help me with code and compile, below is code guidelines, dont change guidlines:

#include

#include

#include

#include

#define MAXLINE $100$

$//$ function prototypes

void encode$($unsigned char first$\_$letter, unsigned char second$\_$letter,

unsigned char third$\_$letter$)$;

void decode$($unsigned int codeword$)$;

int main$()$

$\{$

char line$[$MAXLINE$]$;

char command$[$MAXLINE$]$;

char inputcs$[$MAXLINE$]$;

int items;

int i$,$ invalid;

unsigned int codeword;

printf$("$

PP$2$: encoding and decoding $(29,24)$ Hamming code.

$")$;

printf$("$Commands:

$\backslash$tenc $3-$letters

$\backslash$tdec $8-$hex$-$digits

$\backslash$tquit

$")$;

$//$ each call to fgets, collects one line of input and stores in line

while $($fgets$($line$,$ MAXLINE, stdin$)!=$ NULL$)\{$

items $=$ sscanf$($line$,"\%$s$\%$s$",$ command, inputcs$)$;

if $($items $==1$ && strcmp$($command$,$ "quit"$)==0)\{$

break;

$\}$ else if $($items $==2$ && strcmp$($command$,$ "enc"$)==0)\{$

$//$ encoding

if $($strlen$($inputcs$)!=3||!$isprint$($inputcs$[0])||$

$!$isprint$($inputcs$[1])||!$isprint$($inputcs$[2]))\{$

printf$("$Invalid input to encoder: $\%$s

$",$ inputcs$)$;

$\}$ else $\{$

encode$($inputcs$[0],$ inputcs$[1],$ inputcs$[2])$;

$\}$

$\}$ else if $($items $==2$ && strcmp$($command$,$ "dec"$)==0)\{$

$//$ decoding: convert hex digits to integer

items $=$ sscanf$($inputcs$,"\%$x$",$ &codeword$)$;

if $($items $!=1||$ strlen$($inputcs$)>8)\{$

printf$("$Invalid input to decoder: $\%$s

$",$ inputcs$)$;

$\}$ else $\{$

for $($i$=0,$ invalid$=0$; i $$ strlen$($inputcs$)$ && $!$invalid; i$++)\{$

if $(!$isxdigit$($inputcs$[$i$]))$

invalid $=1$;

$\}$

$//$ if $8$ digits, leading digit must be $1$ or $0$

if $($invalid$)\{$

printf$("$Invalid decoder digits: $\%$s

$",$ inputcs$)$;

$\}$ else if $($strlen$($inputcs$)==8$ && inputcs$[0]!=\text{'}1\text{'}$

&& inputcs$[0]!=\text{'}0\text{'})\{$

printf$("$Invalid decoder leading digit: $\%$s

$",$ inputcs$)$;

$\}$ else $\{$

decode$($codeword$)$;

$\}$

$\}$

$\}$ else $\{$

printf$("$# :$\%$s$",$ line$)$;

$\}$

$\}$

printf$("$Goodbye

$")$;

return $0$;

$\}$

$*$ encode: calculates parity bits and prints codeword

$*$

$*$ input: three ASCII characters

$*$ assumptions: input is valid

$*$

$*$ Example: if input letters are is $\text{'}$C$\text{'},\text{'}$U$\text{'},$ and $\text{'}$t$\text{'}$

$*$ the final print must be:

$*---01110100010100101010010011100$

$*$ Codeword: $0$x$0$E$8$A$549$C

$*/$

void encode$($unsigned char first$\_$letter, unsigned char second$\_$letter,

unsigned char third$\_$letter$)$

$\{$

$//$ you must construct the codeword

unsigned int codeword $=0$;

int i $=-1$; $//$ dummy variable

printf$("\%9$s$\%9$c$\%9$c$\%9$c

$",$ "Encoding:", third$\_$letter, second$\_$letter,

first$\_$letter$)$;

printf$("0$x $00\%9$x$\%9$x$\%9$x

$",$ third$\_$letter, second$\_$letter, first$\_$letter$)$;

