Can a method be called from inside a constructor.

Actually, the other three solutions have covered your question pretty good. There are just a few things I like to emphasize.

Be very careful when calling a virtual function from a constructor. Doing so does not call the method of your actual class object, i.e. the most derived version, but the method of the class as far as it has been constructed up to the point in this constructor. Example: You have a class A, and derive B and from B your derive C. And class A declares a virtual function f that is overridden in B and C. If you now create an object of type C and the constructor of B calls f, not C::f but B::f is called, because at the time the constructor of B runs, the object is still in the state of being a B and not a C. That's a bit tricky.

The advice of not making your constructor too complex is a good one. The reason for it is that the only way of signaling an error to the outside world is by throwing an exception. And correct exception handling can sometimes be a real challange. So you are well advised to make your constructor relatively simple and do the things that can go wrong (like opening files, creating windows etc) in a normal member function, which may report the error by return value.

And finally, you cannot call a constructor of a class from another constructor. If you have common code that you want to share between various constructors, then you have to put it into a separate member function (typically called Init).

hi,
yes a method call can be made from within a constructor.
You might do this when you have multiple constructors in a class and you want all of them to call some common member variable initialization method.
Special care must be taken when calling virtual functions from constructor . You might end up with an access-violation exception if the method being called from the constructor is pure virtual.
As a good practice the methods you are calling from the constructor should not be very complex.
For other methods calling a constructor, see the OriginalGriff's answer .

The answer to both of your questions is yes. You can call a method by writing it inside constructor; and you can call a constructor by writing it inside a method but usually we don't call a constructor by writing inside a method instead we simply create a new instance which calls the constructor automatically.