Enum c standard的問題,透過圖書和論文來找解法和答案更準確安心。 我們找到下列懶人包和總整理
另外網站How Big Is An Enum? - Embedded.fm也說明:The C standard specifies that enums are integers, but it does not specify the size. Once again, that is up to the people who write the compiler.
國立中正大學 成人及繼續教育研究所 陳毓璟所指導 林美慧的 智能障礙類特殊教育學校高職部教師職業教育之行政支援知覺與教學困擾之相關研究 (2013),提出Enum c standard關鍵因素是什麼,來自於特殊教育學校、高職部教師、職業教育、行政支援、教學困擾。
而第二篇論文大同大學 通訊工程研究所 汪順祥所指導 方家晟的 SIP控制數位監視系統之保密方式 (2009),提出因為有 監視電話攝影機、網路電話的重點而找出了 Enum c standard的解答。
最後網站Cx51 User's Guide: enum - Keil則補充:Define an enum type in your program as follows: enum tag name <[>= value<]>; ... Home » Language Extensions » Data Types » Standard C Types » enum.
智能障礙類特殊教育學校高職部教師職業教育之行政支援知覺與教學困擾之相關研究
為了解決Enum c standard 的問題,作者林美慧 這樣論述:
本研究旨在探討智能障礙類特殊教育學校高職部教師職業教育之行政支援知覺與教學困擾程度,並分析不同背景變項的差異情形。本研究採問卷調查法,以研究者自編問卷為研究工具。問卷調查所得資料以次數分配、百分比、平均數、標準差、t考驗、單因子變異數分析、相關分析與迴歸分析等統計程序處理。 根據本研究結果,可歸納以下結論:一、研究對象性別以女性居多,年齡為31-40歲者居多,特教背景以非特教學系(所)本科系畢業者居多,現任職務以教師兼任導師居多,高職服務年資以服務6-10年者居多,曾經教授的職業類科以服務類為最多,教師持有職業教育相關專業證照比為40.4%。二、各特殊教育學校職業教育實施以「服
務類」為最多學校實施,「工業類」則幾乎無學校實施,其中「作物栽培」與「洗車」為最普遍;各校會依學生能力做跨班或跨年段職業分組,以利職業教育教學活動的進行。三、智能障礙類特殊教育學校高職部教師職業教育教學困擾整體程度偏低;初任教師、資歷較淺者,較具有職業教育教學困擾,隨著年齡與教學年資的增長,其職業教育教學困擾則越低。四、職業教育教學困擾層面中以「學校環境因素」層面感受困擾程度最高,其餘依序為「專業知能」、「學生問題」、「課程與教學活動」。五、年齡、特教專業背景、曾經教授過的職業類科等三個背景變項對整體職業教育教學困擾有顯著差異。六、行政支援與智能障礙類特殊教育學校高職部教師職業教育教學困擾具有
負相關性,支援程度高者,教師職業教育教學困擾低。 最後依據結論對特殊教育主管機關、特殊教育學校行政單位、智能障礙類特殊教育學校高職部教師以及未來研究方向提出建議。關鍵詞:特殊教育學校、高職部教師、職業教育、行政支援、教學困擾
SIP控制數位監視系統之保密方式
為了解決Enum c standard 的問題,作者方家晟 這樣論述:
本篇論文提出以SIP為通訊基礎所建構之家用數位監視系統,並針對其運用不同之傳輸協定的安全性及私密性深入探討。SIP通訊協定為現今廣為接受之VoIP網路電話技術,並可在IP網路上用來建立、修改及終結數個多媒體訊號傳呼。論文中,IP監視電話攝影機整合了數個SIP應用服務,使得其操作上更為簡易。用戶只需撥打一通VoIP電話,便可接受到自家的即時監視畫面。這樣,用戶可對其居住環境或是家人的安全更加放心。我們也詳加探討了針對SIP的網路攻擊及威脅方式,且利用現有的各種解決方案,為設計的家用數位監視系統及IP監視電話攝影機提出了一個最安全的保密方式。最後,我們也呈現了IP監視電話攝影機實驗的數據結果及結
論。
想知道Enum c standard更多一定要看下面主題
Enum c standard的網路口碑排行榜
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#1.enum - IBM
Causes enumerations to be stored in the ANSI C or C++ Standard representation of an enumeration, which is 4-bytes signed. In C++ programs, the int container may ... 於 www.ibm.com -
#2.Data types: Struct, Union, Enum, Bit Fields. Preprocessor and ...
