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||Programming languages , their environments and system software interfaces
This International Standard specifies requirements for implementations of the C + + programming language. The first such requirement is that they implement the language, and so this International Standard also defines C + +. Other requirements and relaxations of the first requirement appear at various places within this International Standard. 2 C + + is a general purpose programming language based on the C programming language as described in ISO/IEC 9899:1990 Programming languages - C (1.2). In addition to the facilities provided by C, C + + provides additional data types, classes, templates, exceptions, namespaces, inline functions, operator overloading, function name overloading, references, free store management operators, and additional library facilities.