Modify this shell function so that it supports pipes between programs. You can assume there will always be spaces around the special character $|.$You must support an indefinite number of pipes in series. Code segement here: int pipe$\_$count $=0$;

int i $=0$;

int background $=0$; $//$ Flag to indicate if the command is to be executed in the background

$//$ Check if the command is to be executed in the background

while $($args$[$i$]!=$ NULL$)\{$

if $($strcmp$($args$[$i$],"$&$")==0)\{$

background $=1$;

args$[$i$]=$ NULL; $//$ Remove the $\text{'}$&$\text{'}$ token

break;

$\}$

i$++$;

$\}$

$//$ Count the number of pipes

i $=0$;

while $($args$[$i$]!=$ NULL$)\{$

if $($strcmp$($args$[$i$],"|")==0)\{$

pipe$\_$count$++$;

$\}$

i$++$;

$\}$

$//$ Reset argument index

i $=0$;

$//$ Array to store PIDs of child processes

pid$\_$t child$\_$pids$[$MAX$\_$ARGS$]$;

$//$ Loop through the commands separated by pipes

while $($args$[$i$]!=$ NULL && pipe$\_$count $>=0)\{$

char $*$command $=$ args$[$i$]$;

char $*$full$\_$path $=$ resolve$\_$path$($command$)$;

if $($full$\_$path $==$ NULL$)\{$

fprintf$($stderr$,$ "Command not found: $\%$s

$",$ command$)$;

return $1$;

$\}$

printf$("\%$d$",$pipe$\_$count$)$;

if $($pipe$\_$count $>0)\{$

$//$ Create a pipe for every command except the last one

puts$("$yes$")$;

int pipes$[2]$;

if $($pipe$($pipes$)==-1)\{$

perror$("$Pipe creation failed"$)$;

return $1$;

$\}$

args$[1]=$ NULL;

for $($char $**$str$=$ args;$*$str$!=$NULL ; str$++)\{$

printf$("[\%$s$]",*$str$)$;

$\}$

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

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

for $($char $**$str$=$ args;$*$str$!=$NULL ; str$++)\{$

printf$("[\%$s$]",*$str$)$;

$\}$

$//$ Child process

if $($pipe$\_$count $>0$ && i $!=0)\{$

$//$ Redirect stdin from the read end of the previous pipe

dup$2($pipes$[0],$ STDIN$\_$FILENO$)$;

close$($pipes$[0])$;

$\}$

if $($pipe$\_$count $>0$ && i $!=$ pipe$\_$count$)\{$

$//$ Redirect stdout to the write end of the current pipe

dup$2($pipes$[1],$ STDOUT$\_$FILENO$)$;

close$($pipes$[1])$;

$\}$

$//$ Close all pipe file descriptors

for $($int j $=0$; j $<$ pipe$\_$count $*2$; j$++)\{$

close$($pipes$[$j$])$;

$\}$