OOPS - UNIT - 4.................//...............Summary.................//......................

Based on the document, here are 5 key bullet points summarizing its content:

Polymorphism is a core OOP feature in C++: The document defines polymorphism as the ability of a message or function to have multiple forms. It is divided into two main types: Compile-time Polymorphism (achieved via function and operator overloading) and Run-time Polymorphism (achieved via function overriding).

Run-time Polymorphism relies on Virtual Functions: This form of polymorphism is achieved when a derived class overrides a function from its base class. By using a base class pointer to a derived class object, the virtual keyword ensures the correct derived class function is called at runtime (late binding).

Abstract Classes and Pure Virtual Functions create interfaces: A class becomes abstract if it contains at least one pure virtual function (declared with = 0). Abstract classes cannot be instantiated and are used to define an interface that derived classes must implement, enforcing a contract for functionality.

Exception Handling manages runtime errors: C++ provides a mechanism to handle runtime anomalies using try, catch, and throw keywords. This allows for the separation of error-handling code from normal program flow, preventing the program from crashing unexpectedly.

Templates enable Generic Programming: Templates allow for the creation of generic functions and classes that can work with any data type. This powerful feature avoids code duplication and increases reusability by defining operations without being tied to a specific type.