C++ (pronounced see plus plus) was developed by Bjarne Stroustrup at Bell Labs as an extension to C, starting in 1979. C++ adds many new features to the C language, and is perhaps best thought of as a superset of C, though this is not strictly true (as C99 introduced a few features that do not exist in C++). C++'s claim to fame results primarily from the fact that it is an object-oriented language.
C++ was ratified in 1998 by the ISO committee, and again in 2003 (called C++03). Three major updates to the C++ language (C++11, C++14, and C++17, ratified in 2011, 2014, and 2017 accordingly) have been made since then, adding additional functionality to the language. C++11 in particular added a huge number of new capabilities to the language. Future updates to the language are in active consideration.