[flohofwoe]

That doesn't mean that it was used primarily with C++ though. IIRC Watcom C/C++ mainly became popular because of Doom, and that was written in C (as all id games until Doom 3 in 2004 - again IIRC though).

The actual killer feature of Watcom C/C++ was not the C or C++ compiler, but its integration with DOS4GW.

[wqweto]

Btw, dont’t remember Turbo C or Borland C++ to be able to compile to 32-bit x86 on DOS

[jasomill]

Borland C++, Microsoft C/C++, and GCC (DJGPP[1]) could all target 32-bit extended DOS, but Watcom was the first[2] to bundle a royalty-free DOS extender[3].

[1] https://news.ycombinator.com/item?id=39038095

[2] https://www.os2museum.com/wp/watcom-win386/

[3] https://en.wikipedia.org/wiki/DOS_extender