_osver, _winmajor, _winminor, _winver

These variables store build and version numbers of the 32-bit Windows operating systems. Declarations for these variables in STDLIB.H are as follows:

externunsignedint_osver;

externunsignedint_winmajor;

externunsignedint_winminor;

externunsignedint_winver;

These variables are useful in programs that run in different versions of Windows NT or Windows 95.