#include <iostream>

using namespace std ;

class C1 {
public:
   int x ;
   int y ;

   C1() : x(17), y(49) {
      cout << "constructor for C1 invoked\n" ;
   }
} ;

class C2 {
public:
   C1 one, two ;
} ;

main() {
   C2 obj ;

   cout << obj.one.x << endl ;

   C1 arr[5] ;

   cout << arr[3].x  << endl ;
}