$[6\mathrm{.}1.$b$.$c$34.$o$12]$

What is the correct function heading for the function call in the cout statement below?

cout $$ findodd $(3)$;

void findOdd $($int num$)$

bool findodd $($int num$)$;

bool findodd$($int num$)$

void findodd$($int num$)$;