In real life, we use containers all the time. Your breakfast cereal comes in a box, the pages in your book come inside a cover and binding, and you might store any number of items in containers in your garage. Without containers, it would be extremely inconvenient to work with many of these objects. . . . → Read More: 10.4 — Container classes

In the previous lesson on composition, you learned that compositions are complex classes that contain other subclasses as member variables. In addition, in a composition, the complex object “owns” all of the subobjects it is composed of. When a composition is destroyed, all of the subobjects are destroyed as well. For example, if you . . . → Read More: 10.3 — Aggregation

In real-life, complex objects are often built from smaller, simpler objects. For example, a car is built using a metal frame, an engine, some tires, a transmission, a steering wheel, and a large number of other parts. A personal computer is built from a CPU, a motherboard, some memory, etc… Even you are built . . . → Read More: 10.2 — Composition