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  1. #include <iostream>
  2.  
  3. class Foo {
  4. public:
  5.     Foo(int a) : m_a(a) {};
  6.     virtual ~Foo() {};
  7.  
  8.     void PrintValue() {
  9.         std::cout << Value() << std::endl;
  10.     }
  11. protected:
  12.     virtual int Value() {
  13.         return m_a;
  14.     }
  15. private:
  16.         int m_a;
  17.     };
  18.  
  19. class Bar : public Foo
  20. {
  21. public:
  22.     Bar(int a, int b) : Foo(a), m_b(b) {};
  23.     virtual ~Bar() {};
  24.  
  25.     int Value() override {
  26.         return m_b;
  27. 	}
  28. private:
  29. 	int m_b;
  30. };
  31.  
  32. int main(int argc, char** argv)
  33. {
  34. 	Bar b(10, 20);
  35.     b.PrintValue();
  36. 	std::cout << b.Value() << std::endl;
  37.     return 0;
  38. }
Success #stdin #stdout 0s 3412KB
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20
20
https://ideone.com/dtdaij
language:
C++ (gcc 8.3)
created:
10 years ago
visibility:
public

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