如何让我的环境当前语言环境？ [英] How to get current locale of my environment?

问题描述

曾试图按照Linux的code，但总是在不同的返回'C' LANG 设置。

Had tried following code in Linux, but always return 'C' under different LANG settings.

#include <iostream>
#include <locale.h>
#include <locale>
using namespace std;

int main()
{
    cout<<"locale 1: "<<setlocale(LC_ALL, NULL)<<endl;
    cout<<"locale 2: "<<setlocale(LC_CTYPE, NULL)<<endl;

    locale l;
    cout<<"locale 3: "<<l.name()<<endl;
}

$ ./a.out
locale 1: C
locale 2: C
locale 3: C
$
$ export LANG=zh_CN.UTF-8
$ ./a.out
locale 1: C
locale 2: C
locale 3: C

我应该怎么做在Linux下（如Ubuntu），以获得当前区域设置？

What should I do to get current locale setting in Linux(like Ubuntu)?

另一个问题是，是用同样的方式来获得的区域设置在Windows？

Another question is, is it the same way to get locale in Windows?

推荐答案

从男子3的setlocale （新格言：如果有疑问，请阅读整个手册页）。

From man 3 setlocale (New maxim: "When in doubt, read the entire manpage."):

如果区域设置为，，这应该是根据环境变量设置进行修改语言环境的每个部分。

If locale is "", each part of the locale that should be modified is set according to the environment variables.

因此​​，我们可以通过调用的setlocale 在程序开始读取环境变量，如下：

So, we can read the environment variables by calling setlocale at the beginning of the program, as follows:

#include <iostream>
#include <locale.h>
using namespace std;

int main()
{
    setlocale(LC_ALL, "");
    cout << "LC_ALL: " << setlocale(LC_ALL, NULL) << endl;
    cout << "LC_CTYPE: " << setlocale(LC_CTYPE, NULL) << endl;
    return 0;
}

我的系统不支持 zh_CN的的语言环境，如下面的输出显示：

My system does not support the zh_CN locale, as the following output reveals:

$ ./a.out 
LC_ALL: en_US.utf8
LC_CTYPE: en_US.utf8
$ export LANG=zh_CN.UTF-8
$ ./a.out 
LC_ALL: C
LC_CTYPE: C

Windows系统：我不知道的Windows语言环境的想法。我建议开始与 MSDN搜索，然后打开的单独的的堆栈溢出的问题，如果您还有问题。

Windows: I have no idea about Windows locales. I suggest starting with an MSDN search, and then opening a separate Stack Overflow question if you still have questions.

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