destructor

[Ramkey]

I was asked in a test
class A{
A ~A{
cout << "A's destructor";
}
};

int main(void){
A Aobj;
Aobj.~A;
}

What will be the output?

I wrote "A's destructor";
I think it may also be "A's destructor" "A's destructor:(twice).I
didnt run the program.What will be the output and why?

Thanks

[Dyziek]

Ramkey pisze:

I was asked in a test
class A{
A ~A{
cout << "A's destructor";
}
};

int main(void){
A Aobj;
Aobj.~A;
}

it shouldn't be:
class A {
~A() {
cout << "A's destructor";
}

int main(void) {
A Aobj;
Aobj.~A();
}

?? (missing "()" )

if so, there is error in "Aobj.~A();" , because A's destructor is private

if it would be public, this program should display:
"A's destructorA's destructor"
because of
1) "manually" run Aojb destructor
2) automatic destruction of Aobj
sorry for my english, Martin, PL

[Rolf Magnus]

Ramkey wrote:

I was asked in a test
class A{
A ~A{
cout << "A's destructor";
}
};

int main(void){
A Aobj;
Aobj.~A;
}

What will be the output?

I wrote "A's destructor";
I think it may also be "A's destructor" "A's destructor:(twice).I
didnt run the program.What will be the output and why?

Ignoring the syntax errors in your code, the output is undefined. Attempting
to destroy an object twice has undefined behavior.

[Dyziek]

Rolf Magnus pisze:

Ramkey wrote:

Ignoring the syntax errors in your code, the output is undefined. Attempting
to destroy an object twice has undefined behavior.

it is not destroying object twice, it is running its destructor twice.
object is destroyed only once.

[Rolf Magnus]

Dyziek wrote:

Rolf Magnus pisze:

>Ramkey wrote:

Ignoring the syntax errors in your code, the output is undefined.
Attempting to destroy an object twice has undefined behavior.

it is not destroying object twice, it is running its destructor twice.

That's what "destroying the object" means.

object is destroyed only once.

No. Its memory is deallocated once.

[Dyziek]

Rolf Magnus pisze:

Dyziek wrote:

>Rolf Magnus pisze:
it is not destroying object twice, it is running its destructor twice.

That's what "destroying the object" means.

>object is destroyed only once.

No. Its memory is deallocated once.

maybe you are right