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Data types supported by the C programming language
variables. Data types also determine the types of operations or methods of processing of data elements. The C language provides basic arithmetic types, such
C_data_types
Attribute of data
derived data types are specified, and partly defined, in terms of other data types. All basic types are atomic. For example, integers are a basic type defined
Data_type
Relational database programming language
three kinds of data types (chapter 4.1.1 of SQL/Foundation): predefined data types constructed types user-defined types. Constructed types are one of ARRAY
SQL
Data type defined by combining other types
programming and type theory, an algebraic data type (ADT) is a composite data type, i.e. a type formed by combining other types. An algebraic data type is defined
Algebraic_data_type
Extremely basic data type
(built-in types). Data types which are not primitive are referred to as derived or composite. Primitive types are almost always value types, but composite
Primitive_data_type
Data having only values "true" or "false"
or !=0 for arithmetic types, and null or !=null for pointers or references. Objective-C also has a separate Boolean data type BOOL, with possible values
Boolean_data_type
Mathematical model for data types
abstract data type (ADT) is a mathematical model for data types, defined by its behavior (semantics) from the point of view of a user of the data, specifically
Abstract_data_type
Programming language construct
composite data type or compound data type is a data type that consists of programming language scalar data types and other composite types that may be
Composite_data_type
In computing, a data type whose structure is not defined in an interface
called transparent. Opaque data types are frequently used to implement abstract data types. Typical examples of opaque data types include handles for resources
Opaque_data_type
Data type that represents an ordered collection of elements (values or variables)
array types may overlap (or be identified with) other data types that describe aggregates of values, such as lists and strings. Array types are often
Array_(data_type)
Particular way of storing and organizing data in a computer
in sequential data processing scenarios. There are numerous types of data structures, generally built upon simpler primitive data types. Well known examples
Data_structure
Form of text that defines C code
Since C23, C can use auto to declare a type-inferred variable. Types can be qualified to indicate special properties of their data. The type qualifier
C_syntax
Computer science concept
be assigned types. Type systems formalize and enforce the otherwise implicit categories the programmer uses for algebraic data types, data structures,
Type_system
Data type for storing floating-point numbers in base-10
numeric types - C# reference". 29 September 2022. "Decimal — Decimal fixed point and floating point arithmetic — Python 3.10.0 documentation". "Data management"
Decimal_data_type
imaginary part. The FORTRAN COMPLEX type. The C99 standard of the C programming language includes complex data types and complex-math functions in the standard
Complex_data_type
General-purpose programming language
multiple data types to share the same memory location, and enumeration types support aliasing integer values. C lacks a dedicated string type but provides
C_(programming_language)
Data type that allows for values that are one of multiple different data types
a data structure. Some programming languages support a union type for such a data type. In other words, a union type specifies the permitted types that
Union_type
Type of data structure
(also called convergent replicated data types, or CvRDTs) are defined by two types, a type for local states and a type for actions on the state, together
Conflict-free replicated data type
Conflict-free_replicated_data_type
24-pin USB connector system
supersedes Mini DisplayPort and Lightning connectors. USB-C is used for multiple purposes: exchanging data with peripheral devices, such as external drives, mobile
USB-C
Software class or data structure whose instances are collections of other objects
weakly typed languages; these usually imply inheritance and polymorphism shared by types. Union types (C/C++ language) Permits storing types of different
Container (abstract data type)
Container_(abstract_data_type)
Topics referred to by the same term
C-type may refer to: Type C (disambiguation), q.v. C data types This disambiguation page lists articles associated with the title C-type. If an internal
C-type
Datum of integral data type
integer is a datum of integral data type, a data type that represents some range of mathematical integers. Integral data types may be of different sizes and
Integer_(computer_science)
Opaque data type which stores a memory address
special case of an opaque data type, a data type declared to be a pointer to a record or data structure of some unspecified type. Opaque pointers are present
Opaque_pointer
types provided by most languages for algebraic computation, such as Mathematica and Maple. Many languages that do not have a built-in rational type still
Rational_data_type
Abstract data type for storing distinct values
collection types, rather than retrieving a specific element from a set, one typically tests a value for membership in a set. Some set data structures
Set_(abstract_data_type)
