Proper includes and declarations have been made but not shown below $($pseudo$-$code$).$ The size of an

integer is $4$ bytes and this of a character is $1$ byte. Based on the snippet below, investigate the following:

Q$1$: Remove lines A and C altogether but keep B and D$.$

Q$2$: Remove lines B and D altogether but keep A and C$.$

In Q$1$ and Q$2$ what are the final values of r$1,$ r$2,$ r$3,$ r$5,$ r$6,$ r$7?$ Are there orphans or zombies at the end?

int pipefd$[2]$;

pid$\_$t res; $//$size of res is $8$ bytes

char ch$[50]$;

int r$1,$ r$2,$ r$3,$ r$4,$ r$5,$ r$6,$ r$7$;

pipe$($pipefd$)$;

res $=$ fork$()$;

if $($res $>0)\{$

sleep$(5)$; $//$ line A

r$1=$ write$($pipefd$[1],$&res,$2*$sizeof$($r$4))$;

sleep$(5)$; $//$ line B

r$2=$ write$($pipefd$[1],$&r$1,2*$sizeof$($char$))$;

printf$($Finished$!)$;

r$7=$ waitpid$(-1,$&status,WUNTRACED$|$WNOHANG$)$;

sleep$(20)$;

close$($pipefd$[$