$2.$ Recursion $($code$)$ Be able to identify the following for a recursive function, such as the one shown below:

a$.$ How many recursive calls are made to the function counter$()$ in the example below?

b$.$ What is the output?

c$.$ Look at each statement in the function definition and note what each statement$$s significance is in recursion $($you can disregard the $$cout$$ statements, but everything else is needed here.$)$

d$.($Hint: your answers from #$1$ should connect to your answers in part c of this problem$)$

#include

using namespace std;

void counter$($int num$)\{$

if $($num $==0)$ cout $<<$ num $<<""$;

else $\{$

cout $<<$ num $<<""$; counter$($num $-5)$;

$\}$

$\}$

int main$()\{$

counter$(45)$;

return $0$;

$\}$