#include <iostream>

using namespace std;

class X  {
public:
 X() {cout<<"X constructor was called"<<endl;}
 X(int n) {cout<<"X(int) constructor was called"<<endl;}
 ~X(){cout<<"X destructor was called"<<endl;}
};
class A {
 X x;
public:
 A() {cout<<"A constructor was called"<<endl;}
 A(int n) {cout<<"A(int) constructor was called"<<endl;}
 ~A(){cout<<"A destructor was called"<<endl;}
};
int main() { 
  A a1(1);
}


// output:
//X constructor was called
//A(int) constructor was called
//A destructor was called
//X destructor was called

#if 0

//This is correct.  "A a1(1)" is a call to "A::A(int n)".  Before this function enters its body, constructors for any class member variables must be called, ("x" must be constructed [C++ Standard 12.6.2/5]).  This results in a call to "X::X()".  Conversely, in destructors the body of the destructor is executed before class member variables are destroyed (C++ Standard 12.4/6).
#endif