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  1. #include <iostream>
  2.  
  3. class A {
  4. public:
  5.     A(){ std::cout << "A()\n"; }
  6.     A(const A& a){ std::cout << "A(const A&)\n"; }
  7.     ~A(){ std::cout << "~A()\n"; }
  8.     void foo(){ std::cout << "A::foo()\n"; }
  9. };
  10.  
  11. class B : public A {
  12. public:
  13.     B(){ std::cout << "B()\n"; }
  14.     B(const B& b){ std::cout << "B(const B&)\n"; }
  15.     B& operator=(const B& b){ std::cout << "B::operator=(const B&)\n"; return *this; }
  16.     ~B(){ std::cout << "~B()\n"; }
  17.     virtual void foo(){ std::cout << "B::foo()\n"; }
  18. };
  19.  
  20. class C : public B {
  21. public:
  22.     C(){ std::cout << "C()\n"; }
  23.     C& operator=(const C& c){ std::cout << "C::operator=(const C&)\n"; a_=c.a_; return *this; }
  24.     ~C(){ std::cout << "~C()\n"; }
  25.     void foo(){ std::cout << "C::foo()\n";  }
  26. protected:
  27.     A a_;
  28. };
  29.  
  30. int main()
  31. {
  32.     std::cout << "\tC c1:\n";
  33.     C c1;
  34.  
  35.     std::cout << "\n\n\tC c2(c1);\n";
  36.     C c2(c1);
  37.  
  38.     return 0;
  39. }
  40.  
Success #stdin #stdout 0s 3096KB
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stdin
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Standard input is empty
stdout
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	C c1:
A()
B()
A()
C()


	C c2(c1);
A()
B(const B&)
A(const A&)
~C()
~A()
~B()
~A()
~C()
~A()
~B()
~A()
https://ideone.com/vj2I9W
language:
C++14 (gcc 8.3)
created:
8 years ago
visibility:
public

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