Question $1($Mandatory$)(100$ points$)$

Rewrite the following nested if$-$else statement

$1.$ to a switch statement that accomplishes exactly the same thing.

$2.$ to if$-$elseif statement that accomplishes exactly the same thing.

Assume that num is an integer variable that has been initialized, and that there are functions f$1,$ f$2,$ f$3,$ and f$4$ already created. Just simply calls the four functions in the statement

$---------------------------------------$

if num $<-2||$ num $>4$

f$1($num$)$

else

if num $<=2$

if num $>=0$

f$2($num$)$

else

f$3($num$)$

end

else

f$4($num$)$

end

end