The first printf statement below prints $"C_{3F}".$ What is printed by the second printf?

union $\{$

short $w$;

char $b[2]$;

$\}x$;

$x.w=0xC_{3F}$;

printf$("\%04$X

$",$ x$.$w$)$;

$x.b[1]=0xA6$;

printf$("\%04$X

$",$ x$.$w$)$;