How to solve

Directions: For questions $1-4,$ represented as functions with appropriate names, determine the run$-$time for the function in terms of the variable n$.$ The answers should simply be Big$-$Oh answers, but you need to provide ample justification for your answers. You may assume that $n$ is a positive integer:void function$3($int n$)\{$ while $($n $>0)\{$ printf$("\%$d

$",$ n$)$; n $=$ n $/2$; $\}\}$ please show the answer and work. find big o for all questions please $!$