C++98 is the first standardized version of C++. As it was developed as an extension to C, many of the features which set apart C++ from C are added.

Language Extensions (in respect to C89/C90)

• Classes, Derived classes, virtual member functions, const member functions
• Function overloading, Operator overloading
• Single line comments (Has been introduced in the C-languague with C99 standard)
• References
• new and delete
• boolean type (Has been introduced in the C-languague with C99 standard)
• templates
• namespaces
• exceptions
• specific casts

Library Extensions

• The Standard Template Library