$//$

$//$ ADD your code here

$//$

$//$ print the information word in binary form with spaces

$//$ print the parity bits, one bit per line. Do not change

$//$ the format, but you must change the dummy variable i

$//$ to match your design

printf$("$P$1$ : $\%$d

$",$ i$)$;

printf$("$P$2$ : $\%$d

$",$ i$)$;

printf$("$P$4$ : $\%$d

$",$ i$)$;

printf$("$P$8$ : $\%$d

$",$ i$)$;

printf$("$P$16$: $\%$d

$",$ i$)$;

$//$ print the codeword bits in binary form with spaces

$//$ print the codeword in hex format

printf$("$ Codeword: $0$x$\%\mathrm{.}8$X

$",$ codeword$)$;

printf$("$

$")$;

$\}$

$/*$ decode: checks parity bits and prints information characters

$*$

$*$ input: A $29-$bit codeword

$*$ assumptions: the codeword has either no or only one error.

$*$

$*$ the information characters may not be printable

$*$

$*$ FYI: when a codeword has more than one error the decoding algorithm

$*$ may generate incorrect information bits. In a practical system

$*$ inforamtion is grouped into multiple codewords and a final CRC

$*$ code verifies if all codewords are correct. We will not

$*$ implement all of the details of the system in this project.

$**$ Example: if the codeword is $0$x$0$E$8$A$549$C

$*$ the final print must be:

$*$ No error

$*--------011101000101010101000011$

$*$ Information Word: $0$x$745543($CUt$)$

$*$

$*$ Example with one error in codeword bit $21$: $0$x$0$E$9$A$549$C

$*$ Notice the $8$ in the previous example has been changed to a $9$

$*$ the final print must be:

$*$ Corrected bit: $21$

$*--------011101000101010101000011$

$*$ Information Word: $0$x$745543($CUt$)$

$*/$

void decode$($unsigned int codeword$)$

$\{$

$//$ you must determine these values:

unsigned int info$\_$word $=0$;

unsigned char first$\_$letter $=0$x$42$;

unsigned char second$\_$letter $=0$x$61$;

unsigned char third$\_$letter $=0$x$64$;

int bit$\_$error$\_$location $=21$;

$//$ dummy variable

int i $=-1$;

printf$("$Decoding: $0$x$\%\mathrm{.}8$X

$",$ codeword$)$;

$//$

$//$ ADD your code here to fix a bit error if one exists

$//$ and determine the three characters

printf$("$E$1$ : $\%$d

$",$ i$)$;

printf$("$E$2$ : $\%$d

$",$ i$)$;

printf$("$E$4$ : $\%$d

$",$ i$)$;

printf$("$E$8$ : $\%$d

$",$ i$)$;

printf$("$E$16$: $\%$d

$",$ i$)$;

if $($bit$\_$error$\_$location $==0)$

printf$("$ No error

$")$;

else if $($bit$\_$error$\_$location $>0$ && bit$\_$error$\_$location

printf$("$ Corrected bit: $\%$d

$",$ bit$\_$error$\_$location$)$;

$\}$ else

printf$("$ Decoding failure: $\%$d

$",$ bit$\_$error$\_$location$)$;

if $(($first$\_$letter & $0$x$80)==0$ && isprint$($first$\_$letter$))$

printf$("(\%$c$",$ first$\_$letter$)$;

else

printf$("")$;

if $(($second$\_$letter & $0$x$80)==0$ && isprint$($second$\_$letter$))$

printf$("\%$c$",$ second$\_$letter$)$;

else

printf$("")$;

if $(($third$\_$letter & $0$x$80)==0$ && isprint$($third$\_$letter$))$

printf$("\%$c$)$

$",$ third$\_$letter$)$;

else

printf$(")$

$")$;

printf$("")$;

$\}$