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  1. #include <iostream>
  2.  
  3. struct Foo { virtual const char * who() = 0; };
  4. struct Bar : Foo { virtual const char * who() { return "Bar"; } };
  5. struct Baz : Foo { virtual const char * who() { return "Baz"; } };
  6. struct Qux : Bar, Baz { };
  7.  
  8. int main()
  9. {
  10.     Qux * qux = new Qux();
  11.     // Foo * foo = qux; // compile-time error, ambiguous
  12.     Bar * bar = qux;
  13.     Foo * foo = bar;
  14.  
  15.     std::cout << static_cast<Baz *>(foo)->who() << " at "
  16.               << static_cast<Baz *>(foo) << "\n";
  17.     std::cout << dynamic_cast<Baz *>(foo)->who() << " at "
  18.               << dynamic_cast<Baz *>(foo) << "\n";
  19.  
  20.     delete qux;
  21.     return 0;
  22. }
  23.  
Success #stdin #stdout 0s 3028KB
comments (?)
stdin
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Standard input is empty
stdout
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Bar at 0x8f7c008
Baz at 0x8f7c00c
https://ideone.com/pFmjqU
language:
C++ (gcc 8.3)
created:
11 years ago
visibility:
public

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