Bizarre issue when populating a list with objects in C++?

Question

I have created a class Patient and I want to populate a list of Patients with objects which I have created via the explicit constrctor. However I get a

Answer 1

The list's initializer takes a sequence of expressions, but you've given it full variable declarations instead. That's simply not valid syntax. You can only put declarations in "free space" in a function or at namespace scope, not inside another statement (we'll ignore the joys of conditionals for the purpose of this answer).

You probably intended to create some temporaries instead:

list<Patient> sp = {
   Patient("I.Petrov", "21.12.02", 4),
   Patient("D.Stoyanov", "12.02.97", 7),
   Patient("K.Dimitrov", "07.08.90", 1)
};

But I'd write it as:

std::list<Patient> sp{
   {"I.Petrov",   "21.12.02", 4},
   {"D.Stoyanov", "12.02.97", 7},
   {"K.Dimitrov", "07.08.90", 1}
};