give me the code for the TODO section:

$//$ TEMPLATE

$//$ fork$\_$me$.$c: a deceptive pattern of forking

#include

#include

$//$ #include $//$ uncomment if using wait$()/$ waitpid$()$ system call

int global$\_$total $=0$;

int main$($void$)\{$

printf$("$START$|$ pid: $\%$d parent$\_$pid: $\%$d

$",$

getpid$(),$getppid$())$;

fflush$($stdout$)$; $//$ flush stdout to preven I$/$O duplication

int depth $=0$;

for$($int i$=0$; i$<4$; i$++)\{$

global$\_$total$++$;

pid$\_$t child $=$ fork$()$;

if$($child $==0)\{$

depth$++$;

break;

$\}$

$//$ TODO: insert code that makes parent pause until child is

$//$ finished, extracts its exit code, and adds that exit code onto

$//$ the global$\_$total in this parent

for$($int i$=0$; i