#include int main() { xlnt::workbook wb; xlnt::worksheet ws = wb.active_sheet(); ws.cell("A1").value(5); ws.cell("B2").value("string data"); ws.cell("C3").formula("=RAND()"); ws.merge_cells("C3:C4"); ws.freeze_panes("B2"); wb.save("data/sample.xlsx"); return 0; }