$17.$$

break;

case

$20.$$

break

case

$23.$$

break;

$25.$case

$26.$$

break;

$28.\}$

return $//$ returning variable

$30).$

$31.$echo $"$$Result $1$st Number: $Number$\_$no$\_12$nd Numbe

r: $Number$\_$no$\_2"$;

$32.$echo "Answer is:$".$MyCalculator$($$Number$\_$no$\_1,$$Number$\_$no$\_2,$ $Result$)$;

$33.//$ you need to pass $ Result as argument of that function

$34.?>$

$$ body$>$

$51.$

$52\mathrm{.}53.$

$>54.$ body $>$

$51.$

$52\mathrm{.}53.$