When does implantation occur? If conception occurred, implantation (when the fertilized egg attaches to the uterine wall) typically happens seven to ten days after ovulation, but it can happen a few days earlier or later as well.
Object oriented programming is an attempt to structure imperative code. It makes models of the various concepts in the problem area and applies them. These models (objects) are given functionality (methods) that allow them to perform various actions, and each object can also hold information.
C++ supports object-oriented programming, but OO is not intrinsic to the language. In fact, the main function isn't a member of an object. In smalltalk or Java, you can't tie your shoes (or write Hello, world) without at least one class.