please help on parts that says "put your code here"

initializeReflist$()$;

readRefereeInfo$()$;

int choice;

do $\{$

system$("$CLS$")$;

choice $=$ menu$()$;

switch $($choice$)\{$

case $1$:

listAllReferees$()$;

break;

case $2$:

listRefereesOfSpecificGrade$()$;

break;

case $3$:

Quit$()$;

break;

default:

cout $$ "That was an invalid choice, please try again!

$"$;

$\}$

system$("$PAUSE$")$;

$\}$ while $($choice $>0$ && choice $<mtext></mtext><mn>3</mn><mi>)</mi>$;

system$("$PAUSE$")$;

return $0$;

$\}$

int menu$()$

$\{$

int option;

cout REFEREE SYSTEM

$"$;

cout List All Referees.

$"$;

cout List All Referees of A Specific Grade.

$"$;

cout Quit.

$"$;

cout $$ "Please select your option: $"$;

cin $>>$ option;

while $($option $<mtext></mtext><mn>1</mn><mtext></mtext><mi>|</mi><mi>|</mi>$ option $>3)$

$\{$

cout $$ "Invalid option!!! Please select valid option: $"$;

$\}$

cin $>>$ option;

return option;

$\}$

void initializeReflist$()$

$\{$

SReferee defaultRef $=\{"0000",$ UNKNOWN $\}$;

for $($int i $=0$; i $$ REFEREE$\_$LIST$\_$SIZE; i$++)$

referees$[$i$]=$ defaultRe$\backslash$overline$\{$f$\}$;

$\}$

void listAllReferees$()$

$\{$

$```$

$```$

i$++$;

$\}$

if $(!$found$)$

cout NO Referees found!!!" $$ endl;

$\}$

void Quit$()$

$\{$

$//$ Write Referee information back from the referee array to the file Referees.txt

writeRefereeInfo$()$;

cout $$ "Have a nice day

$"$;

$\}$

void readRefereeInfo$()$

$\{$

$//$ Read Referee information from the file Referees.txt to the referee array

ifstream inFile;

inFile.open$("$Referees$.$txt$")$;

if $($inFile$.$fail$())$

$\{$

cout $$ "Error open the input file... Exiting

$"$;

$\}$

exit$(1)$;

string tempStr;

int i $=0$;

while $($inFile $>>$ referees$[$i$].$id$)$

$\{$

$//$ Add your code here to

$//1.$ read from the file Referees.txt the grade as the to the tempStr

$//2.$ convert the grade in string to grade in RefereeGrade

$//3.$ then assign the converted grade to the referees$[$i$].$grade

referees$[$i$].$grade $=$ stringToGrade$($tempStr$)$;

i$++$;

$\}$

inFile.close$()$;

$\}$

void writeRefereeInfo$()$

$\{$

ofstream outFile;

outFile.open$("$Referees$.$txt$")$;

if $($outFile$.$fail$())$

$\{$

cout $$ "Error open the output file... Exiting

$"$;

$\}$

exit$(1)$;

int i $=0$;

while $($i $$ REFEREE$\_$LIST$\_$SIZE$)$

$\{$

if $($referees$[$i$].$id $!="0000")$

$\{$

$``````$

outFile $$ referees$[$i$].$id t$"$;

$//$ Add your code here to

$//1.$ convert the grade in RefereeGrade to the corresponding string

$//2.$ write the converted string to the file Referees.txt

outFile $$ endl;

$\}$

i$++$;

$\}$

outFile.close$()$;

$\}$

string gradeToString$($RefereeGrade g$)$

$\{$

switch $($g$)\{$

case CLUB:

return "CLUB";

case STATE:

return "STATE";

case NATIONAL:

return "NATIONAL";

case FIFA:

return "FIFA";

default:

return "UNKNOWN";

$\}$

$\}$

RefereeGrade stringToGrade$($string s$)$

$\{$

if $($s $==$ "CLUB"$)$

return CLUB;

else if $($s $==$ "STATE"$)$

return STATE;

else if $($s $==$ "NATIONAL"$)$

return NATIONAL;

else if $($s $==$ "FIFA"$)$

return FIFA;

else

return UNKNOWN;

$\}$

$```$