Call non-default constructor as member initialization

I have a class "A", and a class "B" such that A contains an instance of B

class A
{
    B b = B(parameters...);
    Other thing = 3;
}

The problem with this code, is that B does not (and should not!) have a copy constructor, so the compiler is complaining

I would like to be able to call B's constructor like below, but it interprets it as a function declaration

class A
{
    B b(parameters...);
    Other thing = 3;
}

Is there a way to call the non-default constructor in the definition of the class?