text: // call to redefining function
  
  #include "0053.h"
  
  class MyClassDeriveD : public MyClassDerive {
   public:
    int foo() { return 1; }
  };
  
  int main(int argc, char *argv[]) {
    MyClass *m = new MyClassDeriveD();
    m->foo();
  
    return 0;
  }
  