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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. class A {
  5. 	public:
  6. 		virtual void x() {
  7. 			cout << 1;
  8. 		}
  9. };
  10.  
  11. class B : public A {
  12. 	public:
  13. 		virtual void x() {
  14. 			cout << 2;
  15. 		}
  16. };
  17.  
  18. int main() {
  19.  
  20. 	A *a;
  21. 	B b;
  22. 	a = &b;
  23. 	A a1 = b;
  24. 	cout << "a : ";
  25. 	a->x();
  26. 	cout << " b : ";
  27. 	b.x();
  28. 	cout << " a1 : ";
  29. 	a1.x();
  30.  
  31. 	return 0;
  32. }
  33.  
  34.  
Success #stdin #stdout 0s 15240KB
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stdin
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Standard input is empty
stdout
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a : 2 b : 2 a1 : 1
https://ideone.com/Lxygxx
language:
C++ (gcc 8.3)
created:
6 years ago
visibility:
public

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