void c_control::call_unit_function(void (*unit_function)()){	for (int i=0; i<sizeof(unit_tlist)/sizeof(*unit_tlist); i++)	{		if (unit_tlist==0){continue;}		unit_tlist->unit_function();	}}

class unit{public:	void draw_unit(){/*draw*/}};class controller{	void loop_units(unit_function)	{                for (/*loop*/)                {		       current_unit->unit_function();                }	}	void draw_units()	{		loop_units(unit::draw_unit);	}}

#include <iostream>#include <vector>#include <string>class unit{   std::string _name;public:   unit(std::string name) { _name = name; }   void draw_unit() { std::cout << _name << std::endl; }};class controller{   std::vector<unit> _units;   void loop_units(void (unit::*unit_function)())   {      for (int i = 0; i < _units.size(); i++)         (_units.*unit_function)();   } public:   void draw_units()   {      loop_units(&unit::draw_unit);   }   controller()   {      _units.push_back(unit("Bob"));      _units.push_back(unit("Steve"));      _units.push_back(unit("Mike"));   }}; //end classint main() {   controller c;   c.draw_units();   system("pause");}