C++ - construction of an object inside a class

Question

I'm fairly new to C++, and I'm not sure about this one. Have a look at the following example which sums up my current problem.

class Foo {     //stuff };  class Bar {     Foo foo; }; 

So Bar constains a full Foo object, not just a reference or pointer. Is this object initialized by its default constructor ? Do I need to explicitly call its constructor, and if so, how and where ?

Thanks.

Answer 1

It will be initialized by its default constructor. If you want to use a different constructor, you might have something like this:

class Foo {     public:      Foo(int val) { }     //stuff };  class Bar {     public:     Bar() : foo(2) { }      Foo foo; };