//For complete examples and data files, please go to https://github.com/aspose-cells/Aspose.Cells-for-C

//Path of input excel file
StringPtr sampleGroupingUngroupingRowsAndColumns = dirPath->StringAppend(new String("sampleGroupingUngroupingRowsAndColumns.xlsx"));

//Path of output excel file
StringPtr outputGroupingUngroupingRowsAndColumns = outPath->StringAppend(new String("outputGroupingUngroupingRowsAndColumns.xlsx"));

//Read input excel file
intrusive_ptr<IWorkbook> workbook = Factory::CreateIWorkbook(sampleGroupingUngroupingRowsAndColumns);

//Accessing the second worksheet in the Excel file
intrusive_ptr<IWorksheet> worksheet = workbook->GetIWorksheets()->GetObjectByIndex(1);

//UnGroup first seven rows and first four columns
worksheet->GetICells()->UngroupRows(0, 6);
worksheet->GetICells()->UngroupColumns(0, 3);

//Save the Excel file.
workbook->Save(outputGroupingUngroupingRowsAndColumns);