What does a constructor return?

Question

My question is what does a constructor return? This question is not quite different from \"What is the return type of a constructor?\" I have read somewhere that a construct

Answer 1

A constructor doesn't return anything. A constructor is called to initialize an object. A constructor can only be used to initialize an object; you can't actually call a constructor explicitly (for one thing, constructors do not have names).

In the example you give, empty() is not a function call expression, it is value initialization. It creates a value-initialized temporary object of type empty.