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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. class Base
  5. {
  6. private:
  7.     int m_a;
  8. public:
  9.     Base(int a): m_a(a) { }
  10.     Base operator+(const Base& rhs) { return Base(m_a + rhs.m_a); }
  11.     void print() { cout << m_a; }
  12. };
  13. class A: public Base
  14. {
  15. private:
  16.     int m_b;
  17.     A(Base base, int b): Base(base), m_b(b) { }
  18. public:
  19.     A(int a, int b): Base(a), m_b(b) { }
  20.     A operator+(const A& rhs) { return A(Base::operator+(rhs), m_b + rhs.m_b); }
  21.     void print() { Base::print(); cout << " " << m_b; }
  22. };
  23.  
  24.  
  25. int main()
  26. {
  27. 	A a1(1, 2), a2(3, 4);
  28. 	A sum = a1 + a2;
  29. 	sum.print();
  30.     return 0;
  31. }
Success #stdin #stdout 0s 3340KB
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Standard input is empty
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4 6
https://ideone.com/0ADTj1
language:
C++14 (gcc 8.3)
created:
10 years ago
visibility:
public

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