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  1. /// illustrating http://stackoverflow.com/a/99622/2932052
  2. #include <iostream>
  3. using namespace std;
  4.  
  5. class A
  6. {
  7.   A *pThis;
  8.   public:
  9.   A()
  10.    : pThis(this)
  11.   {
  12.   }
  13.  
  14.   void callFoo()
  15.   {
  16.     pThis->foo(); // call through the pThis ptr which was initialized in the constructor
  17.   }
  18.  
  19.   virtual void foo() = 0;
  20. };
  21.  
  22. class B : public A
  23. {
  24. public:
  25.   virtual void foo()
  26.   {
  27.   }
  28. };
  29.  
  30. int main() {
  31. 	// your code goes here
  32. 	B b;
  33. 	b.callFoo();
  34. 	return 0;
  35. }
Success #stdin #stdout 0s 3136KB
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https://ideone.com/5zi4Kc
language:
C++ (gcc 8.3)
created:
8 years ago
visibility:
public

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