fork download
copy 
  1. #include <iostream>
  2. using namespace std;
  3.  
  4.  
  5. struct IBase
  6. {
  7.     virtual bool foo()const=0;
  8. };
  9.  
  10. struct IDer: IBase
  11. {
  12.     virtual bool baz1()const=0;
  13.     virtual bool baz2()const=0;
  14. };
  15.  
  16. struct Standart: IBase
  17. {
  18.     virtual bool foo()const { cout<<"Standart:foo\n"; return false; }
  19. };
  20. struct Der: Standart
  21. {
  22.     virtual bool baz2()const { cout<<"Der:baz2\n"; return false; }
  23.     //virtual bool baz1()const { cout<<"Der:baz1\n"; return false; }
  24. };
  25.  
  26. int main()
  27. {
  28.     std::cout << "Hello, world!\n";
  29.  
  30.     Der d;
  31.  
  32.     //не работает потому что IDer не является частью иерархии Der
  33.     //IDer& id  = static_cast<IDer&>(d);
  34.  
  35.  
  36.     IDer& id  = reinterpret_cast<IDer&>(d);
  37.  
  38.     id.baz1();
  39.     id.baz2();
  40.     id.foo();
  41. }
Runtime error #stdin #stdout 0s 3340KB
comments (?)
stdin
copy 
Standard input is empty
stdout
copy 
Standard output is empty
https://ideone.com/z0bAgC
language:
C++ (gcc 8.3)
created:
10 years ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!