Question

I had a constructor in my AB.h file:

class AB{
private: int i;
public:
AB:i(0){}//constructor
~AB:i(0){} // destructor
virtual void methodA(unsigned int value)=0;};

The compiler said that:

class AB has virtual functions but non-virtual destructor
AB.h: In destructor ‘AB::~AB()’:
AC.h: error: only constructors take base initializers

if I use the ~AB(); destructor, it said that i have virtual functions but i didn’t have destructor, where did I misunderstand?
Thankyou

Answer 1

You’re getting an error and an unrelated warning.

The error is because you’re using an initializer for your destructor, which doesn’t make sense and isn’t valid syntax.

You want:

~AB() { } // destructor

The warning is because you haven’t declared your destructor virtual. Classes with virtual methods should have virtual destructors:

virtual ~AB() { }