Calling a class's constructor inside another class

Question

I have a test next week for c++ and I\'m preparing myself for it. I\'m confused when I have 2 classes as shown below. I have to walk through the execution of the code, line by l

Answer 1

Current approach works only if you have a default constructor in one class. It is better to initialize members in constructor initialization list:

two(int a, int b, int c, int d) 
    : x(a,b), y(c,d)
{
        cout << "made one two\n";
}