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  1. #include <iostream>
  2. #include <typeinfo>
  3. using namespace std;
  4.  
  5. struct Foo { virtual Foo* c() {return this;} };
  6. struct Bar : public Foo { Bar* c() {return this;} };
  7.  
  8. int main() {
  9. 	Foo f;
  10. 	Foo* fp;
  11. 	Bar b;
  12. 	Bar* bp;
  13.  
  14. 	cout << typeid(f).name() << "\n";
  15. 	cout << typeid(fp).name() << "\n";
  16. 	cout << typeid(b).name() << "\n";
  17. 	cout << typeid(bp).name() << "\n";
  18. 	cout << typeid(f.c()).name() << "\n";
  19. 	cout << typeid(b.c()).name() << "\n";
  20.  
  21. 	fp = &f;
  22. 	bp = &b;
  23.  
  24. 	cout << typeid(fp->c()).name() << "\n";
  25. 	cout << typeid(bp->c()).name() << "\n";
  26.  
  27. 	fp = &b;
  28.  
  29. 	cout << typeid(fp->c()).name() << "\n";
  30. 	cout << typeid(*fp->c()).name() << "\n";
  31.  
  32. 	return 0;
  33. }
Success #stdin #stdout 0s 3340KB
comments (?)
stdin
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Standard input is empty
stdout
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3Foo
P3Foo
3Bar
P3Bar
P3Foo
P3Bar
P3Foo
P3Bar
P3Foo
3Bar
https://ideone.com/kC93w8
language:
C++14 (gcc 8.3)
created:
9 years ago
visibility:
public

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