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  1. #include <iostream>
  2.  
  3. using namespace std;
  4.  
  5. class B{
  6.  
  7. public:
  8.  
  9.     virtual void f(){cout << "f() - B" << endl;}
  10.     virtual void h() = 0;
  11.     virtual ~B(){cout << "~B() destructor" << endl;}
  12.  
  13. protected:
  14.  
  15.     int b;
  16. };
  17.  
  18. class D1: virtual public B{
  19.  
  20. public:
  21.  
  22.     void f(){cout << "f() - D1" << endl;}
  23.     virtual ~D1(){cout << "~D1() destructor" << endl;}
  24.  
  25. protected:
  26.  
  27.     int d1;
  28. };
  29.  
  30. class D2: virtual public B{
  31.  
  32. public:
  33.  
  34.     void f(int i){cout << "f(" << i << ") - D2" << endl;}
  35.     virtual void h(){cout << "h() - D2" << endl;}
  36.     virtual ~D2(){cout << "~D2() destructor" << endl;}
  37.  
  38. protected:
  39.  
  40.     int d2;
  41. };
  42.  
  43. class D3: public D1{
  44.  
  45. public:
  46.  
  47.     void h(){cout << "h() - D3" << endl;}
  48.  
  49. private:
  50.  
  51.     int d3;
  52. };
  53.  
  54. class D4: public D1, public D2{
  55.  
  56. public:
  57.  
  58.     using D1::f; using D2::f;
  59.  
  60.     virtual ~D4(){cout << "~D4() destructor" << endl;}
  61.  
  62. private:
  63.  
  64.     int d4;
  65. };
  66.  
  67. int main()
  68. {
  69.     B *pB;
  70.     pB = new D4;
  71.     dynamic_cast<D4*>(pB)->f(3);
  72.     delete pB;
  73. }
Success #stdin #stdout 0s 15240KB
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stdin
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Standard input is empty
stdout
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f(3) - D2
~D4() destructor
~D2() destructor
~D1() destructor
~B() destructor
https://ideone.com/HTQaZG
language:
C++ (gcc 8.3)
created:
8 years ago
visibility:
public

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