How to input Chinese characters in c++

There are three ways to input Chinese characters in C: use the std::wcin stream, which is specially used to input multi-byte characters. Use cin.imbue() to associate the stream to a specific locale, such as zh_CN.UTF-8. Convert non-UTF-8 encoded Chinese characters to wide characters using a custom conversion function.

How to input Chinese characters in C

Introduction:
In C Inputting Chinese characters requires processing multi-byte character encoding. This article will explore common methods, including using std::wcin, cin.imbue(), and custom conversion functions.

Using std::wcin:
The std::wcin stream is used to input wide characters, that is, multi-byte characters. It can receive UTF-16 or UTF-32 encoded Chinese characters.

<code class="cpp">#include <iostream>

int main() {
  wchar_t ch;
  std::wcin >> ch;
  std::cout << ch << std::endl;
  return 0;
}</code>

Using cin.imbue(): The
cin.imbue() function can associate a stream to a specific locale that specifies the character encoding. For Chinese character input, you can use zh_CN.UTF-8 or other locales that support UTF-8 encoding.

<code class="cpp">#include <iostream>
#include <locale>

int main() {
  std::cin.imbue(std::locale("zh_CN.UTF-8"));
  char ch;
  std::cin >> ch;
  std::cout << ch << std::endl;
  return 0;
}</code>

Use a custom conversion function:
For non-UTF-8 encoded Chinese characters, you can use a custom conversion function to convert multi-byte characters to wide characters. Take GB2312 encoding as an example:

<code class="cpp">#include <iostream>
#include <codecvt>

std::wstring gb2312_to_wstring(const char* gb2312) {
  std::codecvt_utf8<wchar_t> cvt;
  std::wstring_convert<std::codecvt_utf8<wchar_t>> conv;
  return conv.from_bytes(gb2312);
}

int main() {
  char gb2312[] = "你好";
  std::wstring wstr = gb2312_to_wstring(gb2312);
  std::wcout << wstr << std::endl;
  return 0;
}</code>

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