C++ is general-purpose object-oriented programming (OOP) language developed by Bjarne Stroustrup.
Originally, C++ was called “C with classes,” as it had all the properties of the C language with the addition of user-defined data types called “classes.” It was renamed C++ in 1983.
C++ is much compatible with C that it will probably compile over 99% of C programs without changing a line of source code. Though, C++ is a lot well-structured and safer language than C as it OOPs based.
C++ is considered an intermediate-level language, as it includes both high and low-level language features.