• C++98
• C++03
• C++11
• C++14
• C++17
• C++20
• C++23

C++98

C++03

C++11 / C++0x

Core language runtime performance enhancements

• Rvalue references and move constructors
• constexpr – Generalized constant expressions
• Modification to the definition of plain old data

Core language build-time performance enhancements

• Extern template

Core language usability enhancements

• Initializer lists
• Uniform initialization
• Type inference
• Range-based for loop
• Lambda functions and expressions
• Alternative function syntax
• Object construction improvement
• Explicit overrides and final
• Null pointer constant
• Strongly typed enumerations
• Right angle bracket
• Explicit conversion operators
• Template aliases
• Unrestricted unions

Core language functionality improvements

• Variadic templates
• New string literals
• User-defined literals
• Multithreading memory model
• Thread-local storage
• Explicitly defaulted special member functions
• Explicitly deleted functions
• Type long long int
• Static assertions
• Allow sizeof to work on members of classes without an explicit object
• Control and query object alignment
• Allow garbage collected implementations
• Attributes

C++ standard library changes

Upgrades to standard library components

• Rvalue references and the associated move support
• Support for the UTF-16 encoding unit, and UTF-32 encoding unit Unicode character types
• Variadic templates (coupled with Rvalue references to allow for perfect forwarding)
• Compile-time constant expressions
• decltype
• explicit conversion operators
• Functions declared defaulted or deleted

Threading facilities

• std::thread
• std::mutex
• std::condition_variable
• std::async
• std::future

Tuple types

Hash tables

Regular expressions

General-purpose smart pointers

Extensible random number facility

Wrapper reference

Polymorphic wrappers for function objects

Type traits for metaprogramming

Uniform method for computing the return type of function objects

C++14 / C++1y

New language features

Function return type deduction

• auto

Alternate type deduction on declaration

• decltype

Relaxed constexpr restrictions

Variable templates

Aggregate member initialization

C++17

C++20

C++23