Question

Can we say that the Liskov Substitution Principle is about parent and child objects functioning the same when calling functions using parent type references?

a. Yes
b. No

Answer 1

The Liskov Substitution Principle (LSP) states that child classes should be interchangeable with their parent class without affecting the program's behavior. Objects of the child class must function correctly when used through references of the parent class type, supporting seamless substitution. The answer to the question is 'Yes'.

Step-by-step explanation:

The Liskov Substitution Principle (LSP) is indeed concerned with the ability to substitute objects of a child class for objects of a parent class without affecting the correctness of the program. This means that objects of the child class should behave in such a way that, when they are used via references of the parent class type, they can be used interchangeably without introducing errors or changing the program's behavior.

For example, if you have a function that operates on objects of type Parent, then any object of type Child, which is a subclass of Parent, should be able to be passed into that function and behave correctly, following the rules and contracts established by the Parent class.

Therefore, the answer to the question is a. Yes, the Liskov Substitution Principle is about ensuring that parent and child objects can function the same when calling functions using parent type references.