What is the ending value of y$?$

Given that sqrt$($u$)$ returns the square root of u$.$ pow$($u$,$ v$)$ returns u raised to the power of v$.$

x $=9\mathrm{.}0$;

y $=4\mathrm{.}0$;

y $=$ pow$($sqrt$($x$),$ sqrt$($y$))$; C$++$