错误C2894:无法声明模板具有"C"链接 [英] Error C2894: templates cannot be declared to have 'C' linkage

问题描述

嗨！

我正在使用Microsoft Visual C ++ 6.0.
我想在我的C ++代码中包含一个cs.h文件，如下所示:

Hi!

I''m working with Microsoft Visual C++ 6.0.
I want to I included a cs.h file in my C++ code like this:

extern "C"
{
   #include "cs.h" 
}

但是，当我使用时，出现以下错误:
d:\ program files \ microsoft visual studio \ vc98 \ include \ math.h(514):错误C2894:无法声明模板具有"C"链接

有人可以帮忙吗?
提前致谢. :)

But, when I use then I have the following error:
d:\program files\microsoft visual studio\vc98\include\math.h(514) : error C2894: templates cannot be declared to have ''C'' linkage

Can anyone help?
Thanks in advance. :)

推荐答案

错误消息不是全部说明吗?您的包含文件包括math.h，其中包含模板函数.模板不是C，因此您无法将其设置为extern "C".

因此，最大的问题是，为什么要将包含文件的完整内容粘贴在extern "C"中?如果原始程序员打算在C程序中使用他或她的代码，那么他们会为您完成这项工作.由于没有，所以有以下两种选择之一:

-他们不打算在C程序中使用它
-他们确实打算将其从C程序中使用，但没有由C ++编译器进行编译

无论哪种方式，最好的选择就是修改源代码，这样就不需要客户端程序员来破解它.

干杯，

Ash

Doesn''t the error message say it all? Your include file is including math.h which contains a template function. Templates aren''t C so you can''t make them extern "C".

So the big question is why do you want to stick the complete contents of an include file in an extern "C"? If the original programmer had intended his or her code to be used from a C program they''d have done that for you. As they haven''t there''s one of two options:

- They didn''t intend it to be used from a C program
- They did intend it to be used from a C program but not have it compiled by a C++ compiler

Either way the best bet is to modify the source so it doesn''t require the client programmer to hack around it.

Cheers,

Ash

我也有同样的问题！

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