Are members of a class with defaulted constructors zero-initialized? [duplicate]

If I have a class:

class MyClass { public: int value; }; 

It's member value won't be zero-initialized if I don't zero-initialize the class:

MyClass c; std::cout << c.value; // UB: value not initialized. 

Does defaulting the default constructor guarantee that members are zero-initialized?

class MyClass { public: int value; MyClass() = default; }; 

If I explicitly default the default constructor, will value be initialized to zero now?

MyClass c; std::cout << c.value; // Guaranteed to print zero? 

Note: This question is not a duplicate because I'm asking about the case where the default constructor is explicitly defaulted, and the other question just covers the case where it's not provided.