Type support (basic types, RTTI)
< cpp
See also type system overview and fundamental types defined by the language.
Additional basic types and macros
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Defined in header
<cstddef> |
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| unsigned integer type returned by the sizeof operator (typedef) |
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| signed integer type returned when subtracting two pointers (typedef) |
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(C++11)
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the type of the null pointer literal nullptr (typedef) |
| implementation-defined null pointer constant (macro constant) |
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(C++11)
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trivial type with alignment requirement as great as any other scalar type (typedef) |
| byte offset from the beginning of a standard-layout type to specified member (function macro) |
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(C++17)
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the byte type (enum) |
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Defined in header
<stdbool.h> |
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__bool_true_false_are_defined
(C++11)(deprecated)
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C compatibility macro constant, expands to integer literal 1 (macro constant) |
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Defined in header
<stdalign.h> |
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__alignas_is_defined
(C++11)(deprecated)
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C compatibility macro constant, expands to integer literal 1 (macro constant) |
Fixed width integer types (since C++11)
Fixed width floating-point types (since C++23)
Numeric limits
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Defined in header
<limits> |
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| provides an interface to query properties of all fundamental numeric types. (class template) |
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C numeric limits interface
Runtime type identification
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Defined in header
<typeinfo> |
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| contains some type's information, generated by the implementation. This is the class returned by the typeid operator. (class) |
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| exception that is thrown if an argument in a typeid expression is null (class) |
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| exception that is thrown by an invalid dynamic_cast expression, i.e. a cast of reference type fails (class) |
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Defined in header
<typeindex> |
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(C++11)
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wrapper around a type_info object, that can be used as index in associative and unordered associative containers(class) |