Enumerations – enum ... Enumeration represents named integer values ... __STDC__ – 1 if the compiler conforms to the C standard (C89 or C99). 於 cw.fel.cvut.cz -
#3.How Big Is An Enum? - Embedded.fm
The C standard specifies that enums are integers, but it does not specify the size. Once again, that is up to the people who write the compiler. 於 embedded.fm -
#4.Cx51 User's Guide: enum - Keil
Define an enum type in your program as follows: enum tag name <[>= value<]>; ... Home » Language Extensions » Data Types » Standard C Types » enum. 於 www.keil.com -
#5.Signedness of enum in C/C99/C++/C++x/GNU C/GNU C99
For completeness, I'll add that in The C Programming Language, 2nd ed., enumerators are specified as having type int (p. 215). K&R is not the C standard, ... 於 www.py4u.net -
#6.Better Enums - Clean reflective enums for C++ - GitHub Pages
No external dependencies Uses only standard C++. Installation is simple — just download enum.h . There are no objects or libraries to link with. 於 aantron.github.io -
#7.enum c++ Code Example
enum Example :unsigned char // char will work but float will not work because it is not an interger. 3. {. 4. A = 9, B = 56, c = 12//values must be integers. 於 www.codegrepper.com -
#8.5.2. Enumerations
In the C programming language, enumerations were very simple, ... With the adoption of the ANSI 2011 C++ standard, programmers can select the size of the ... 於 icarus.cs.weber.edu -
#9.Can enum member be the size of an array in ANSI-C? - Code ...
But I'm not sure if it's a GCC or clang(wich supports most,if not all GCC-extensions) extensions or really allowed by the ANSI C standard and will works ... 於 coderedirect.com -
#10.GraphicAPI - Huawei Developer
GraphicAPI Enum Info …… ... C/C++. CG Rendering Framework. GPU Extensions. Plugin Management Framework ... Enum Info. Enumeration of standard graphics APIs. 於 developer.huawei.com -
#11.Enumerations — The Swift Programming Language (Swift 5.5)
Swift enumeration cases don't have an integer value set by default, unlike languages like C and Objective-C. In the CompassPoint example above, ... 於 docs.swift.org -
#12.71598 – Wrong optimization with aliasing enums - GNU.org
get_alias_set does nothing special for ENUMERAL_TYPE which means distinct enums get distinct alias sets. Iff the C standard says that from a ... 於 gcc.gnu.org -
#13.Duplicate integer values in enum | C Programming - Coding ...
a bug down to the fact that enum symbols had duplicate integer values. Now I'm unsure if that is permissible by the standard (I guess it is, 於 www.thecodingforums.com -
#14.Translation of Enums and ADTs - Scala 3
It is a compile-time error for a Java-compatible enum to have class cases. Cases such as case C expand to a @static val as opposed to a val . This allows them ... 於 dotty.epfl.ch -
#15.Equivalent to C Defines / sparse enums - NI Community
which is standard in C but seems unnecessary complicated and not straight-forward in LabView. Is there an elegant and easy solution? 於 forums.ni.com -
#16.使用enum class 取代傳統的enum
C ++11 - the new ISO C++ standard:enum class -- scoped and strongly typed enums; LearnCpp.com:4.5a — Enum classes. 張貼者:heresy於2019/03/27 ... 於 viml.nchc.org.tw -
#17.C Language Enum Tips & Tricks - Dmitriy Kubyshkin
For all the examples in this article, I'm using C11 revision of the language, although the majority of code will work in the earlier standards as well. The most ... 於 kubyshkin.name -
#18.Char enum in c
Are enum char values supported or do I need a custom converter? public enum SomeEnum { Value1 = 'A', Value2 = 'B', Value3 = 'C', . The C++ standard says the ... 於 wasch.bar -
#19.Enumeration (or enum) in C - Tutorialspoint.dev
Enumeration (or enum) is a user defined data type in C. It is mainly used to assign names to integral constants, the names make a program easy to read and ... 於 tutorialspoint.dev -
#20.C++11 Language Extensions — Other Types, C++ FAQ
The underlying type must be one of the signed or unsigned integer types; the default is int . In the standard library, enum classes are used. 於 isocpp.org -
