Initialization of an object of class/struct

Question

When trying initialize an object for MyClass, I saw these two methods are used:

MyClass a;
MyClass a{};

Both cases seem to work fine, but I am wondering is there a better practice that one should use which in certain scenarios?

Answer 1

There is a subtle different between MyClass a; and MyClass a{}; . If Myclass is a fundamental type or an aggregate then

MyClass a;

will leave a 's sate/members uninitialized while

MyClass a{};

will value initialize a 's state/members.

If Myclass is neither of the above then they will have the same behavior.