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#include <iostream>
 
class Base
{
public:
    virtual ~Base()=0; // Pure virtual destructor
};
 
class Derived : public Base
{
public:
    ~Derived()
    {
        std::cout << "~Derived() is executed";
    }
};
 
int main()
{
    Derived d;
    return 0;
}

prog.cpp: In function ‘int main()’:
prog.cpp:20:18: error: expected primary-expression before ‘<<’ token
     Derived d;   <<<
                  ^~
prog.cpp:20:20: error: expected primary-expression before ‘<’ token
     Derived d;   <<<
                    ^
prog.cpp:21:5: error: expected primary-expression before ‘return’
     return 0;
     ^~~~~~

Standard output is empty