example of late binding with c++

late-binding.cpp

#include <iostream>

struct Foo {
   virtual int retrieve() = 0;
};

struct Bar : public Foo {
   inline int retrieve() {
      return 1;
   }
};

struct Baz : public Foo {
   inline int retrieve() {
      return 2;
   }
};

int main() {
   Bar bar;
   Baz baz;

   /* outputs "1 2" because of late binding */
   std::cout
      << bar.retrieve() << " "
      << baz.retrieve() << std::endl;

   return 0;
}