This lecture introduces the concept of inheritance in object-oriented programming using C++. Inheritance allows the creation of specialized classes, called subclasses, from existing more general classes, called superclasses. It explains how subclasses inherit attributes and methods from superclasses, how additional attributes and methods can be defined in subclasses, and how inherited methods can be redefined. The lecture also covers the importance of organizing code, reducing redundancy, and the transitivity of inheritance. Examples of creating subclasses and practical implementation in C++ are provided.