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Ideone中的C ++ 14和C ++ 5.1有什么区别？

[英]What is the difference between C++ 14 and C++ 5.1 in Ideone?

原文 2015-08-06 11:15:14 5 2 c++

I get to choose an option while I do competitive programming. 在进行竞争性编程时，我可以选择一个选项。 I have tried both and most of the times I prefer C++ 14. Does choosing the other one make any difference in an answer or a compilation? 我已经尝试了两种方式，而且大多数时候我更喜欢C ++ 14.选择另一种方式会对答案或编译产生任何影响吗？

2 个解决方案

C++14 is an international language standard , formally entitled ISO/IEC 14882:2014(E). C ++ 14是一种国际语言标准 ，正式名称为ISO / IEC 14882：2014（E）。 The nomenclature indicates that this is the version of the C++ language published by ISO in 2014. 命名表明这是ISO在2014年发布的C ++语言的版本。

C++ 5.1 does not exist . C ++ 5.1不存在 。 In the 1980s there were versions of pre-standard "C++" that Bjarne Stroustrup created for fun, variously called C++ 1.0 and C++ 2.0. 在20世纪80年代，Bjarne Stroustrup为了好玩而创建了预标准“C ++”的版本，各种称为C ++ 1.0和C ++ 2.0。 However, this versioning system did not reach 5.1 by the time the language became standardised as ISO/IEC 14882:1998(E) in 1998. 然而，当语言在1998年被标准化为ISO / IEC 14882：1998（E）时，该版本控制系统没有达到5.1。

It is possible that you are instead referring to the version number of some Integrated Development Environment (a piece of software for your computer, consisting of a text editor and wrapping a compiler/debugger). 您可能会参考某些集成开发环境（一种用于您的计算机的软件，包括文本编辑器和包装编译器/调试器）的版本号。 For example, you could be talking about version 5.1.0.0 of the IDE fork known as "Orwell Dev-C++", which dates back to 2011 . 例如，您可能正在谈论称为“Orwell Dev-C ++”的IDE分支的版本5.1.0.0，其可以追溯到2011年。

On the other hand, if these are options presented to you as languages in some online tool, the tool is wrong . 另一方面，如果这些是在某些在线工具中作为语言呈现给您的选项，则该工具是错误的 。 For example, ideone.com offers "c++ 5.1" which is, apparently, GCC 5.1 in C++98 mode . 例如， ideone.com提供“c ++ 5.1”，显然是C ++ 98模式下的GCC 5.1 。

C++14 is a version of the C++ standard. C ++ 14是C ++标准的一个版本。 The standard specifies the types, syntax, semantics, etc that all C++ compilers must (try to) adhere to. 该标准指定了所有C ++编译器必须（尝试）遵守的类型，语法，语义等。

Dev-C++ 5.1 is a version of an IDE, of which there are many others. Dev-C ++ 5.1是IDE的一个版本，其中还有许多其他版本。 It uses GCC under the hood as the compiler. 它使用GCC作为编译器。 Depending on the GCC version, it may support different iterations of the C++ standard, which will affect which library features are available. 根据GCC版本，它可能支持C ++标准的不同迭代，这将影响可用的库功能。