Polymorphism❓

Polymorphism is the ability for a message or data to be processed in more than one form.

Example:- If you give input 5+7, it results into 12, the sum of 5 and 7. And if you give 'A' + 'BC', it results into 'ABC', the concatenated strings. The same operation symbol '+' is able to distinguish between the two operations (summation and concatenation) depending upon the data type it is working on.

Types of Polymorphism:-

• Compile time Polymorphism (achieved by Function Overloading or Operator Overloading).

• Runtime Polymorphism (achieved by Function Overriding).

• Binding is the process through which a specific instance of a function call (method invocation) is bound (related) to the appropriate member function of an appropriate class. This may happen at compile time (static binding) or run time (dynamic binding).

Problem statement

• An organization needs to develop a salary processing application for its staff.
• At present it has an engineering division where only Engineers and Managers work. Every Engineer reports to some Manager. Every Manager can also work like an Engineer.
• The logic for processing salary for Engineers and Managers are different as they have different salary heads.
• In future, it may add Directors to the team. Then every Manager will report to some Director. Every Director could also work like a Manager.
• The logic for processing salary for Directors will also be distinct.
• Further, in future it may open other divisions, like Sales division, and expand the workforce.
• Make a suitable extensible design.