A source file has source code, what a human understands. It isn't compiled or linked.
An object file has compiled, but not linked intermediary code.
An executable file has compiled and linked code which is executable.
Answer:
a. Object cannot be converted to Person
Explanation:
This program demonstrates polymorphism.
e.g., a Student IS a Person therefore you can call m() with a Student as well as a Person object.
The same goes for GraduateStudent.
However, and Object is not a Person, so the last call fails. This can be deducted by the type checking that happens at compile time.
The correct answer is C. Typeover mode
This is when you select a text and can then type over it and it automatically replaces it with what you're writing. It also creates a little box that lets you edit the selected part easily if that's what you need with things like bold or italic or change the text color.
