[CSI] Increment and Decrement Reminder

[Mikhail Nesterenko]

> Good evening Professor Nesterenko,
> 
> You mentioned in class that you wanted to send us something regarding increment/decrement and short code. Have a great night!
> 


This will make sense in CSIB but take a look at fancy use of the
suffix form of the increment here:

   https://www.techiedelight.com/implement-strcpy-function-c/

Especially in the last "shortest" version.

Thanks,
-- 
Mikhail