Objects and Classes in C++

Objects

• ‘C’ is a collection of functions but ‘C++’ is a collection of class and object
• Object is an instance of class
• Allocating memory for members of class, is called as instance

  eg : int x float y                                  instance employee emp  

What do you mean by SBI of an object  ?

SBI  -  - > state behavior identity

• SBI stand for state, Behavior and identity since every object has the above the rule

State :  It is a just a value to the attribute of an object at a particular time. Behavior :     It describes the action and their reactions of that object Identity :   An object has an identity that characterizes its own existence      

Class	Object
Data type/ user defined	Instance of class
It is a logical entity	Object is a physical entity
Class does not have state	it having state.