SDL_UCS4ToUTF8 - Convert a single Unicode codepoint to UTF-8.

       This function is available since SDL 3.2.0.

Simple Directmedia Layer                           SDL 3.2.20                                  SDL_UCS4ToUTF8(3)

       The buffer pointed to by dst must be at least 4 bytes long, as this function may generate between 1 and 4
       bytes of output.

       This  function  returns  the  first  byte  _after_  the newly-written UTF-8 sequence, which is useful for
       encoding multiple codepoints in a loop, or knowing where to write a NULL-terminator character to end  the
       string (in either case, plan to have a buffer of _more_ than 4 bytes!).

       If codepoint is an invalid value (outside the Unicode range, or a UTF-16 surrogate value, etc), this will
       use U+FFFD (REPLACEMENT CHARACTER) for the codepoint instead, and not set an error.

       If  dst  is  NULL,  this  returns  NULL immediately without writing to the pointer and without setting an
       error.

codepoint
              a Unicode codepoint to convert to UTF-8.

       dst    the location to write the encoded UTF-8. Must point to at least 4 bytes!

       SDL_UCS4ToUTF8 - Convert a single Unicode codepoint to UTF-8.

       Returns the first byte past the newly-written UTF-8 sequence.

#include<SDL3/SDL_stdinc.h>char*SDL_UCS4ToUTF8(Uint32codepoint,char*dst);

       It is safe to call this function from any thread.