什么是C，C99，ANSI C和GNU C之间的区别？关于C的各种版本的一般混乱 [英] What is the difference between C, C99, ANSI C and GNU C? A general confusion regarding the various versions of C

问题描述

我在<一开始编程实践href=\"http://www.$c$cchef.com/problems/easy?sort_by=SuccessfulSubmission&sorting_order=desc\">$c$cchef并已通过C和C99之间的的区别混淆。什么是C平均在这里？它是C89？查看语言在此提交。它包含了C和C99。

I have started programming practice on codechef and have been confused by the difference between C and C99. What does C mean here? Is it C89? Check the languages at the bottom of this submit. It contains both C and C99.

我在互联网上的一些所谓的GNU C.发现是否有不同的C为Linux / Unix系统？这些标准的C类标准由ANSI？我也看过一些地方C99严。这是什么？

I found on the internet something called GNU C. Is there a different C for linux/unix systems? Are these compliant to the C standards by ANSI? I have also read in some places "C99 strict". What is this?

是否有使用其他不同的标准的C？是不是有什么称为C 4.3.2或者是在当前使用的gcc版本？

Are there any other different standards of C in use? Is there something called C 4.3.2 or is it the gcc version in current use?

编辑：

这，的这，这的帮助。我会更多的搜索和编辑没有回答的事情。

This, This, This helped. I'll search more and edit the things that are left unanswered.

我不是一个编程新手。我知道C语言是什么。我知道，有不同的C类标准由ANSI C89一样，C99和C11。

I am not a programming newbie. I know what C language is. I know that there are the different C standards by ANSI like C89, C99 and C11.

推荐答案

• 标准化之前，一切都通常被称为K＆放大器; RC的名著后，用丹尼斯里奇，C语言的发明者，作为作者之一。这是C语言，从1972年至1989年。

• Everything before standardization is generally called "K&R C", after the famous book, with Dennis Ritchie, the inventor of the C language, as one of the authors. This was "the C language" from 1972-1989.

  第一个C标准发布1989年全国在美国，其国家标准协会制订的ANSI。此版本被称为C89或ANSI-C。从1989- 1990年，这是C语言。

  The first C standard was released 1989 nationally in USA, by their national standard institute ANSI. This release is called C89 or ANSI-C. From 1989-1990 this was "the C language".

  一年后，美国的标准是国际公认和ISO（ISO 9899：1990）上发表。此版本被称为C90。从技术上讲，它是相同的标准为C89 / ANSI-C。在形式上，它取代C89 / ANSI-C，使它们过时。从1990- 1999年，C90是C语言。

  The year after, the American standard was accepted internationally and published by ISO (ISO 9899:1990). This release is called C90. Technically, it is the same standard as C89/ANSI-C. Formally, it replaced C89/ANSI-C, making them obsolete. From 1990-1999, C90 was "the C language".

  请注意，自1989年以来，ANSI还没有任何与C语言。程序员仍然在谈论ANSI C，一般还没有得到有关这意味着什么线索。 ISO拥有C语言，通过标准ISO 9899。

  Please note that since 1989, ANSI haven't had anything to do with the C language. Programmers still speaking about "ANSI C" generally haven't got a clue about what it means. ISO "owns" the C language, through the standard ISO 9899.

  在1999年，C标准进行了修订，许多事情发生了变化（ISO 9899：1999）。这个标准的版本被称为C99。从1999-2011，这是C语言。大多数C编译器仍遵循这个版本。

  In 1999, the C standard was revised, lots of things changed (ISO 9899:1999). This version of the standard is called C99. From 1999-2011, this was "the C language". Most C compilers still follow this version.

  在2011年，C标准再被更改了（ISO 9899：2011）。此版本称为C11。这是目前的C语言的定义。

  In 2011, the C standard was again changed (ISO 9899:2011). This version is called C11. It is currently the definition of "the C language".

  C99严可能是指一个编译器设置强制编译器按照字母的标准。有一个长期的符合条件的实现的C标准。本质上，它的意思是：这个编译器实际上实现了正确的C语言。即正确实现C语言程序被正式称为的严格符合程序的

  "C99 strict" likely refers to a compiler setting forcing a compiler to follow the standard by the letter. There is a term conforming implementation in the C standard. Essentially it means: "this compiler actually implements the C language correctly". Programs that implement the C language correctly are formally called strictly conforming programs.

  GNU C意味着两件事情。无论是C编译器本身自带的GNU编译器集合（GCC）的一部分。或者，它可能意味着GCC C编译器使用非标准的默认设置。如果用 GCC编译program.c 那么你不按照C标准编译，而是一个非标准的GNU设置，这可能是GNU简称C。例如，整个Linux内核是非标准的GNU C制成，而不是在标准C

  "GNU C" can mean two things. Either the C compiler itself that comes as part of the GNU Compiler Collection (GCC). Or it can mean the non-standard default setup that the GCC C compiler uses. If you compile with gcc program.c then you don't compile according to the C standard, but rather a non-standard GNU setup, which may be referred to as "GNU C". For example, the whole Linux kernel is made in non-standard GNU C, and not in standard C.

  如果您想根据C标准来编译程序，应键入的gcc -std = C99 -pedantic-错误。如果你的GCC版本支持与C11 C99替换

  If you want to compile your programs according to the C standard, you should type gcc -std=c99 -pedantic-errors. Replace c99 with c11 if your GCC version supports it.

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