What is the difference between a concrete class and an abstract class

Question

I'm learning C++, but I'm having trouble distinguishing between abstract and concrete classes.

Some real-world examples might be helpful.

Answer 1

An object cannot be created using an abstract class.

Concrete classes, on the other hand, may be used to build objects.

Concrete implies "being in actuality or in true experience; discernible via the senses; genuine."

In contrast, abstract indicates "not applicable or practical; theoretical."

An abstract class cannot be created.

A concrete one, on the other hand, can.

An abstract class is one that has just one or two pure virtual functions.

A concrete class, on the other hand, contains no pure virtual functions.