C++ (pronounced “see plus plus”) is a general-purpose intermediate-level computer programming language. It is a statically typed free-form multi-paradigm language supporting procedural programming, data abstraction, object-oriented programming, and generic programming. Strictly speaking, C++ is not a superset of C, but for all practical purposes one can consider it thus.
During the 1990s, C++ became one of the most popular commercial programming languages, and it is still widely used today. Recently, however, more modern high-level scripting languages such as Python and Ruby are enjoying increasing popularity.
Features introduced in C++ include declarations as statements, function-like casts, new/delete
, bool
, reference types, const
, inline
functions, default arguments, function overloading, namespaces, classes (including all class-related features such as inheritance, member functions, virtual functions, abstract classes, and constructors), operator overloading, templates, the ::
operator, exception handling, and run-time type identification.
C++ also performs more type checking than C in several cases.
Comments starting with two slashes (“//”) were originally part of C’s predecessor, BCPL, and were reintroduced in C++.
Several features of C++ were later adopted by C, including const
, inline
, declarations in for
loops, and C++-style comments (using the //
symbol). However, C99 also introduced features that do not exist in C++, such as variadic macros and better handling of arrays as parameters.
In The Design and Evolution of C++ ISBN 0-201-54330-3, Bjarne Stroustrup describes some rules that he uses for the design of C++. Knowing the rules helps to understand why C++ is the way it is. The following is a summary of the rules. Much more detail can be found in The Design and Evolution of C++.
Please refer to the indepth book on C++ Internals by Stanley B. Lippman (he worked on implementing/maintaining C-front the original C++ implementation at Bell Labs). “Inside the C++ Object Model” documents how the C++ compiler converts your program statements into an in-memory layout.
C++ is a great language to write a rogue-like with. It has all the freedom of C, with some additional language features which can make a programmer’s life easier (such as templates and classes).