I started programming on Extended Color Basic for Tandy COCO II when I was ~7 after browsing the computer's manual (They put programming information in manuals back then). Switched to QBasic on DOS and eventually Turbo C++ on DOS. Everyone pretty much used BIOS and OS interrupts to do anything useful in DOS.
It took me awhile to move to windows because nothing could produce fast graphics until DirectX came out, and DirectX 3.0 was a completely different beast in early windows 95. I'm highly amused APIs like Vulkan are coming around because I remember DirectX 3.0 having an immediate mode where you created command ques and similar ideas but they decided to move away from them in 5.0 (Never had a 4.0 DX).
I do programming for a living now on AntiVirus software and as a hobby. I guess I've been programming 28 years in general and probably about 22 in C++. I had no schooling, just picked it up on my own.