Extent to which a programming language discourages type errors
other enumeration types. C++ explicit constructors and C++11 explicit conversion operators prevent implicit type conversions. C# is type-safe. It has support
Type_safety
Type information inspection taking place at runtime
information about an object's data type at runtime. Run-time type information may be available for all types or only to types that explicitly have it (as
Run-time_type_information
Changing an expression from one data type to another
another data type. In general, both primitive and compound data types can be converted. Each programming language has its own rules on how types can be
Type_conversion
Software development toolkit
serialization of C/C++ data directly in XML and later also in SOAP. The project succeeded at defining type-safe data bindings between XML Schema types and a wide
GSOAP
Type qualifier denoting the data as being read-only
pointers and references – not basic value types like integers – but also for composite data types or templated types such as containers. It is concealed by
Const_(computer_programming)
C keyword for defining a structured data type
identifier, often a pointer. A struct can contain other data types, so it is used for mixed-data-type records. For example, a bank customer struct might contain
Struct (C programming language)
Struct_(C_programming_language)
Linked node hierarchical data structure
In computer science, a tree is a widely used abstract data type that represents a hierarchical tree structure with a set of connected nodes. Each node
Tree_(abstract_data_type)
Keyword in programming languages
programming languages C, C++, and Objective-C. It is used to create an additional name (alias) for another data type, but does not create a new type, except in the
Typedef
Data type in computer science
provided as primitive data types in a language, such as lists, while more complex collection types are implemented as composite data types in libraries, sometimes
Collection (abstract data type)
Collection_(abstract_data_type)
Style of computer programming
algorithms are written in terms of data types to-be-specified-later that are then instantiated when needed for specific types provided as parameters. This approach
Generic_programming
Abstract data type
In computer science, a stack is an abstract data type that serves as a collection of elements with two main operations: Push, which adds an element to
Stack_(abstract_data_type)
Classes of data types
programming languages, data types are classified as either value types or reference types, where values referenced by reference type variables are always
Value_type_and_reference_type
Technique circumventing programming language data typing
type system, but can be done nonetheless, using pointers or struct unions. C# only allows pointers to so-called native types, i.e. any primitive type
Type_punning
Type of data structure
A class in C++ is a user-defined type or data structure declared with any of the keywords class, struct or union (the first two are collectively referred
C++_classes
Degree of interdependence between software modules
connascence of name, type, position, and meaning. Certain coupling types naturally align with specific connascence types; for example, data coupling often involves
Coupling (computer programming)
Coupling_(computer_programming)
General-purpose programming language
every type inherits a ToString() method. CTS separates data types into two categories: Reference types Value types Instances of value types neither
C Sharp (programming language)
C_Sharp_(programming_language)
Cloud-based data storage and analytics service
written in C#. U-SQL uses C# data types and the C# expression language. In 2021, Microsoft announced the 2024 retirement of the original Azure Data Lake Storage
Azure_Data_Lake
Human-readable data serialization language
JSON, including comments, extensible data types, relational anchors, strings without quotation marks, and mapping types preserving key order. Due to the conciseness
YAML
Using one interface or symbol with regards to multiple different types
specified types. Parametric polymorphism: does not specify concrete types and instead uses abstract symbols that can substitute for any type. Subtyping
Polymorphism (computer science)
Polymorphism_(computer_science)
Storage size operator in C and C++
is a unary operator in the C and C++ programming languages that evaluates to the storage size of an expression or a data type, measured in units sized as
Sizeof
Union data structure with enforced cases
types. Only one of the types can be in use at any one time, and a tag field explicitly indicates which type is in use. It can be thought of as a type
Tagged_union
Return type for functions that do not output values when called
The void type, in several programming languages, more so curly bracket programming languages derived from C and ALGOL 68, is the return type of a function
Void_type
Computer science data structure
heap is a tree-based data structure that satisfies the heap property: In a max heap, for any given node C, if P is the parent node of C, then the key (the
Heap_(data_structure)
Composite data type
user-defined type (UDT), or compound data type) is a composite data structure – a collection of fields, possibly of different data types, typically fixed
Record_(computer_science)
Computer data interchange format
