what is friend function, what is function overloading and overriding. difference between run time polymorphism and compile time polymorphism.

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Friend function is a function that is not a member of a class but has access to its private and protected members. Function overloading is defining multiple functions with the same name but different parameters. Function overriding is redefining a base class function in a derived class. Runtime polymorphism is achieved through virtual functions and late binding, while compile time polymorphism is achieved through function overloading and templates.

Friend function can access private and protected members of a class.
Function overloading allows multiple functions with the same name but different parameters.
Function overriding is redefining a base class function in a derived class.
Runtime polymorphism is achieved through virtual functions and late binding.
Compile time polymorphism is achieved through function overloading and templates.

what is friend function, what is function overloading and overriding. difference between run time polymorphism and compile time polymorphism.

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