Will default constructor still be created if I explicitly define a constructor with arguments but no default constructor?
No, you have to explicitly provide the default constructor in that case.
Although you can (from C++11 onwards), for a class
Foo, use the syntax
Foo() = default;
within the class declaration which reintroduces the compiler-generated default constructor. (Note you need to put this in the
public section for exact equivalence).
Alternatively, if you provide default arguments to all the constructor parameters, then it becomes the default constructor.