scalar types. BSON originated in 2009 at MongoDB. Several scalar data types are of specific interest to MongoDB and the format is used both as a data storage
BSON
Abstract data type in computer science
data type that is meant to implement the undirected graph and directed graph concepts from the field of graph theory within mathematics. A graph data
Graph_(abstract_data_type)
Floating-point data type in C family languages
In C and related programming languages, long double refers to a floating-point data type that is often more precise than double precision though the language
Long_double
World War II Japanese submarine class
to serve during the Second World War. Type-C submarines were better armed than the Type-A and Type-B. The Type-Cs were also used as Kō-hyōteki or Kaiten
Type_C_submarine
Named set of data type values
types in C/C++ Archived 2008-04-03 at the Wayback Machine Enumerated types in C# Enumerated types in Java Enumerated types in MySQL Enumerated types in
Enumerated_type
Programming language
compile-time code generation, algebraic data types, and a foreign function interface (FFI) for interfacing with C, C++, Objective-C, and JavaScript. It also supports
Nim_(programming_language)
Abstract data type
In computer science, a queue is an abstract data type that serves as an ordered collection of entities. By convention, the end of the queue where elements
Queue_(abstract_data_type)
Relationship between programs and proofs
calculus, higher-order logic and Girard's System Fω inductive types as algebraic data type necessity ◻ {\displaystyle \Box } in modal logic and staged computation
Curry–Howard_correspondence
strongly typed identifier data types and database columns. Passing a strongly typed identifier throughout the layers of an example application. C# have records
Strongly_typed_identifier
General-purpose programming language
new data types that are explicitly defined, unlike C’s more generic int and float, a small number of directives are used to move data between the C and
Zig_(programming_language)
Lightweight dynamic tracing environment
C, it supports all C data types as well as C data structures. Vue also supports a String, list, and time stamp data types. The String and list types are
ProbeVue
Another term for record
“plain old data” (POD) and by that is_pod is deprecated and replaced with the concept of “trivial” and “standard-layout” types. In some contexts, C++ allows
Passive_data_structure
C language standard library specifically for POSIX systems
The C POSIX library is a specification of a C standard library for POSIX systems. It was developed at the same time as the ANSI C standard. Some effort
C_POSIX_library
Programming language
defining complex data types and building dynamic and recursive data structures such as lists, trees and graphs. Pascal has strong typing on all objects
Pascal_(programming_language)
Programming language concept
function type constructor is contravariant in the parameter type. Here, the subtyping relation of the simple types is reversed for the complex types. A programming
Type_variance
An abstract graphical data type (AGDT) is an extension of an abstract data type for computer graphics. AGDTs provide the advantages of the ADTs with facilities
Abstract_graphical_data_type
Object which stores memory addresses in a computer program
the data type it is declared to point to. An untyped pointer is also provided under the name Pointer, which is compatible with other pointer types. Pointers
Pointer (computer programming)
Pointer_(computer_programming)
Facility used to house computer servers
"What Is a Data Center? | IBM". www.ibm.com. Retrieved July 3, 2026.{{cite web}}: CS1 maint: multiple names: authors list (link) "Types of Data Centers |
Data_center
Result of multiplying types in type theory
primitive data types. The expression of an instance of a product type will be a tuple, and is called a "tuple type" of expression. A product of types is a
Product_type
Way in which data is arranged and accessed in computer memory
will be 8-byte aligned. Some data types are dependent on the implementation. Here is a structure with members of various types, totaling 8 bytes before compilation:
Data_structure_alignment
C++ alternative syntax for return types
code. The data type of that value is called the function's return type. In the C++ programming language, a function must be declared. The C++ function's
Trailing_return_type
Set of file formats
and C++ to handle "packet" data, accessed at high-speeds HDF5 Dimension Scale (H5DS) – allows dimension scales to be added to HDF5 Java Common Data Format
Hierarchical_Data_Format
Rules defining correctly structured Java programs
Primitive types in Java include integer types, floating-point numbers, UTF-16 code units and a Boolean type. Unlike C++ and C#, there are no unsigned types in
Java_syntax
64-bit computer number format
floating-point data types was Fortran.[citation needed] Before the widespread adoption of IEEE 754-1985, the representation and properties of floating-point data types
Double-precision floating-point format
Double-precision_floating-point_format
their pavement material types. For instance, the Long-Term Pavement Performance database includes more than 30 types of pavement types for roads in the US
Types_of_road
Variant is a data type in certain programming languages, particularly Visual Basic, OCaml, Delphi and C++ when using the Component Object Model. It is
Variant_type_(COM)
Creating a model of the data in a system
