node.cxx

#include <cstdio>

class Node 
{
public:
  virtual ~Node() {}
  virtual void print() { printf("in Node\n"); }
};

class HTMLObjectElement: public Node
{
public:
  virtual void print() { printf("in HTMLObjectElement\n"); }
};

static void getNodeInfo(Node node) {
  node.print();
}

int main(int argc, char* argv[]) {
  HTMLObjectElement  node;
  getNodeInfo(node);
  
  return 0;
}

X.c

void X(char* x, char *y) {
  while(*x++ = *y++);
}