Regardless of if you're coding in C or C++ for micros, you're not going to be using much, if any, of the standard library anyways. You'll probably be rolling yo

Regardless of if you're coding in C or C++ for micros, you're not going to be using much, if any, of the standard library anyways. You'll probably be rolling your own routines for a lot of stuff because so many libraries, even those for micros, are rather oversized for when you're truly constrained. I've used templates in C++ libraries for the purposes of varying memory constraints and mcu capabilities. Being able to write a library once and deploy it on 8 bit and 32 bit chips without FPUs and chips with fpus means saving a lot of time, and it writes code that's just as efficient. Finally, a lot of C/C++ compilers for small devices have routines to give a pretty good guess as to how much RAM your code's going to need, so you can figure out ahead of time if a routine is really worth it.