How to recognize what is, and what is not tail recursion?

Question

Sometimes it\'s simple enough (if the self call is the last statement, it\'s tail recursion), but there are still cases that confuse me. A professor told me that \"if there\

Answer 1

All your functions are tail recursive.

no instruction left after the self-call

means: After the self-call, you return from the function, i.e. no more code has to be executed, and not that there is no more line of code in the function.