='pubs'; Integrated Security='SSPI';");
_bstr_t strId;
_bstr_t strMessage;
try {
// Open a connection
TESTHR(pConnection.CreateInstance(__uuidof(Connection)));
pConnection->Open(strCnn, "", "", adConnectUnspecified);
// Open employee table
TESTHR(pRstEmployees.CreateInstance(__uuidof(Recordset)));
// You have to explicitly pass the Cursor type and LockType to the Recordset here
pRstEmployees->Open("employee", _variant_t((IDispatch *)pConnection, true),
adOpenKeyset, adLockOptimistic, adCmdTable);
// Open IADORecordBinding interface pointer for Binding Recordset to a class
TESTHR(pRstEmployees->QueryInterface(__uuidof(IADORecordBinding), (LPVOID*)&picRs));
// Bind the Recordset to a C++ Class here
TESTHR(picRs->BindToRecordset(&emprs));
// Get data from the user.The employee id must be formatted as first,middle and last
// initial, five numbers,then M or F to signify the gender. For example, the
// employee id for Bill A. Sorensen would be "BAS55555M".
printf("Enter Employee Id: ");
myscanf(emprs.m_sz_empid, sizeof(emprs.m_sz_empid));
strId = emprs.m_sz_empid;
printf("Enter First Name: ");
myscanf(emprs.m_sz_fname, sizeof(emprs.m_sz_fname));
printf("Enter Last Name:");
myscanf(emprs.m_sz_lname, sizeof(emprs.m_sz_lname));
// Proceed if user entered id, the first and the last name.
if (strcmp(emprs.m_sz_empid, "") && strcmp(emprs.m_sz_fname, "") && strcmp(emprs.m_sz_lname, "")) {
// This adds a new record to the table
// if (FAILED(hr = picRs->AddNew(&emprs)))
//_com_issue_error(hr);
TESTHR(picRs->AddNew(&emprs));
// Show the newly added data
printf("New Record: %s %s %s \n", \
emprs.lemp_empidStatus == adFldOK ? emprs.m_sz_empid : "<NULL>", \
emprs.lemp_fnameStatus == adFldOK ? emprs.m_sz_fname : "<NULL>", \
emprs.lemp_lnameStatus == adFldOK ? emprs.m_sz_lname : "<NULL>");
}
else
printf("Please enter an employee id, first name and last name.\n");
// Delete the new record because this is a demonstration.
pConnection->Execute("DELETE FROM EMPLOYEE WHERE emp_id = '" + strId + "'", NULL, adCmdText);
}
catch (_com_error &e) {
// Notify the user of errors if any.
_variant_t vtConnect = pRstEmployees->GetActiveConnection();
// GetActiveConnection returns connect string if connection
// is not open, else returns Connection object.
switch (vtConnect.vt) {
case VT_BSTR:
printf("Error:\n");
printf("Code = %08lx\n", e.Error());
printf("Message = %s\n", e.ErrorMessage());
printf("Source = %s\n", (LPCSTR)e.Source());
printf("Description = %s\n", (LPCSTR)e.Description());
break;
case VT_DISPATCH:
PrintProviderError(vtConnect);
break;
default:
printf("Errors occured.");
break;
}
}
// Clean up objects before exit. Release the IADORecordset Interface here
if (picRs)
picRs->Release();
if (pRstEmployees)
if (pRstEmployees->State == adStateOpen)
pRstEmployees->Close();
if (pConnection)
if (pConnection->State == adStateOpen)
pConnection->Close();
}