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#include <iostream>
using namespace std;
 
class A{
	virtual ~A()=0;
};
 
class B: public A{
 
 
};
 
int main() {
	// your code goes here
	return 0;
}

prog.cpp:8:7: error: deleted function ‘virtual B::~B()’
 class B: public A{
       ^
prog.cpp:5:10: error: overriding non-deleted function ‘virtual A::~A()’
  virtual ~A()=0;
          ^
prog.cpp:8:7: note: ‘virtual B::~B()’ is implicitly deleted because the default definition would be ill-formed:
 class B: public A{
       ^
prog.cpp:8:7: error: ‘virtual A::~A()’ is private within this context
prog.cpp:5:10: note: declared private here
  virtual ~A()=0;
          ^

Standard output is empty