#include <iostream>


using namespace std;


struct coordinates { int x; int y; };

enum coord { x, y };

void printCoordComp(coordinates cd, coord which)
{
  switch (which)
  {
    case x : cout << cd.x << endl; break;
    case y : cout << cd.y << endl; break;
  }
}

int main() 
{

  coordinates position, pos2;
  coord c;
 
  c = x;
  
  position.x = 10;
  position.y = 7;

  pos2 = position;

  printCoordComp(pos2,c);

  cout << pos2.x << " " << pos2.y << endl;

  return 0;
}