Rewrite the following nested if-else statement as a switch statement that accomplishes exactly the same thing. Assume that num is an integer variable that has been initialized, and that there are functions f1, f2, f3, and f4. Do not use any if or if-else statements in the actions in the switch statement, only calls to the four functions.

Answer explained below

Explanation:

The following is the nested if-else statement:

% if-based statement

if num < -2 ||  num > 4

          f1(num)

else

     if num <=2

          if num >= 0

              f2(num)

          else

              f3(num)

          end

     else

          f4(num)

     end

end

NOTE: the num is an integer variable that has been initialized and that there are functions f1, f2, f3 and f4.

The nested if-else statement can be replaced by switch statement as shown below:

switch num

    case(0, 1, 2)

         f2(num)

    case(-2, -1)

         f3(num)

    case(3, 4)

         f4(num)

    otherwise

         f1(num)

In this case, the switch based code is easier to write and understand because the cases are single valued or a few discrete values (not ranges of values)

answer:

an example of solubility is salt or sugar dissolving in water.

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