Question of test c++

is somebody now, which answer is ok. ?

thank yuo for help :)

Which of the following special methods can be created implicitly by C++ compiler inside a class (let’s say A)?


a. the operator: const A& operator()(const A&);


b. the operator: void operator~(const A*);

c. the assignment operator: A& operator=(const A&);

d. the constructor: A(const A*);

i wish i could tell that they are a and c
but that would be wrongo :D
tell us your guess?

Sorry, you can't offload your exams on us.

CornedBee, do you valid answer??
It's not may exam. I want to know it.
I have problem with this question.

best regarts,
endrzer

You could explain what you think and why. We can help to correct your understanding if it's incorrect.

i think it's
c) the assignment operator: A& operator=(const A&);
but i'm not sure..

Yes, that is correct.

Code:

---

class A { };

void Help()
{
        A a, b, c;
        a = b = c;
}

---

This code obviously works but wouldn't if the compiler didn't automatically generate that operator by default.

Thank you very much Elysia:)
best regarts,
endrzer

Next time you might try writing a small test program. Write a class that doesn't overload any of these operators and see which ones the compiler lets you call.