I may not explain it well, so here is a peace of introduction from Wikipedia.
From Wikipedia, the free encyclopedia
C++ (pronounced as cee plus plus, /ˈsiː/ /plʌs/ /plʌs/) is a general-purpose programming language. It has imperative, object-oriented and generic programming features, while also providing the facilities for low-level memory manipulation.
It is designed with a bias toward system programming (e.g., for use in embedded systems or operating system kernels), with performance, efficiency and flexibility of use as its design requirements. C++ has also been found useful in many other contexts, including desktop applications, servers (e.g. e-commerce, web search or SQL servers), performance-critical applications (e.g. telephone switches or space probes), and entertainment software.[3] C++ is a compiled language, with implementations of it available on many platforms and provided by various organizations, including the FSF, LLVM, Microsoft and Intel.
C++ is standardized by the International Organization for Standardization (ISO), with the latest (and current) standard version ratified and published by ISO in September 2011 asISO/IEC 14882:2011 (informally known as C++11).[4] The C++ programming language was initially standardised in 1998 as ISO/IEC 14882:1998, which was then amended by the C++03, ISO/IEC 14882:2003, standard. The current C++11 standard supersedes these, with new features and an enlarged standard library. Before the initial standardization in 1998, C++ was developed by Bjarne Stroustrup at Bell Labs, starting in 1979, who wanted an efficient flexible language (like the C language), which also provided high-level features for program organization.