different types of data models produced while progressing from requirements to the actual database to be used for the information system. The data requirements
Data_modeling
Organized collection of data in computing
In computing, a database is an organized collection of data or a type of data store based on the use of a database management system (DBMS), the software
Database
Anonymous types are a feature of C# 3.0, Visual Basic .NET 9.0, Oxygene, Scala and Go that allows data types to encapsulate a set of properties into a
Anonymous_type
C++ extensions for simulating embedded systems
during initialization. SystemC introduces several data types which support the modeling of hardware. Extended standard types: sc_int<n> n-bit signed integer
SystemC
generalized to other types of values, such as strings and aggregated data types. Comparison sorts use swaps to change the positions of data. In many programming
Swap_(computer_programming)
Concept in computer science
contrast to data type constructors, which define injective functions from all types of a particular kind to a new set of types, and type synonyms (a.k
Type_family
Visual representation of data
types require different methods of visualization. Two primary types of information displays are tables and graphs. A table contains quantitative data
Data and information visualization
Data_and_information_visualization
Misuse of data analysis
Data dredging, also known as data snooping or p-hacking, is the misuse of data analysis to find patterns in data that can be presented as statistically
Data_dredging
Generic type features in C++
Templates are a feature of the C++ programming language that allow functions and classes to operate with generic types. This allows a function or class
Template_(C++)
32-bit computer number format
floating-point data types was Fortran. Before the widespread adoption of IEEE 754-1985, the representation and properties of floating-point data types depended
Single-precision floating-point format
Single-precision_floating-point_format
2011 edition of the C++ programming language standard
be considered a plain old data (POD) type. Types that fit this definition produce object layouts that are compatible with C, and they could also be initialized
C++11
Type system in computer science
implementations of a method depending on the types of multiple arguments, and indeed return types. Multi-parameter type classes do not require searching for the
Type_class
Software library
The Library of Efficient Data Types and Algorithms (LEDA) is a free software library providing C++ implementations of a broad variety of algorithms for
Library of Efficient Data types and Algorithms
Library_of_Efficient_Data_types_and_Algorithms
ancestor with reference types. The Java reference types all derive from a common root type. C# has a unified type system in which all types (besides unsafe pointers)
Comparison of C Sharp and Java
Comparison_of_C_Sharp_and_Java
Technical standard in computing
high-speed data link. USB4 defines signaling rates of 20 Gbit/s, 40 Gbit/s and 80 Gbit/s. USB4 is only defined for USB-C connectors, and its Type-C specification
USB4
Communication connector using the USB protocol
pairs of wires for one differential signal of serial data per direction), and in 2014, the USB-C specification added a second full-duplex lane. USB has
USB_hardware
Stored data in computer systems
structure to this storage. There are different types of data storage devices used for copying backups of data that is already in secondary storage onto archive
Backup
Standardized language for real-time and embedded systems
Language replacing the data language with C. Latest version of SDL standard (SDL'2010) now includes the support of C data types and syntax making SDL-RT
Specification and Description Language
Specification_and_Description_Language
General-purpose programming language
differently in C++. For example, C allows implicit conversion from void* to other pointer types but C++ does not (for type safety reasons). Also, C++ defines
C++
a data type, and K for a class or enumeration type. Some operators have alternative spellings using digraphs and trigraphs or operator synonyms. C and
Operators_in_C_and_C++
Set of rules defining correctly structured programs for the C# programming language
naming conventions for identifiers in C#, recommending the use of PascalCase for the names of types and most type members, and camelCase for variables
C_Sharp_syntax
High-level programming language first released in 1980
modulo types, aggregate types (records and arrays), and enumeration types. Access types define a reference to an instance of a specified type; untyped
Ada_(programming_language)
Encapsulation of an optional value in programming or type theory
is called nullable types (often expressed as A?). The core difference between option types and nullable types is that option types support nesting (e
Option_type
Procedural programming language
of the language supporting new internal and user-defined types, which became the ubiquitous C programming language. BCPL semantics with a lot of SMALGOL
B_(programming_language)
(Parameterization) that allow for the precise specification of open types where the types of values can be identified by integers, by OIDs, etc. OIDs are
Comparison of data-serialization formats
Comparison_of_data-serialization_formats
C DATA-TYPES
C DATA-TYPES
Female
Hebrew
(×“Ö¼Ö¸× Ö¸×”) Feminine form of Hebrew Dan, DANA means "judge." Compare with other forms of Dana.
