warning: unsupported value
position: absolute; width: 12.9em; transform: translateX(16.27em);
and you know, some countries uses decimal point as comma - not point.
so scanf function cannot read "12.9em" if we set NUMERIC at that country.
Such as French.
// query LC_NUMERIC char* locale = setlocale(LC_NUMERIC, NULL); // set LC_NUMERIC char* locale = "en_US.utf8"; setlocale(LC_NUMERIC, locale);
if LC_NUMERIC was set to "frCA.UTF-8",
12.9em can't be read as a Decimal.
The correct should be like "en_US.utf8"