Type

Objects, references, functions including function template specializations, and expressions have a property called type, which both restricts the operations that are permitted for those entities and provides semantic meaning to the otherwise generic sequences of bits.

[edit] Type classification

The C++ type system consists of the following types:

• fundamental types (see also std::is_fundamental):

• the type void (see also std::is_void);

• arithmetic types (see also std::is_arithmetic):

• integral types (including cv-qualified versions, see also std::is_integral, a synonym for integral type is integer type):

• the type bool;
• character types:

• narrow character types:

• ordinary character types: char, signed char, unsigned char^[1]

• wide character types: char16_t, char32_t, (since C++11)wchar_t;

• signed integer types:

• standard signed integer types: signed char, short, int, long, long long;

• unsigned integer types:

• standard unsigned integer types: unsigned char, unsigned short, unsigned, unsigned long, unsigned long long;

• floating-point types (see also std::is_floating_point):

• standard floating-point types: float, double, long double and their cv-qualified versions;

• compound types (see also std::is_compound):

• reference types (see also std::is_reference):

• lvalue reference types (see also std::is_lvalue_reference):

• lvalue reference to object types;
• lvalue reference to function types;

• pointer types (see also std::is_pointer):

• pointer-to-object types;
• pointer-to-function types;