Read Excel file in C++

Home Documentation Writing Reading Pictures1 Pictures2 Formulas DateTime SheetByName
Merging Grouping InsertRowCol NumFormats Formats Fonts Buffer1 Buffer2 Copying TopNFilter
Sorting StringFilter NumberFilter FilterByValues Protection Replacing RichString BeginWith
ColorScale OpRule AltRows

Reading data

This example reads data from all cells of sheet, detects type of cells and prints theirs values.

#include <iostream>
#include "libxl.h"

using namespace libxl;

int main() 
{
   Book* book = xlCreateBook();

   if(book->load(L"input.xls"))
   {
      Sheet* sheet = book->getSheet(0);
      if(sheet)
      {
         for(int row = sheet->firstRow(); row < sheet->lastRow(); ++row)
         {
            for(int col = sheet->firstCol(); col < sheet->lastCol(); ++col)
            {
               CellType cellType = sheet->cellType(row, col);
               std::wcout << "(" << row << ", " << col << ") = ";
               if(sheet->isFormula(row, col))
               {
                  const wchar_t* s = sheet->readFormula(row, col);
                  std::wcout << (s ? s : L"null") << " [formula]";
               }
               else
               {
                  switch(cellType)
                  {
                     case CELLTYPE_EMPTY: std::wcout << "[empty]"; break;
                     case CELLTYPE_NUMBER:
                     {
                        double d = sheet->readNum(row, col);
                        std::wcout << d << " [number]";
                        break;
                     }
                     case CELLTYPE_STRING:
                     {
                        const wchar_t* s = sheet->readStr(row, col);
                        std::wcout << (s ? s : L"null") << " [string]";
                        break;        
                     }
                     case CELLTYPE_BOOLEAN:
                     {
                        bool b = sheet->readBool(row, col);
                        std::wcout << (b ? "true" : "false") << " [boolean]";
                        break;
                     }
                     case CELLTYPE_BLANK: std::wcout << "[blank]"; break;
                     case CELLTYPE_ERROR: std::wcout << "[error]"; break;
                  }
               }
               std::wcout << std::endl;
            }
         }
      }
   }

   book->release();
   return 0;
}