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  1. #include <iostream>
  2.  
  3. class Base {
  4. public:
  5.     int num;
  6.     Base(int a = 100): num(a) {}
  7.     Base* base;
  8.     virtual void print() = 0;
  9. };
  10.  
  11. class Derived : public Base {
  12. public:
  13.     int bnum;
  14.     Derived(int b = 200): bnum(b) {}
  15.     virtual void print() { std::cout << bnum; }
  16. };
  17.  
  18. int main() {
  19.     Derived a;
  20.     a.base = &a;
  21.     a.base->print();
  22. }
Success #stdin #stdout 0s 2852KB
comments (?)
stdin 
Standard input is empty
stdout 
200
https://ideone.com/YoJE2x
language:
C++ (gcc 8.3)
created:
11 years ago
visibility:
secret

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