Question

What happens as a result of an attempt of dynamic_cast:

#include 
using namespace std;

class A{
public:
	virtual ~A() {}
};

class B: public A{ };

int main(){
	A * a = new A();
	try{
		B * b = dynamic_cast(a);
	}catch(...){		
	}	
	return 0;
}

Cosmo · Accepted Answer

Pointer b will be set to null

Cosmo · Answer

std::bad_cast will be thrown

Cosmo · Answer

Undefined behvaiour

Cosmo · Answer

Pointer b will not be initialized

Cosmo · Answer

Pointer b will be initialized with address of a

Cosmo · Answer

Runtime error

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