b$.$ Fill in the underlines below to complete the definitions of the member functions of the classes circle and cylinder.

Answer:

print$()$ const

$$

x$-$coordinate: $"$ e end$1$;

$<mtext\; id="EditorElement\_62333"></mtext><mi\; id="EditorElement\_62334">"</mi>$y$-$coordinate: $"$ e endl;

$$ "radius: $"$ endi;

void circle setRadius $($ double r$)$

i$.$

radius $=r$;

else

radius $=0\mathrm{.}0$;

$\}$

setcenter

$x,$

Y$)$

i

if $)(0$

else

xcoordinate $=0\mathrm{.}0$;