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  1. #include<iostream>
  2. using namespace std;
  3.  
  4. struct Abstract {
  5.     virtual void pure() = 0;
  6.     virtual void foo() {
  7.         pure();
  8.     }
  9.     Abstract() {
  10.         foo();
  11.     }
  12.     ~Abstract() {
  13.         foo();
  14.     }
  15. };
  16.  
  17. struct X : public Abstract {
  18.     virtual void pure() { cout << " X :: pure() " << endl; }
  19.     virtual void impure() { cout << " X :: impure() " << endl; }
  20. };
  21. int main() {
  22.     X x;
  23. }
Runtime error #stdin #stdout 0.02s 2720KB
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Standard input is empty
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Standard output is empty
https://ideone.com/6FhYv
language:
C++ (gcc 8.3)
created:
12 years ago
visibility:
public

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