bigpingo
AI will blow my mind when it solves an unsolved mathematical/physics/scientific problem, i.e: "AI, give me a proof for (or against) the Riemann hypothesis"
* C++ requires some discipline to not explode build times, but it can be done if you dont go nuts with templates and standard headers.
C should issue a defect report and get rid of that nonsense from the standard.
"+ can do anything!" As you said, so can plus().
"Hidden function calls?" Have they never programmed a soft float or microcontroller without a div instruction? Function calls for every floating point op.
When it comes to autocomplete specifically I initially turned it off because I was mainly a C++ programmer and C++ autocomplete has just never been good enough and a half-working autocomplete is just worse than nothing at all because you end up stalling and waiting for the prompt. But eventually I just grew to hate it for all languages because it interrupts flow and "pipelining".
printf("%.*s", len, str);
lets you pass the length as an int argument.