how to encode utf-8 cpp
#include <iostream>
#include <string>
#include <locale>
#include <codecvt>
int main()
{
// UTF-8 data. The character U+1d10b, musical sign segno, does not fit in UCS2
std::string utf8 = u8"z\u6c34\U0001d10b";
// the UTF-8 / UTF-16 standard conversion facet
std::wstring_convert<std::codecvt_utf8_utf16<char16_t>, char16_t> utf16conv;
std::u16string utf16 = utf16conv.from_bytes(utf8);
std::cout << "UTF16 conversion produced " << utf16.size() << " code units:\n";
for (char16_t c : utf16)
std::cout << std::hex << std::showbase << c << '\n';
}