#21.Spinnaker C++: Types Enums
Defines from which standard namespace a node name comes from. More... enum, EYesNo { Yes = 1, No = 0, _UndefinedYesNo = 2 }. Defines the ... 於 softwareservices.flir.com -
#22.[dcl.enum]
An enumeration is a distinct type ([basic.compound]) with named constants. ... enum { a, b, c=0 }; enum { d, e, f=e+2 }; defines a, c, and d to be zero, ... 於 eel.is -
#23.if & #error giving C322 Error - enum not defined? - Keil forum
The ANSI C standard doesn't have it, so Keil's C166 doesn't have it either. I don't know if Keil Software plan to bring the C166 toolchain up to the C99 ... 於 community.arm.com -
#24.What is the size of an enum in C? - Stack Overflow
In C language, an enum is guaranteed to be of size of an int . There is a compile time option ( -fshort-enums ) to make it as short (This is ... 於 stackoverflow.com -
#25.2.1. Data Types — TI Arm Clang Compiler Tools User's Guide
... as standard macros in the C standard header file limits.h. ... Further discussion about the size of enum types can be found below in the ... 於 software-dl.ti.com -
#26.C++ 2011: Strongly-typed Enums | CodeGuru
Enumerations are an important feature of C++, but unlike in other languages, ... in the new standard with the introduction of “enum class”, ... 於 www.codeguru.com -
#27.Is there a way to make an enum unsigned in the C90 standard ...
There is no standard C way to control the type chosen for an enum. You can do it in implementation specific ways sometimes, like by adding a value to the ... 於 newbedev.com -
#28.A 3x faster enum type for Python - Quantlane - Blog
GREEN.value == 2 def is_red(c: Color) -> bool: return c is Color. ... Here is a benchmark comparing fastenum to standard enum (lower times ... 於 quantlane.com -
#29.Algebraic Computability and Enumeration Models: Recursion ...
The standard models are significant for tree computational theories, for example, Chapter 4. Definition 3.10: Let (M, a)c in C be defined such that M is a ... 於 books.google.com.tw -
#30.What guarantees does the standard actually make about the ...
What guarantees does the standard actually make about the size of an enum? ... On your system, BigMax = LONG_MAX is not permitted by Standard C. It's a ... 於 www.reddit.com -
#31.C++ "enum class" vs. C "typedef enum" - getdunne.net
The notion of enumerated type was added to the C language in the ANSI C standard, first published in 1989. The variable declaration enum ... 於 www.getdunne.net -
#32.CLanguageStandard | Apple Developer Documentation
The supported C language standard to use for compiling C sources in the package. Availability ... Declaration. enum CLanguageStandard : String, Encodable ... 於 developer.apple.com -
#33.C Language - Enumerated Types
Enumerated Types allow us to create our own symbolic names for a list of related ideas. The key word for an enumerated type is enum. For example, we could ... 於 www.cs.utah.edu -
#34.avr - 8-bit enumeration in C language - Try2Explore
Microsoft's C compiler allows you to do something like this, but it's an extension (it's standard in C++0x): enum Foo : unsigned char { blah = 0, ... 於 try2explore.com -
#35.CEF Forum • Definition of enum does not conform to ISO C ...
... not conform to ISO C standard. Post by CismonX » Thu Jul 01, 2021 4:48 am. When using the CEF C API, I got the following warnings during compilation:. 於 www.magpcss.org -
#36.Enumeration in C | Enum in C | How to use enums in C - Morioh
This C Programming tutorial Series uses Visual training method, offering users increased retention and accelerated learning. In C Standard, there are four ... 於 morioh.com -
#37.9.2 — Enumerated types - Learn C++
The C++ standard says the enum size needs to be large enough to ... However, in C++, true and false are defined as keywords instead of ... 於 www.learncpp.com -
#38.Enum in C#
NET application. What is Enum in C#?. C# enum is a value type with a set of related named constants often referred as an enumerator list ... 於 www.c-sharpcorner.com -
#39.Problems with enums across a dll interface? - C / C++ - Bytes ...
