C++: Do we have any way to access private members functions of a class from outside of class?

Answer 1

You can play some dirty pointer trick (ie access a public member and move the pointer) but that is a undefined behaviour and one should not do that.

So simple answer is You can not. That member is private, it's not visible outside the class and the whole purpose of having private is to remain visible inside the class.

Answer 2

Yes we can access private members functions using any public members functions of those class.

Comments

Question is about from different class

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Yes the above process can be called in also different class.