C++ is a versatile language for handling vary large programs. It is suitable for virtually any programming task including development of editors, compilers, databases, communication systems and any complex real-life application systems.
Since C++ allows us to create hierarchy-related objects, we can build special object-oriented libraries which can be used later by many programmers.
While C++ is able to map the real-world problem properly, the C part of C++ gives the language the ability to get close to the machine-level details.
C++ programs are easily maintainable and expandable. When a new feature needs to be implemented, it is very easy to add to the existing structure of a object.
It is expected that C++ will replace C as a general-purpose language in the near future.