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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. class a
  5. {
  6.  
  7.  
  8. public:
  9.     a(void)
  10.     {
  11.         cout<<"a defaut ctor"<<endl;
  12.     }
  13.     a(int i)
  14.     {
  15.         cout<<"a custom ctor "<<i<<endl;
  16.     }
  17. };
  18. class b : public a
  19. {
  20. public:
  21.     b(void)
  22.     {
  23.         cout<<"b defaut ctor"<<endl;
  24.     }
  25.     b(int i) : a(i)
  26.     {
  27.         cout<<"b custom ctor "<<i<<endl;
  28.     }
  29. };
  30.  
  31. int main()
  32. {
  33.     b B1;
  34.     b B2(5);
  35.  
  36.     return 0;
  37. }
  38.  
Success #stdin #stdout 0s 2896KB
comments (?)
stdin 
Standard input is empty
stdout 
a defaut ctor
b defaut ctor
a custom ctor 5
b custom ctor 5
https://ideone.com/hWnjwz
language:
C++14 (gcc 8.3)
created:
12 years ago
visibility:
public

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