Write a recursive function called print$\_$num$\_$pattern$()$ to output the following number pattern.

Given a positive integer as input $($Ex: $12),$ subtract another positive integer $($Ex:$3)$ continually until a negative value is reached, and then continually add the second integer until the first integer is again reached. For this lab, do not end output with a newline.

Do not modify the given main program.

Ex$.$ If the input is:

$12$

$3$

the output is:

$12,9,6,3,0,-3,0,3,6,9,12$