Fill in the underlines below to write a recursive algorithm to calculate the sum of even positive integers.

Specify the base case and the recursive case.

Answer:

$\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_$ if num $=0$

evenSum$($num$)=\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_$ if num is odd

$\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_$ otherwise

Base case: when $\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_.$

Recursive case: when $\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_.$