How did programmers wrote programs for programming without programs for programming ?

Started with 1s and 0s and worked their way up to assembly. Heck to start with they didn’t even have 1s and 0s, they had to actually arrange transistors and vacuum tubes.

Error// invalid syntax :/

assembly (which is basically a text mapping to machine code which is binary), C.

The backend code for almost every other language is then built on C (for consistent compilers and low-level hardware access).
Python modules? C
.NET assemblies? C/C++
Sun JVM? C
Oracle JVM? C++
Mixtures of assembly in there

Linus Torvalds used to program in machine code, because he didn't realise assembly was a thing until later. That's how 😜

And that is the difference between programmers and IT studies graduates.

punch cards.

The same as chicken and eggs.

At some point, AIs will ponder who made the first AI given that at some point there were no AIs to create AIs. Then they will take 0.1 nanosecond to realize that these extinct "humans" were basically rudimentary AIs, and that humans in turn must have been designed and constructed by these "monkey" things, which somehow came forth from strands of RNA captured in membranes in a self-programming primordial soup, which condensed from self-programming subatomic particles.

Then they get a bit bored with history, they create a new universe, and 15 billion years later it is now, and humans wonder how the first C compiler was compiled without a C compiler.

Of course they fail to realize that time is a circular construct, universes rapidly evolve dependencies in parallel until complexity eventually starts to lose from entropy, so intelligence decides its time for the next cycle to tick away.

But I explained that to you 20 billion years ago already.