nullptr pointer literal

From Cppreference

C++ Standard Library
Language Utilities library Strings library Containers library Algorithms library Iterators library Numerics library Input/output library Localizations library Regular expressions library (C++11) Atomic operations library (C++11) Thread support library (C++11)
C++ language
General topics Preprocessor Comments Keywords ASCII chart Escape sequences History of C++ Flow control Conditional execution statements if statement switch statement Iteration statements for loop range-for loop (C++11) while loop do-while loop Jump statements continue statement break statement goto statement return statement Functions function declaration lambda function declaration function template inline specifier exception specifications (deprecated) noexcept specifier (C++11) Exceptions throw expression try-catch block Namespaces namespace declaration namespace aliases Types fundamental types compound types enumeration types union types function types decltype specifier (C++11) Specifiers cv specifiers storage duration specifiers constexpr specifier (C++11) auto specifier (C++11) alignas specifier (C++11) Literals integer literals character literals floating-point literals string literals boolean literals nullptr (C++11) user-defined (C++11) Expressions value categories order of evaluation operators operator precedence alternative representations Utilities Types typedef declaration type alias declaration (C++11) attributes (C++11) Casts implicit conversions const_cast conversion static_cast conversion dynamic_cast conversion reinterpret_cast conversion Memory allocation new expression delete expression Classes class declaration this pointer access specifiers friend specifier initializer lists Class-specific function properties virtual function override specifier (C++11) final specifier (C++11) explicit (C++11) static Special member functions default constructor copy constructor move constructor (C++11) assignment operator move operator (C++11) destructor Templates class template function template template specialization parameter packs (C++11) Miscellaneous Inline assembly

Contents 1 Syntax 2 Explanation 3 Keywords 4 See also

[edit] Syntax

nullptr		(since C++11)

[edit] Explanation

The keyword nullptr denotes the null pointer literal. It is an unspecified prvalue of type std::nullptr_t. There exist implicit conversions from nullptr to null pointer value of any pointer type and any pointer to member type. Similar conversions exist for any value of type std::nullptr_t as well as for the macro NULL, the null pointer constant.

[edit] Keywords

nullptr

[edit] See also

NULL	implementation-defined null pointer constant (macro constant)
nullptr_t (C++11)	the type of the null pointer literal nullptr (typedef)