How to know the "calling function"

How do I know the "calling function" to a function. To make clear, I give examples.

void funcA ()


the from the same or other programs, there are some functions call "funcA()".
Now from "funcA()" itself, how do I know the name of the function which calls "funcA()" ?

Any help is appreciated.

I don't really get the idea ?
What is the use of the name of calling function ?

It might sound stupid, but
you can use

void funcA(String callingFunName)


Or if you want to know exact which function with how many argument other, and how it called your function funcA(), is may be not possible to know directly...
A function can not know what code did call it.
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