The C++ standard encourages implementors to keep enums no larger than an int when possible. If you use a compiler option to change the size ... 於 bytes.com -
#40.The Mysterious enum Keyword | C For Dummies Blog
The word enum is short for enumerate, which is the process of assigning numbers to something or listing out specific items. In the C language, ... 於 c-for-dummies.com -
#41.nullptr, enum classes (strongly typed enumerations) and cstdint
Learn how C++11 improves type safety with strongly typed enum classes, ... One problem that C++ has suffered from is a lack of standard types that provide ... 於 www.cprogramming.com -
#42.enum in c, seven important points you should know - Aticleworld
An enum in C is a user-defined data type and it consists set of named constant integer. Using the enum keyword, we can declare an enumeration type with ... 於 aticleworld.com -
#43.Is enum type legal in va_start? - Google Groups
netcom.) Does the following code conform to the C standard? One compiler complains "The second argument to the va_start() call is not the last formal parameter 於 groups.google.com -
#44.Is the last comma in C enum required?
Enumeration type definition, C only C99 allows a trailing comma between the last ... The C++ Standard (7.2) forbids such declaration: enum-specifier: enum ... 於 www.thetopsites.net -
#45.enum 类型到底有多大 - CSDN博客
这里因为在C的standard中:. 6.7.2.2 Enumeration specifiers [...] Constraints The expression ... 於 blog.csdn.net -
#46.C von A bis Z – 15.10 Der Aufzählungstyp »enum
Geplant war (laut ANSI-C-Standard) enum, um ohne Casts verschiedene integrale Typen vermischen zu können, was ja sonst in der Regel einen Compiler-Fehler ... 於 openbook.rheinwerk-verlag.de -
#47.Enum in C - enumerated list of constants - C Programming
allows multiple names in the list to have the same value ...has the advantage to follow the standard scope rules in C ...requires correct(unique) naming of the ... 於 www.c-programming-simple-steps.com -
#48.Enum with negative member fail
Here are the C89/C90 and C99 standards: ... In C, enums are not exactly "type-proof", but better than just assigning some #define'd values. 於 www.microchip.com -
#49.4.5 Enumeration | Foundation: The Objective-C Standard Library
With 10.5, Apple added a fast enumeration system. This uses a new for loop construct, part of Objective-C 2.0, which handles collections. 於 www.informit.com -
#50.使用enum class 取代傳統的enum
C ++11 – the new ISO C++ standard:enum class — scoped and strongly typed enums; LearnCpp.com:4.5a — Enum classes. 幫忙推廣一下吧! 於 kheresy.wordpress.com -
#51.C Programming Language: Types, Structures, and Enumeration
The following table provides details of some of the standard types. Now that we know about types, let's jump into the ... 於 jraleman.medium.com -
#52.Enumerations - cppreference.com
enum Color; // Error: no forward-declarations for enums in C enum Color { RED, GREEN, BLUE };. Enumerations permit the declaration of named ... 於 en.cppreference.com -
#53.Can I define each enum value to be 64 bits wide in C? - Quora
It depends on the size of an int in your compiler implementation. The C11 standard states: > The expression that defines the value of an enumeration ... 於 www.quora.com -
#54.Enumeration || Preprocessor || Library Functions in C | Codedec
This will include Enumeration, the Preprocessor, and Standard library functions in C. Now let's move on further and discuss the Enumeration concept used in ... 於 codedec.com -
#55.12.2 C-Style Enumerations
enum Color {RED, ORANGE, YELLOW, GREEN, BLUE, INDIGO, VIOLET}; creates a new type named Color whose values are the seven colors listed between the curly. 於 cs.calvin.edu -
#56.Start using enum class in your code, if possible
The reason why it is so frequent is that enumerations are not type safe in the standard C++; you may get easily confused about what should ... 於 hownot2code.com -
#57.Enums
In prior releases, the standard way to represent an enumerated type was the int Enum ... In their simplest form, these enums look just like their C, C++, ... 於 docs.oracle.com -
#58.converting a C enum to Delphi - General Help
Given the following C type definition: /** image pixel layout ... You can read the C standard to find out how it handles that enum. 於 en.delphipraxis.net -
#59.enum ; past, present and future - Sticky Bits - Powered by ...
