to_string不是std的成员，说g ++（mingw） [英] to_string is not a member of std, says g++ (mingw)

问题描述

我正在制作一个小词汇记忆程序，在这个程序中，词语会随机闪现在我的意思之中。我想用Bjarne Stroustroup告诉我们的标准C ++库，但是我遇到了一个看起来很奇怪的问题。

I am making a small vocabulary remembering program where words would would be flashed at me randomly for meanings. I want to use standard C++ library as Bjarne Stroustroup tells us, but I have encountered a seemingly strange problem right out of the gate.

我想将 long 整数更改为 std :: string 以便能够将其存储在文件中。我已经雇用了 to_string（）。问题是，当我用g ++（版本号4.7.0 --version标志中提到的）编译它时，它说：

I want to change a long integer into std::string so as to be able to store it in a file. I have employed to_string() for the same. The problem is, when I compile it with g++ (version 4.7.0 as mentioned in its --‍version flag), it says:

PS C:\Users\Anurag\SkyDrive\College\Programs> g++ -std=c++0x ttd.cpp
ttd.cpp: In function 'int main()':
ttd.cpp:11:2: error: 'to_string' is not a member of 'std'

出现此错误的程序是：

My program that gives this error is:

#include <string>

int main()
{
    std::to_string(0);
    return 0;
}

但是，我知道这不可能是因为msdn库清楚地说明了它存在和表示可以使用 -std = c + + 0x 标志。我在做什么错了？

But, I know it can't be because msdn library clearly says it exists and an earlier question on Stack Overflow (for g++ version 4.5) says that it can be turned on with the -std=c++0x flag. What am I doing wrong?

推荐答案

这是MinGW下的一个已知错误。 相关的Bugzilla 。在评论部分，您可以获得一个补丁，以使其与MinGW协同工作。

This is a known bug under MinGW. Relevant Bugzilla. In the comments section you can get a patch to make it work with MinGW.

这个问题在MinGW-w64发行版中得到了修正，它比 MinGW-w64项目。尽管有这个名字，该项目还提供了32位和64位的工具链。 Nuwen MinGW发行版也解决了这个问题。

This issue has been fixed in MinGW-w64 distros higher than GCC 4.8.0 provided by the MinGW-w64 project. Despite the name, the project provides toolchains for 32-bit along with 64-bit. The Nuwen MinGW distro also solves this issue.

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