error print code for mastodon

error_print_code_for_mastodon.cc

#include <windows.h>
#include <cstdio>

static LPWSTR getErrorStr(DWORD code) {
  LPWSTR buffer = nullptr;
  FormatMessageW(FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_ALLOCATE_BUFFER,
                 nullptr, code, LANG_USER_DEFAULT, (LPWSTR)&buffer, 0,
                 nullptr);
  return buffer;
}

int main() {
	DWORD code = 0x80000003;
	auto str = getErrorStr(code);
	if (str) {
		wprintf(L"%s\n", str);
		LocalFree(str);
	}
}