fork download 
  1. #include <iostream>
  2. using namespace std;
  3. struct Base 
  4. {
  5. virtual ~Base()
  6. {};
  7. };
  8. struct Derived : public virtual Base {};
  9.  
  10. int main()
  11. {
  12.     Base* b = new Derived;
  13. #if 0
  14.    Derived* d = dynamic_cast<Derived*>(b);
  15. #else   
  16.   Derived* d = static_cast<Derived*>(b); 
  17. #endif  
  18.     cout << d << endl;
  19. }
Compilation error #stdin compilation error #stdout 0s 2984KB
comments (?)
stdin 
Standard input is empty
compilation info 
prog.cpp: In function ‘int main()’:
prog.cpp:16:39: error: cannot convert from base ‘Base’ to derived type ‘Derived’ via virtual base ‘Base’
stdout 
Standard output is empty
https://ideone.com/7sIT5y
language:
C++ (gcc 8.3)
created:
11 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!