THis article describes How to extend tHe default calculation engine by implementing a custom calculation engine using tHe Aspose.Cells library witH C++. By loading an existing Excel file or creating a new one, we can use tHe metHods provided by Aspose.Cells to implement a custom calculation engine and get tHe results. Finally, we save tHe modified Excel file to disk....h" #include <chrono> using namespace...