What’s a default constructor? How are an object’s data members ini- tialized if a class has only a default constructor defined by the compiler?

What will be an ideal response?

A default constructor is the constructor that is called when you create an object with- out specifying any arguments to a constructor. You can write a default constructor
that initializes data members any way you choose. The compiler provides a default constructor with no parameters in any class that does not explicitly include a con structor. The default constructor provided by the compiler creates an object without assigning any initial values to the object’s fundamental type data members—data members must be initialized using the object’s member functions. Every constructor implicitly calls the constructors of any data member objects before the body of the class’s constructor executes.