enum's in C++0x. To address C++98's weaknesses, the soon-to-be ratified new C++ standard has added some additional syntax. Your compiler may ... 於 blog.feabhas.com -
#60.Coding Standard - Unreal Engine 4 Documentation
Historically, UE has avoided direct use of the C and C++ standard libraries. ... Enum classes should always be used as a replacement for old-style ... 於 docs.unrealengine.com -
#61.c preprocessor tricks C #define enum to string ... - PURL.org
C preprocessor applications. Printing enum values as strings. This example shows how to use the preprocessor in order to populate an ... 於 www.purl.org -
#62.Enumerated Types (enum) in C - BTech Smart Class
In C programming language, an enumeration is used to create user-defined datatypes. Using enumeration, integral constants are assigned with names and we use ... 於 www.btechsmartclass.com -
#63.C Programming Tutorial for Beginners 30 - Enumeration in C
In C Standard, there are four basic data types. These data types are int, char, float, and double. Every ... 於 www.youtube.com -
#64.Using Enum Classes as Bitfields - ACCU
Scope enums have many advantages over standard enums. Anthony Williams shows how to use them as bitmasks. ... This is also allowed for plain enum in C++11. 於 accu.org -
#65.Is there a way to find the cardinality (size) of an enum in C++?
There are two: on the number of constants The answer is the standard computer answer: it depends. The C standard specifies that enums are integers, but it does ... 於 coddingbuddy.com -
#66.AVR micro-optimization: Avr-gcc and --short-enums - The Odd ...
Now, if you do a little research, you'll find that the size of an enum is unspecified by the C standard: it is implementation dependent. 於 blog.oddbit.com -
#67.2018 api - swDrawingViewTypes_e Enumeration - SolidWorks ...
C ++/CLI. public enum class swDrawingViewTypes_e : public System.Enum ... swDrawingSheet, 1 = Drawing sheet. swDrawingStandardView, 6 = Standard view ... 於 help.solidworks.com -
#68."enum" members other than the first one should not be ... - C
C static code analysis ... Type specifiers should be listed in a standard order ... enum color { red = 3, blue, green, yellow = 5 }; // Noncompliant; ... 於 rules.sonarsource.com -
#69.Coding Conundrums: enum vs. #defines - EEWeb
Arduino programs are created as a mix of C and C++ (actually, C++ is C augmented with object-oriented programming capabilities). 於 www.eeweb.com -
#70.Array initialization with enum indices in C but not C++ - Eli ...
Turns out that if you want to achieve the same effect in C++, you're out of luck. Standard C++ does not support the named initializer ... 於 eli.thegreenplace.net -
#71.Handbook - Enums - TypeScript
How TypeScript enums work. ... C ,. } Try. The enum member is initialized with a constant enum expression. A constant enum expression is a subset of ... 於 www.typescriptlang.org -
#72.Scoped (class) enums: fundamentals and examples - nextptr
Lastly, C++17 standard added the list-initialization ("{}") support for scoped enums. We would discuss that too. 於 www.nextptr.com -
#73.V1016. The value is out of range of enum values. This causes
The underlying 'enum' type is always 'int' in the C language. Note 2: This rule is only relevant for C++ compilers that calculate the actual ... 於 pvs-studio.com -
#74.Specify size of enum? - NXP Community
In this case, it seems the sizeof enum is fixed at 16-bit. ... The size of an enum is indeed implementation-defined by the C standard, but practically it is ... 於 community.nxp.com -
#75.MySQL 8.0 Reference Manual :: 11.3.5 The ENUM Type
An ENUM is a string object with a value chosen from a list of permitted values that are enumerated ... In the C API, ENUM values are returned as strings. 於 dev.mysql.com -
#76.Enumerated type - Wikipedia
C exposes the integer representation of enumeration values directly to the programmer. Integers and enum values can be mixed freely, and all arithmetic ... 於 en.wikipedia.org -
#77.INT09-C. Ensure enumeration constants map to unique values
Search for vulnerabilities resulting from the violation of this rule on the CERT website. Related Guidelines. SEI CERT C++ Coding Standard, VOID INT09-CPP. 於 wiki.sei.cmu.edu -
#78.ISO 11731:1998(en), Water quality
Annexes A, B, C and D of this International Standard are for information only. ... [1], ISO 8199:1988, Water quality — General guide to the enumeration of ... 於 www.iso.org -
#79.C++11中enum class的使用- 雪球球 - 博客园
C ++11新标准引入了限定作用域的枚举类型(scoped enumeration)。 ... defines this as an scoped enumeration instead of a standard enumeration RED, ... 於 www.cnblogs.com -
#80.C-style enums in FFI (and a proposal to lump in with unions)
C -style unsafe enums would be used to unsafely match C enum values, ... By the standard, one should not expect to be able to use ... 於 internals.rust-lang.org -
#81.enum — 枚舉型態— 你所不知道的Python 標準函式庫用法07
enum 是Python 裏用來建立枚舉形態的標準函式庫。enum 算是比較新的標準函式庫 ... PEP 435 – Adding an Enum type to the Python standard libarary ... 於 blog.louie.lu -
#82.enum class - 游戏蛮牛- C++中文翻译用户手册
发布时间: 2016年6月在命名空间范围内声明枚举,该枚举是用户定义的类型,其包含称为枚举数的一组命名常数。所有运行时备注C++/CX 和C++/CLI 支持public enum class. 於 docs.manew.com -
#83.Enum In C Programming Examples
Values can be overridden by that contains interesting facts about c standard integer value assigned arbitrary data type in c code? Click target from arithmetic. 於 www.bifmc.org -
#84.Get to Know C++11 Scoped and Based Enum Types
The only requirements in the C++03 standard are that the underlying type is an integral type that can represent all the enumerator values ... 於 smartbear.com -
#85.enum — Support for enumerations — Python 3.10.0 ...
