need help modify cmds$.$c code do not change that i provided thank you

A$.$ edit cmds$.$c to implement the required new commands $($md$,$ ms and h$)$

Use sscanf to convert the argument passed md or ms from a character string of hex digits

Cmds$.$c files

#include

#include "slex.h$"$

$/*===================================================================*$

$*$

$*$ Command table for tutor program $--$ an array of structures of type

$*$ cmd $--$ for each command provide the token, the function to call when

$*$ that token is found, and the help message.

$*$

$*$ slex.h contains the typdef for struct cmd$,$ and declares the

$*$ cmds array as extern to all the other parts of the program.

$*$ Code in slex.c parses user input command line and calls the

$*$ requested semantic action, passing a pointer to the cmd struct

$*$ and any arguments the user may have entered.

$*$

$*===================================================================*/$

PROTOTYPE int stop$($Cmd $*$cp$,$ char $*$arguments$)$;

PROTOTYPE int mem$\_$display$($Cmd $*$cp$,$ char $*$arguments$)$;

$/*$ command table $*/$

Cmd cmds$[]=\{\{"$md$",$ mem$\_$display, "Memory display: MD $"\},$

$\{"$s$",$ stop, "Stop" $\},$

$\{$NULL$,$ NULL, NULL$\}\}$; $/*$ null cmd to flag end of table $*/$

char xyz $=6$; $/*$ test global variable $*/$

char $*$pxyz $=$ &xyz; $/*$ test pointer to xyz $*/$

$/*===================================================================*$

$*$ command routines

$*$

$*$ Each command routine is called with $2$ args, the remaining

$*$ part of the line to parse and a pointer to the struct cmd for this

$*$ command. Each returns $0$ for continue or $1$ for all$-$done.

$*$

$*===================================================================*/$

int stop$($Cmd $*$cp$,$ char $*$arguments$)$

$\{$

return $1$; $/*$ all done flag $*/$

$\}$

$/*===================================================================*$

$*$

$*$ mem$\_$display: display contents of $16$ bytes in hex

$*$

$*/$

int mem$\_$display$($Cmd $*$cp$,$ char $*$arguments$)$

$\{$

printf$("$Reached mem$\_$display, passed argument string: $|\%$s$|$

$",$ arguments$)$;

printf$("$ help message: $\%$s

$",$ cp$->$help$)$;

return $0$; $/*$ not done $*/$

$\}$

Slex.c file this file did not need modify do not touch it$.$

#include

$//$#include

#include "slex.h$"/*$ for definition of type cmd $*/$

$//$#include slex.h

int slex$($char $*$linebuf$,/*$ string from user $*/$

Cmd cmdtable$[],/*$ cmd table to use $*/$

int $*$cnum$\_$ptr$,/*$ returned command number $*/$

int $*$pos$\_$ptr$)/*$ returned new place in linebuf $*/$

$\{$

int i $=0$;

char token$[$MAXTOKENLEN$]$;

int newpos;

if $($gettoken$($linebuf$,$token,&newpos$)<0)/*$ get token from linebuf $*/$

return $-1$; $/*$ couldn't find token $*/$

while $(($cmdtable$[$i$].$cmdtoken $!=$ NULL$))\{$

if $($strcmp$($cmdtable$[$i$].$cmdtoken,token$)==0)\{$

$*$cnum$\_$ptr $=$ i; $/*$ success$--$return command # $*/$

$*$pos$\_$ptr $=$ newpos; $/*$ and where we got to in linebuf $*/$

return $0$;

$\}$

else

i$++$; $/*$ keep scanning table $*/$

$\}$

return $-1$; $/*$ no match $*/$

$\}$

$/******************************************************************$

$*$ get one space$-$delimited token from string in linebuf, also return

$*$ new position in string

$*/$

int gettoken$($char $*$linebuf$,$ char $*$token$,$ int $*$pos$\_$ptr$)$

$\{$

int i $=0$;

int j $=0$;

while $($linebuf$[$i$]==\text{'}\text{'})$

i$++$; $/*$ skip blanks $*/$

while $($linebuf$[$i$]!=\text{'}\text{'}$&&linebuf$[$i$]!=\text{'}\backslash 0\text{'})$

token$[$j$++]=$ linebuf$[$i$++]$; $/*$ copy chars to token $*/$

if $($j$==0)$

return $-1$; $/*$ nothing there $*/$

else

$\{$

token$[$j$]=\text{'}\backslash 0\text{'}$; $/*$ null$-$terminate token $*/$

$*$pos$\_$ptr $=$ i; $/*$ return place in linebuf we got to $*/$

return $0$; $/*$ success $*/$

$\}$

$\}$