In QB64PE. Yeah. And who will maintain it and make it compatible? XLS and XLSX is proprietary file format. You have many alternatives that are free and do exactly the same job as Excel and Word, plus you have it in one package, with support and can even process XLS and XLSX files. Check out libreoffice.org
But if you really want to write a micro excel in qb64pe, there is nothing easier! Create a 2D array. And then cell B3 which in Excel would be: B3 = (A1 + C7) can easily be written in QB64PE as Cell(2,3) = Cell (1,1) + Cell (3,7) if A = 1, B = 2, C = 3 and so on.
Of course! This array must carry a lot of other information! The data type (is it a date, an integer, a decimal number, text, or a symbol...; the type of font used, border information and many other things!)
But if you really want to write a micro excel in qb64pe, there is nothing easier! Create a 2D array. And then cell B3 which in Excel would be: B3 = (A1 + C7) can easily be written in QB64PE as Cell(2,3) = Cell (1,1) + Cell (3,7) if A = 1, B = 2, C = 3 and so on.
Of course! This array must carry a lot of other information! The data type (is it a date, an integer, a decimal number, text, or a symbol...; the type of font used, border information and many other things!)