However, they still can't be compared to standard Enum enumerations: ... A = 5 ... B = 4 ... C = 3 ... D = 2 ... F = 1 ... >>> Grade.C < Grade.A True ... 於 docs.python.org -
#86.The C Book — Enums - GBdirect Publications
It's better scoped because the declaration of enumerations follows the standard scope rules for C, whereas #define statements have file scope. 於 publications.gbdirect.co.uk -
#87.enum c語言[C] - Zoap
In C, you must use enum Foo until you provide a typedef for it. ... Specifically, this manual aims to document: The 1989 ANSI C standard, commonly known as ... 於 www.zoapda.co -
#88.Masques de bit conformes C ++ 11 standard utilisant la classe ...
Pouvez-vous implémenter des masques de bit sécurisés de type conforme (comme décrit au 17.5.2.1.3 du projet n3242) en utilisant la classe enum? 於 www.it-swarm-fr.com -
#89.Enumeration (or enum) in C - GeeksforGeeks
Enumeration (or enum) is a user defined data type in C. It is mainly used to assign names to integral constants, the names make a program ... 於 www.geeksforgeeks.org -
#90.Enumeration formulas for standard young tableaux of ...
Abstract. This paper focuses on the combinatorial enumeration of the truncated hollow standard Young tableaux of approximate C shape. 於 iopscience.iop.org -
#91.C Language Tutorial => Typedef enum
Example#. There are several possibilities and conventions to name an enumeration. The first is to use a tag name just after the enum keyword. enum color { RED, ... 於 riptutorial.com -
#92.Setting up enumeration literals for generating C code (C code)
In addition to the standard Enumeration Literal properties in Modeler, you can apply the «C Enum Literal» stereotype to an Enumeration Literal, ... 於 support.ptc.com -
#93.C Declare Enum Type - SureShade
Enumeration type in C Is thus possible to precede a variable of enum type yet we. ... The C standard specifies that enums are integers, but bond does one. 於 www.sureshade.com -
#94.Missing enum case in switch - LGTM
A switch statement over an enum type is missing a case for some enum constant and does not have a default case. ... Language:C/C++. Severity:Warning. 於 lgtm.com -
#95.列舉類別(C++/CLI 和C++/CX)
C ++/CX 和C++/CLI 支援類似於標準C++ enum class 的public enum class ... enum public enum class m { a, b }; // standard enum public enum n { c, ... 於 docs.microsoft.com -
#96.N2533 ISO/IEC 9899 - open-std
This is for increased type safety and compatibility with C++. ... enum E1 c = m11 | m12;. /* legal – no change */ c = 2; ... current draft standard. 於 www.open-std.org -
#97.C++ Core Guidelines: Rules for Enumerations
Since C++11, you can specify the underlying type of the enumeration and save memory. Per default the type of a scoped enum is int and, ... 於 www.modernescpp.com -
#98.C enum (Enumeration) - Programiz
In C programming, an enumeration type (also called enum) is a data type that consists of integral constants. To define enums, the enum keyword is used. 於 www.programiz.com