Clients of a class find it much more convenient and intuitive to use standard operators to perform operations on objects of the class. Use the header file as an example of how operator overloading can ease the task of programming. This is another form of encapsulation: the client is aware that the operators work as expected but is unaware of the implementation details.

Describe the purpose of the pointer this in object$-$oriented programming.

Reflect on examples of where using pointers in object$-$oriented programming is necessary. Can you please also give specific real$-$life world applications?