Male
Turkish
Turkish name ATA means "ancestor."
Male
Hungarian
Czech and Hungarian form of Latin Ignatius, possibly IGNÃC means "unknowing."
Female
Polish
 Variant spelling of Polish Dyta, DITA means "rich battle." Compare with another form of Dita.
Female
Finnish
 Short form of Finnish Katariina, KATA means "pure." Compare with other forms of Kata.
Male
Hebrew
Variant spelling of Hebrew Dathan, DATAN means "belonging to a fountain."
Female
English
 English surname transferred to unisex forename use, possibly DANA means "from Denmark." Compare with other forms of Dana.
Female
English
 Middle English name DARA means "brave, daring." Compare with another form of Dara.
Male
Irish
Old Irish name MAEDÓC means "my dear Ãedh."
Male
Vietnamese
Vietnamese name ̇ȬC means "desire."
Female
Hindi/Indian
(लता) Hindi name derived from a plant name, from the Sanskrit word lata, LATA means "creeper," in reference to a creeping plant.
Female
Hebrew
(דִּיתָה) Pet form of Hebrew Yehuwdiyth, DITA means "Jewess" or "praised." Compare with another form of Dita.
Female
Slavic
 Short form of Slavic Bogdana, DANA means "gift from God." Compare with other forms of Dana.
Male
Irish
Old Irish Gaelic name MAEL-MAEDÓC means "devotee of Maedóc."
Female
Hungarian
 Short form of Hungarian Katalin, KATA means "pure." Compare with other forms of Kata.
Male
Irish
 From Irish Gaelic Mac Dara, DARA means "son of oak." Compare with other forms of Dara.
Male
Iranian/Persian
 Short form of Persian Dârayavahush, DARA means "possesses a lot, wealthy." Compare with other forms of Dara.
Female
Polish
Short form of Polish Edyta, DYTA means "rich battle."
Female
Finnish
Variant form of Finnish Aada, AATA means "noble."
Female
Russian
 Short form of Russian Yekaterina, KATA means "pure." Compare with other forms of Kata.
C DATA-TYPES
C DATA-TYPES
Boy/Male
Indian
God of Gods
Boy/Male
Hindu
Hardworking, Entrepreneur
Boy/Male
Hindu, Indian
Brave; A Great Warrior
Boy/Male
Tamil
Lord of the blessed
Female
English
Variant spelling of English Katie, KATEY means "pure."
Female
Greek
(Ἰοκάστη) Greek name, possibly IOKASTE means "violet tinted (clouds)." In mythology, this is the name of the mother and wife of Oidipous. Jocasta is the Latin form.
Girl/Female
French
From Gaul.
Boy/Male
Indian, Sanskrit
Enemy of Daityas; Lord Krishna
Girl/Female
Muslim
Song, Poet
Boy/Male
Gaelic
Horse lord.
C DATA-TYPES
C DATA-TYPES
C DATA-TYPES
C DATA-TYPES
C DATA-TYPES
n.
See Jack, 8 (c).
p. pr. & vb. n.
of Date
n.
That addition to a writing, inscription, coin, etc., which specifies the time (as day, month, and year) when the writing or inscription was given, or executed, or made; as, the date of a letter, of a will, of a deed, of a coin. etc.
n.
The point of time at which a transaction or event takes place, or is appointed to take place; a given point of time; epoch; as, the date of a battle.
imp. & p. p.
of Date
n.
The fruit of the date palm; also, the date palm itself.
n. pl.
See Datum.
pl.
of Datum
superl.
Raised a semitone in pitch; as, C sharp (C/), which is a half step, or semitone, higher than C.
v. t.
To note or fix the time of, as of an event; to give the date of; as, to date the building of the pyramids.
n.
Prior date; a date antecedent to another which is the actual date.
v. t.
To note the time of writing or executing; to express in an instrument the time of its execution; as, to date a letter, a bond, a deed, or a charter.
n.
Other species of Cabus, as C. fatuellus (the brown or horned capucine.), C. albifrons (the cararara), and C. apella.
a.
Major; in the major mode; as, C dur, that is, C major.