Can you hide a class from another class?

I have not used friend concept in C#. Actually it may not exist in C#. Based on OO principles, the friend feature in C++ violates the privacy or encaptualization of private data memeber. Would you...

By using Inheritance If i want to derive the features of Class A into B then i will do Class a extends B {}

- Stellar - Elite - Global Leaders - Global Elite - Best of Breed - Unmatched - Without Equal - First-class - Five Star - Five Diamond - Preeminent - Peerless - Unequaled - Unrivaled - Distinguished...

elite, first-class, champion,etc.first-rate, top of the line, top-caliber, high-grade.

Luxury, Upper Class.