I started with DOS at work I think in the late 80s,
eventually I picked up a 286 for use at home. Not long
afterwards I went to Coherent/286. Eventually I went to
a 386/SX for use with Coherent/386 then to Slackware Linux.
Alongside with IN/ix, I also learned some c on this system
using Zortech c version 1 (not c++). Zortech c had one
thing that was very nice, it had a series of functions
that started with "disp", these were clones of printf,
getc with cursor positioning. With these I was able to
create a series of nice interactive utilities.