Why we use compositions in c++?

Question

Here we uses classes constructors methods. we can use this directly without saying or showing it like a composition.

Answer 1

Object Composition is useful in a C++ context because it allows us to create complex classes by combining simpler, more easily manageable parts. This reduces complexity, and allows us to write code faster and with less errors because we can reuse code that has already been written, tested, and verified as working.