c++ - 我如何提供 "Japanese/Chinese"数据？

Question

上下文: 日本样本数据，不会像样本中那样显示 (cout)。为什么会这样？

代码如下:

std::setlocale(LC_ALL,"");
wchar_t *pStrAddr = L"日本語";
wcout <<"pStrAddr:: "<< pStrAddr << std::endl;

观察到的输出为:

pStrAddr:: �,�

Answer 1

请查看下面的代码以获得答案，它现在运行良好。

Locale setting Code 1:

setenv("LANG","en_US.utf8",1);              //"en_GB.utf8" or "ja_JP.utf8" etc.
cout << "GET ENV .... " << getenv("LANG");
setlocale(LC_ALL,"");

Locale setting Code 2:

setlocale(LC_ALL,"en_US.utf8");

我还必须使用 wcstombs连同 setlocale .这是我修改后的有效代码。

setlocale(LC_ALL,"en_US.utf8");
wchar_t *pStrAddr = L"日本語";
wcout <<"pStrAddr:: "<< pStrAddr << std::endl;
cout << "HARDCODED : 日本語" << endl;

char strBuffer[11];                 //char []
int retStrAddr = wcstombs ( strBuffer, pStrAddr, sizeof(strBuffer) );
if (retStrAddr==11)
    strBuffer[11-1]='\0';   //since, not NULL terminated
//to string, as per converter support
std::cout << "multibyte strBuffer: " << strBuffer << '\n';

输出:

pStrAddr:: �,�
HARDCODED : 日本語
multibyte strBuffer: 日本語