If I use a variable of type Int64, will it work on all Windows versions: win95, 98, 2000, nt, xp, vista, win7? No matter what OS it is 32bit or 64bit? And no matter what CPU they are using?
I just want to be sure, that my program will work on all Windows versions.
The size of datatypes provided by a language is not constrained by the operating system or hardware platform. I can have 64-bit integers on 32-bit platforms (or 16- or 8- or 11-bit, for that matter).