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  1. class A
  2. {
  3. public:
  4. int a;
  5. };
  6.  
  7. class B
  8. {
  9. public:
  10. virtual void DoSomething() = 0;
  11. };
  12.  
  13.  
  14. class C: public A, public B
  15. {
  16. public:
  17. virtual void DoSomething()
  18. {
  19. a = 3; // ***
  20. }
  21. };
  22.  
  23. int main() {}
Success #stdin #stdout 0s 3336KB
stdin
Standard input is empty
stdout
Standard output is empty